Littelfuse PHS Phase controller

Littelfuse/SSAC Output controller from Sords Electric

The Littelfuse PHS Series is an ideal method of changing lamp intensity, varying the speed of a fan/motor, or controlling the temperature of a heater. The effective output voltage is adjusted with an accessory external potentiometer suitable for line voltage applications.

Contact Sords Electric HERE!

Littelfuse PHS Phase Controller

Operation: 

Upon application of input voltage, effective output voltage can be varied by changing the external resistance value. As the external resistance increases, the effective output voltage decreases. The inverse is also true.

Features    and     Benefits

External adjustment - 230VAC rated potentiometer  >>  Allows control of heavy loads directly, solid state design will provide long life 

Up to 20A steady state - 200A inrush  >>  Allows control of heavy loads directly, solid state design will provide long life 

Single hole surface mounting  >>  Provides quick and easy installation

Accessories

P1004-174 (100kΩ 1W) Versa-Pot for 120 volts
Panel mountable, industrial potentiometer recommended for remote time delay adjustment

Must have insulation resistance suitable for line voltage applications.

P1004-175 (200kΩ 2W) Versa-Pot for 230 volts
Panel mountable, industrial potentiometer recommended for remote time delay adjustment

Must have insulation resistance suitable for line voltage applications.

P0700-7 Versa-Knob 

Designed for 0.25 in (6.35 mm) shaft of Versa-Pot. Semi-gloss industrial black finish

Littelfuse PHS Part Numbers:

Littelfuse  PHS120A10     120VAC   10Amps

Littelfuse  PHS120A20     120VAC   20Amps

Littelfuse  PHS120A6       120VAC   6Amps

Littelfuse  PHS230A10     230VAC   10Amps

Littelfuse  PHS230A20     230VAC   20Amps

Littelfuse  PHS230A6       230VAC   6Amps

Contact Sords Electric HERE!

Sords Electric
216-765-4230
www.sordselectric.com

Littelfuse PHS...Littelfuse PHS...Littelfuse PHS...Littelfuse PHS

TRC Digital Power Monitor

Sords Electric Stocks the TRC Digital Power Monitor
Electra Check!  TRC Part Number is AECM20020

Contact Sords Electric HERE!

This compact, easy to use instrument is made with advanced microelectronics and provides accurate testing and monitoring of electrical outlets and systems. Constantly monitors voltage and grequency indications potential inproper polarity and ground wiring.  Its small size and rugged construction allows for convenient installation in an electrical outlet or use as a portable service tool.

Intallation of the AECM20020 Digital Monitor is for use in a standard 120V/a5A outlet.  It is suitable for continuous or occasional use.  The viewing angle of the LCD display is optimized for viewing at a 12:00 viewing position.  Looking directly at or down at the unit while mounted in a low outlet gives the best viewing contrast.
The voltage is measured is RMS which is much more precise that AC average.  RMS metering is the only method tat can accurately measure all AC power sources.  THE RMS voltage and frequency readings are ideal for monitoring modified sine waves, such as solid-state generators, inverters and Uninterruptible Power Supply (UPS) products.
Operation
The digital monitor display will alternate between line voltage in RMS and line Frequency in Hertz. The LCD display shows an F in front of the reading to denote frequency.

Voltage range is 85-150 VAC RMS.
Over voltage arm is at 135 VAC RMS
Frequency range is 40 Hz to 80 Hz
Under frequency is 55 Hz
Power rating is 2 watts
Operating current is .02 amps

Call for pricing on the TRC Voltage Monitor AECM20020
Contact page is HERE!


Sords Electric
216-765-4230
www.sordselectric.com

ATC Diversified Electronics Timers

Sords Electric sells Diversified Products, Timers, Voltage monitors, current monitors, time delay relays,  alternating relays, pump controls, and Power Alerts.

For more than 50 years, the ATC Diversified Electronics division of Marsh Bellofram (ATC Diversified) has offered some of the industry’s highest reliability AC current monitors, motor and pump protection, isolated switches and alternating relay products.

As a leader in solid state control products, the division was the industry pioneer in the first Phase Monitor Relay designed to protect 3-phase equipment from adverse conditions such as Phase Loss (single phasing), Under Voltage (brown-outs), and Phase Reversal (improper sequence). Continued investment in new product R&D and continuous quality improvements allows the ATC Diversified team to offer market-leading technologies, keeping pace with the needs of an evolving industrial marketplace.

Diversified Timers are Available in DIP switch selectable socket mount (plug-in) or DIN-rail mounted versions, Marsh Bellofram time delay relays (also known as TDRs or timers) are used to equip industrial machinery, conveyor belts, exhaust fans, heating systems, lubricators, and pump and motor controls with timed sequence delay, soft-start delay or auto-start functions for added machinery and equipment protection.

The TBD Series from the ATC Diversified Electronics division of Marsh Bellofram is a family of rugged, high-reliability off-delay DIP switch time delay relays (TDRs), designed to equip industrial machinery, conveyor belts, exhaust fans, heating systems, lubricators, and pump and motor controls with timed sequence delay, soft-start delay or auto-start functions for added machinery and equipment protection. Supply voltage is continuously applied to the input. An external isolated switch between pins 5 and 6 controls the timer. When closed, the relay energizes. Opening the switch initiates the delay period. Upon completion of the delay period, the relay de-energizes. If the control switch recloses during the delay period, the relay remains energized and the timer resets to zero. NOTE: The TBD series is available in 8-pin SPDT and 11-pin DPDT configurations.

• Off-delay time set with DIP switches
• Available models from 0.1 seconds to 1,023 minutes
• LED glows when relay is energized
• High repeatability and accuracy

The Diversified TBF Flip Flop timer or Recycle timer turns a load on and off indefinately.  When supply voltage is applied to the input, the OFF time (T1) begins. Upon completion of the OFF time, the relay energizes and the ON time (T2) begins. Upon completion of the ON time, the relay de-energizes and one cycle is complete. This OFF/ON cycling continues until supply voltage is removed from the input. The OFF/ON time periods are independently selectable within the same range. The OFF time is first on the TBF model.

DIP Switch Operation: Digital selection of the time delay is accomplished by the use of ten (10) binary switches, each marked with a time increment. The time periods, of which there are five (5) ranges, represented by each switch in the ON position is added together to obtain the desired time delay. No more trial-by-error adjustments.

TBG Series Repeat Cycle-ON Time First DIP Switch TDR.  The TBG is the same as the TBF but the ON time is first.

TBF24ADA    .1 minute (6 seconds) to 102.3 minutes  24 ac/dc    off timer first
TBF120ADA  .1 minute (6 seconds) to 102.3 minutes  120 ac/dc  off time first
TBF24AEA    1 minute to 1023 minutes (17 hours)  24 ac/dc     off time first
TBF120AEA  1 minute to 1023 minutes (17 hours)  120 ac/dc    off time first
TBG24ADA    .1 minute (6 seconds) to 102.3 minutes  24 ac/dc     on time first
TBG120ADA   .1 minute (6 seconds) to 102.3 minutes  120 ac/dc  on time first
TBG24AEA     1 minute to 1023 minutes (17 hours)  24 ac/dc    on time first
TBG120AEA   1 minute to 1023 minutes (17 hours)  24 ac/dc    on time first

The Diversified TBU Series offers the accuracy of DIP SWITCH delay ranges “A” through “E” as well as the user programmable model, DIP SWITCH delay range “P,” with 4 different ranges obtainable by either leaving 2 designated terminals unconnected or by connecting them to the appropriate terminals. The 6 most common modes of operation are easily selected by the use of one or more jumpers applied externally between designated base pins as outlined below. These features, coupled with 6 most popular supply voltages, make this timer one of the most versatile and cost effective Time Delay Relays available today. The CMOS digital circuitry provides high accuracy, repeatability and fast reset times.

TBU12DPA  12vdc
TBU24APA  24 ac/dc
TBU120APA  120 ac/dc
TBU240APA  240 ac/dc

The Diversified TDU Series is one of the most versatile single timers available today. One model replaces forty-eight industry standard devices; 4 wide delay ranges x 6 most common modes of operation x 2 supply voltages—since they will operate on both AC and DC. The CMOS digital circuitry provides high accuracy, repeatability and fast reset times. The heavy duty relays are rated for continuous operation at 10 amps. All programming is easily accomplished externally by using one or more jumpers between designated base pins—no trap doors to open, no switches to set, no disassembly required.
 
TDU12DKA    12 vdc
TDU24AKA    24 ac/dc
TDU120AKA  120 ac/dc
TDU240AKA  240 ac/dc

The TDC/TUC series from the ATC Diversified Electronics division of Marsh Bellofram is a family of rugged, high-reliability ON-delay relay outputs, designed to equip industrial machinery, conveyor belts, exhaust fans, heating systems, lubricators, and pump and motor controls with timed sequence delay, soft-start delay or auto-start functions for added machinery and equipment protection. The time delay begins when power is applied to the input. Upon completion of the delay period, the relay energizes. Reset during or after the delay period is accomplished by removal of the input voltage. The TDC/TUC will not false transfer if voltage is removed prior to completion of the delay period. A fast recycle time permits accurate, high speed, continuous operation.


www.sordselectric.com
216-765-4230

Gavazzi Photo CGPS ~ Sords Electric

Photo Electrics at Sords Electric

Carlo Gavazzi offers a large range of photoelectric sensors which are used extensively on packaging machinery, automatic door systems, factory automation, and in car washes. Our sensors are available in diffuse reflective, background suppression, reto-reflective, polarized, through beam, clear object detection, and colour recognition.

Carlo Gavazzi is a leader in photoelectric sensors for automatic doors and have one of the broadest range of UL325 sensors on the market.

We also offer a range of fibre-optic type sensors for applications where a conventional sensor cannot be used (space restrictions, temperature, atmosphere).

Also included in our range of photoelectric sensors are our VP series optical types. These are ideal for use in level applications. They are available in various housing materials which allow their use in various industrial cleaning solutions.

CGPS-UT PHOTO ELECTRIC - Thru Beam ( Through Beam )

Ultra Short body Length

6m & 20m sensing ranges

Multiple connection options

dual Output - NO and NC

10-30 vdc supply voltage

both cable and plug connection options

IP66

UL and cUL approved and CE marked

Part Numbers:

CGPS-UT-6MN 6 meter sensing/NPN

CGPS-UT-6MP PNP 6 meter sensing

CGPS-UT-20MN NPN/20 meter sensing

CGPS-UT-20MP 20 meter sensing/PNP

CGPS-UT-6MN-M8 6 meter sensing/NPN

CGPS-UT-6MP-M8 PNP/6 meter sensing

CGPS-UT-20MN-M8 NPN/20 meter sensing

CGPS-UT-20MP-M8 20 meter sensing/PNP

CGPS-UT-6MN-PG 6 meter sensing/NPN

CGPS-UT-6MP-PG 6 meter sensing/PNP

CGPS-UT-20MN-PG NPN/20 meter sensing

CGPS-UT-20MP-PG PNP/20 meter sensing

Buy Photos here!

Sords Electric and Control

Carlo Gavazzi Switches

800-929-2845

Electric Tankless Water Heaters

Sords Electric Sell Electric Tankless Heaters.

A tankless heater heats water as it passes through the heater.  It does not store hot water like a traditional tank water heater.  The tankless heater turns on when it senses flow, heats the water and hot water flow out the outlet.  When the flow of the water stops, a flow switch detects this and the tankless heater turns off.  Tankless heaters only use electricity when they are providing hot water.  A tank heater is continually using electricity by keeping the water hot waiting for a faucet to be turned on.

There are tankless heaters designed for the whole house, just sinks or for use in industrial plants.

Industrial use tankless heaters are sometimes called inline heaters or circulation heaters.  They can be made quite large to heat large volumes of water, gases or oils.  In home or commercial use tankless heaters are smaller and require less power to operate.

Tankless heaters do have a limitation.  The limitation is the amount of flow that the heater can heat.  For example, our 17 kilowatt (kw) heater (AE115) designed to operate in a home in the southern USA, can heat a flow rate of 2.5 gpm of water, 45 degrees F.  Meaning that the water temperature will be raised 45 degrees from the inlet temperature to the outlet temperature.  At a higher flow rate the degree change will be less, and at lower flow rates the change will be greater.  The 27 kw heater (AE125) will raise the the water 45 degrees at a 4.0 gpm flow rate and 65 at the 2.5 gpm.  2.5 gpm is a standard shower flow rate.  

Both of the AE tankless heaters heaters require larger breakers in the electrical panel than a tank heater.  The AE115 requires 2 x 40 amp two pole breakers and the AE 125 requires 3 x 40 amp breakers.  Both heaters operate on 220-240 volts AC.  Also the wire gauge needs to be 8 to carry the larger amperage load.

The tankless heater will save on electrical usage since it is only heating water when it is required.  A tank heater is on for many hours a day and also on when no one is home, thus wasting electricity.  A tankless heater can use up to 1/2 the amount of power to heat your water.  Another advantage is the tankless heater takes up very little space and can be located just about anywhere in the home.

Sords Electric has electric tankless heaters for sinks, AE7.2, AE9.5 and AE12 Power Stream heaters.  These heaters draw 30, 40 and 50 amps respectively.  We also carry the AE115 and AE125 for whole house use.  The amperages are 80 and 120.  Only one shower can be run at a time but back to back showers can be run all day long.

Sords Electric

2020

SCHNEIDER ELECTRIC ROBERTSHAW VIBRATION PRODUCTS

Robertshaw vibration switches and monitors minimize production shut down time and repair costs by measuring the total accelerated force (shock) present on a machine. Individual acceleration measurements are summed to yield the total destructive force acting on a machine. This information enables you to proactively and stategically maintain equipment. Our vibration models range from the standard traditional to new technologically enhanced models. All provide unsurpassed dependability

Robertshaw Vibration Switches and Monitors protect machinery against unnecessary shut down and repair costs, so businesses can maximize their productivity. Our wide variety of models can meet any protection need.

Typical Applications include:

Robertshaw Vibration Instruments can be used on rotating or reciprocating machines. To select the proper instrument for your machine, follow the link to Selection Guide Matrix and/or follow the steps below.

1. Select the unit that meets the environmental conditions that your machine is located in [hazardous area (explosion-proof or I.S.) or non-hazardous; temperature range].
2. Select the power supply and/or remote reset voltage required.
3. Select the unit that provides you with the required measurement type, range and frequency for your machine. The type would be acceleration (G's) or velocity (IPS). The range would be the G range or IPS range. The frequency would be in Hertz (RPM of machine ÷ 60).
4. If you require time delays (Start, Monitor or Start & Monitor delays – see note below), select the instrument that offers that feature. Models 375A/376A series offer fixed time delays; Model 566 offers adjustable Monitor Delay; Model 563A MUST BE used with Vibraswitch Model 366 or 365, and provides adjustable time delay for the units that are connected to the 563A Monitor. If time delay is not required proceed to step 5 below.
5. Select the function that you desire:
   1. Alarm or shut down only by:
      1. Electrical SPDT or DPDT Switch Operation (Models 365/366, Models 375A/376A with Start Delay Only).
      2. Solid State Triac Switch Operation (Models 375A/376A except for Start Delay ONLY Model which has SPDT Switch Contacts).
      3. Pneumatic Operation (Model 368).
   2. 4-20 mADC output only (Models 570B/571A).
   3. 4-20 mADC output with alarm and/or shut down contacts, triac outputs (Model 566).
6. Check to see if the Model selected above has a mounting configuration suitable for your application. All units are surface mount except for the following:
   1. Models 570B/571A are stud mount.
   2. Model 563A Monitor is used with the surface mount 365/366 Vibraswitches to provide adjustable start and monitor time delays.
7. After you have made your selection, review the complete Product Specification Sheet to verify your selection is correct.
   
   
   NOTE:
   Start, Monitor, or Start & Monitor Delays are used to prevent unwanted shut down or alarm during start-up or normal operation of your machine.
   1. Start Delay: Prevents unwanted shut down when excessive vibration exists (which exceeds the set-point of the vibration switch or monitor) during the start-up of the machine.
   2. Monitor Delay: Prevents unwanted shut down when short excessive vibration spikes occur (which exceed the set-point of the vibration switch or monitor) during normal operation of the machine. Spikes are typically caused by detonation, cavitation, other machinery in the immediate area, etc.

The 365A and 366 Vibraswitch malfunction detectors provide maximum protection for large motors, pumps, compressors and other rotating or reciprocating equipment by responding to mechanical malfunctions the instant they occur. The 365A is UL and c-UL certified Explosion-proof, and Type 4/4X & IP66 Weatherproof, E365A is ATEX certified,. The 366 is NEMA 4 and CSA certified.

The 375A and 376A Vibraswitches are identical to the 365/366 models, except that they incorporate built-in electronic starting, monitoring or combination starting and monitoring time delay circuits. The 375A is FM approved. The 376A has a NEMA 4 enclosure. Both require 120 VAC power.

The EURO366G Vibraswitch malfunction detector provides maximum protection from rotating and reciprocating of large motors, pumps or compressors. It is intended for indoor or outdoor use in hazardous or non-hazardous areas with ATEX and CE certifications.

The 368 pneumatically operated Vibraswitch constitutes the most effective known method of avoiding costly damage due to mechanical malfunction of rotating and reciprocating machinery where air is the operating control medium.

The 566 velocity acceleration vibration monitor employs totally solid state circuitry. Sensing mode, whether velocity or acceleration, is field selectable without loss of accuracy.

The 570B loop-powered, stud mount, vibration transmitter provides a 4-20 mADC output proportionate to vibration. This unit, known for its compact size, has a two-pin connector that mates with a splash-proof connector/cable assembly.

The 571A loop-powered, stud mount, vibration transmitter provides a 4-20 mADC output proportionate to vibration. This unit measures acceleration or velocity in three different ranges and is reverse polarity protected. It is compact in size and a 1/4-28 tapped hole and stud are provided for mounting. The two-pin connector mates with a standard MIL-C-5015 two-socket connector with a boot that provides weatherproof and splash-proof connection.

Sords Electric

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AC Variable Frequency Drives

AC drives have been around for many years in one form or another. Dating back into the 50’s and 60’s they we operated by vacuum tubes. Of course today we have IGBT’s (Insulated Gate Bi-Polar Transistors) that allow the usage of 460 Volt and higher voltages to be applied to motors. You may not be able to imagine the size of the older drives and how they occupied large amounts of space for even a small amount of Horsepower. Take for example an 100 HP drive would have required a room 12 or 14 foot long whereas today the same 100 HP would only require 3 to 4 foot of wall space, and they are getting smaller everyday. Another area of advancement has been in the performance area. The older drives were limited as to the load they could start. The stating torque was limited to on 100% of full load torque or less. Today drives can do 200% starting torque or more. This has benefited in the use of AC Drives on heavy equipment and difficult hard starting applications.

 

AC Drives have opened up many applications that use to be driven by DC Drives or large Mechanical Drives. Now the applications are limited only to a few very large systems that still require, mainly from a dollar standpoint, the use of the other types of systems. In the HVAC, Water, and Waste Water industries the use of AC Drives has not only brought about more efficient process control, but when used with centrifugal pumps and fans there is significant electrical energy savings achieved in operational costs. The drives actually pay for themselves in a short period of time through electrical energy savings. Still the main thing that the AC Drive has done is to optimize the control of a process. By optimizing a process to the right speed for the process, or being able to change the speed for various processes used by the same piece of equipment, the AC Drive saves in productivity and ease of operation which adds dollars to the bottom line of a business. Some examples of these would be in Mixing, Conveying, Cold Forging, and Presses.

 

Over the years we have seen AC Drives also become less expensive. This has lead to even more applications now using AC Drives. In some cases they have taken the place of Motor Starters. Because of the unique way an AC Drive starts an AC Motor by varying the voltage and frequency, the drive allows for a controlled acceleration of a load or soft starting. Even if the application does not need variable speed but would benefit from a controlled start the AC Drive has advantages over the basic Motor Starter. Even though the across the line Motor Starter will be less expensive, an AC Drive may save the user by providing less mechanical stress on the driven equipment. There are also Solid State Starters that will give a Soft Start, but they may have a problem starting some loads due to the nature of how they operate. I’ve often used an illustration to show the difference in across the line starting versus using an AC Drive. Have you ever had to push a car? You don’t back up 30 feet and run toward the car as fast as you can, because you will end up with something broken and in a Hospital and the car will not have moved an inch. The correct way is to lean against the car and gradually apply pressure until the car begins to move and then you can gradually pick up speed until you get the car off of the road. This is how an AC Drive starts a load, by applying voltage and frequency together in the right proportion that the load begins to accelerate. So, for a few dollars more you eliminate shock loads on coupling, gears, and other components in a drive train.

 

AC Drives may have many benefits for the user, but they still need to be applied properly depending on the application. If you think you have an application that an AC Drive would benefit your process then you should talk with an AC Drive Applications Engineer (I just happen to know one, ME). Don’t listen to a salesman say that this drive or that drive will work if they don’t know the application. And don’t be fooled that all AC Drives are all alike, they aren’t. One common mistake is sizing a drive by Horsepower only. There are some motors that have a given Horsepower, but their full load amps and starting amps are way above the amperage capacity of a drive of the same HP rating. Most distributors have inside sales people who only know part numbers and very little else. Know who you are talking with and discover if they are just giving you what you want, or are they offering you a solution for your application and a drive that will meet your needs, and one that will give you years of excellent service. My grandfather use to tell me that, “you get what you pay for”, and this is very true when it comes to AC Drives. Price alone should never be the deciding factor when purchasing an AC Drive.

 

AC Drives do wonderful things, but there are some problems that you should be aware of when you are making your selection. The installation and location of a drive are very important. There are some many potential problems that I don’t have time to cover in this format, but you should again find an expert and discuss the down side of AC Drives and some of the pitfalls that you might encounter when installing and operating a drive.

 

I’ve got 30 plus years in this business and if you need good application help please give me a call and ask for Syd, not many guys left that go by that name, or with that amount of experience.

www.sordselectric.com

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Contactors and Relays

Contactors and Relays are other names for industrial switches.  Both contactors and relays rely on coils to cause contacts to close thus changing the switch from a closed to open position or from a open to a closed position. If the contactor or relay is usually open when de-energized, it is called Normally Open, and vice versa, if it is closed in the de-energized state then it is Normally closed.  A normally open (NO) contactor or relay is more common than normally closed (NC).  The main reason is that the relay or contactor will "fail" in the open position when power is lost to the coil.

Contactors and relays are used to close a circuit to "turn on" and allow electrical flow into a system or a device.  A coil is used to open and close the contacts.  The coil voltage can be a different voltage than that is switched.  The most common coil voltages are 120/60, 24/60 and 24vdc.  The most common switched voltages are 120/60, 240/60 and 480/60.  

Contactors and relays are sized in amperes or amps. Also, they come in single pole, double pole, three pole and four pole.  The most common are single pole and three pole; three pole for three phase power systems.  The two common types of loads are resistive and inductive.  A resistive load is normally a heating load.  A resistive load does not normally have an inrush current. Howeve, some high temperature heating elements for ovens do have high inrush. Inductive loads such as motors and lighting do have inrush currents and these inrush currents need to be addressed when sizing an appropriate contactor.  To figure amps please use our OHM's law calculator.

Types of Contactors and relays are:

Mercury Contactors

Mechanical Contactors

Solid State Relays

Cube relays

SCR controls

Mercury Contactors or Mercury Displacement Relays

Mercury contactors are a great way to switch industrial loads on and off.  Mercury contactors or MDR's (Mercury Displacement Relays) can be the best option for electric heating elements.  The Mercury relays have very long life, millions of cycles, are quiet and can be cycled up to once every second.  Mercury Relays far outlast and out perform mechanical contactors and relays which can have only 100,000 cycles and be limited to switching once every 30 to 60 seconds.  Normally closed mercury relays are also used for traffic control to control blinking lights as they have the long life and higher temperature resistance  than other types of contactors, especially solid state relays.

Mercury Displacement Relays are all designed and built to meet the most exacting demands of industry. They have won their high place in the electrical field by doing the tough and tricky jobs that ordinary equipment could at best do in an uncertain manner. They have proved their ability to stand up under the most adverse conditions of temperature, dust and moisture, in all types of applications. All the care required for the manufacture of high-grade instruments is used in the manufacture of the switches. All switch parts are specially cleaned, and contamination is avoided by use of tweezers, gloves, etc., when making assemblies.

Contactors are hermetically sealed with high quality glass to metal seals.
The stainless steel tube is totally encapsulated in high grade UL approved epoxy to prevent moisture damage and voltage breakdown through the protective coating.
The coils are wound on compact nylon bobbins and molded onto the metal tube to provide minimum power loss. This allows for low coil power required to actuate the contactor. This also enables the units to handle high loads with minimum derating due to higher ambient temperatures.
Inert gases internally prevent excessive arcing between the mercury and the electrodes which enables the unit to function for millions of cycles with very low contact resistance, and minimum deterioration of the internal parts.
Available in all standard coil voltages, in single, two and three pole arrangements. Other coil voltages available upon request.
In multiple pole units each tube is actuated by its own coil. This eliminates pull-in variation between contact tubes, assuring consistent switching.

FEATURES

ADVANTAGES OVER ELECTROMECHANICAL AND SOLID STATE RELAYS Superior Performance and Reliability Long life Durable Compact Size Low, Predictable Contact Resistance Reduced RFI for Improved Interface Capability Handles a Variety of Loads Increases design flexibility Rapid On-Off Cycling Capability Mercury quickly dissipates contact heat Low Coil Power Requirements Minimal Derating Due to Higher Ambient Temperatures Quiet Action DESIGN & CONSTRUCTION Contacts are within a hermetically sealed steel body Impervious to adverse conditions No external arcing Arcing is in a gaseous atmosphere Quenches the arc Extends relay life Only one moving part (the plunger) No buttons to pit, weld or burn out One coil for each set of contacts Assures consistent switching Minimizes pull-in variation between contacts Epoxy encapsulated Moisture resistant High dielectric strength Permanently fixes contacts to coil; eliminating possible misalignment Helps dissipate heat and noise Rugged (impact resistant) BENEFITS Reduction of Operational and Maintenance costs Increases Utilization and Productivity of Equipment By reducing down-time Installation and service is a routine operation Simple to install No sophisticated equipment is required Easy to trouble-shoot TYPICAL APPLICATIONS FOR MDI's MERCURY DISPLACEMENT CONTACTORS LIGHTING Auditorium Lighting Copy Equipment Dimmer Controls Display Signs Emergency Lighting Flood Lights High Intensity Lamps Hospital Lighting Lighting Test Panels Mercury Vapor Lamps Parking Lots Photography Lighting Scoreboards Sodium Vapor Lamps Stage Lighting Street Lighting Tower Control Traffic Signal Tungsten Lamps GENERAL APPLICATIONS Air Conditioning Alarm Systems Automatic Door Closers Battery Chargers Blue Print Machines Copiers Computer Power Supplies Corrosive Locations Dusty, Oily Locations Dry Cleaning Equipment Energy Management Systems Farm Incubators & Brooders High Cycle Rate Applications Low Voltage Switching Marking & Engraving Equipment Motor Starting Soldering Systems Telephone Switching Test Panels Vapor Degreasers X-Ray Machine Controls ELECTRIC HEATERS Baseboard Heaters Blow Molding Cabinet Heaters Chemical Tank Heaters Curing Furnaces Drying Ovens Duct Heaters Film Packaging Glass Furnaces Heat Lamps Heat Sealing Machines Induction Heater Industrial Ovens Infrared Heaters Ink Drying Ink Heating Injection Molding Machines Kilns Lab Ovens Packaging Equipment Plastic Extruders Quartz Heaters Radiant Heaters Roof Top Heating Shrink Tunnels Unit Heaters Vacuum Forming FOOD INDUSTRY EQUIPMENT (HEATERS) Baking Ovens Coffee Urns Deep Fryers Dishwashers Electric Grills Electric Ranges Pizza Ovens Steam Generators SPECIALTY APPLICATIONS Capacitor Discharge Systems Hazardous Locations Phase Converters Tower Control