SIR Littelefuse Solid State Relays from Sords Electric
The Littelfuse SIR Series is designed for industrial applications requiring rugged reliable operation. Provides an optically isolated, high capacity, solid-state output, with power switching capability up to 20A steady state, 200A inrush. Zero voltage switching SIR2 extends the life of an incandescent lamp up to 10 times. Random switching SIR1 is ideal for inductive loads. When fully insulated female terminals are used on the connection wires, the system meets the requirements for touch-proof connections.
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| Littelfuse SIR 20 Amp Solid State Relays |
Operation:
The solid-state output is located between terminals 1 and 3, and is normally open or normally closed without control voltage applied to terminals 4 and 5. When control voltage is applied to terminals 4 and 5, the solid-state output opens or closes respectively. Reset: Removing control voltage resets the output. The unit is also reset if output voltage is removed.
FEATURES >>> BENEFITS
Compact design measures 2 in. (50.8mm) square >> Perfect for OEM applications where space is limited
Totally solid state and encapsulated >> No moving parts to arc and wear out over time and encapsulated to protect against shock, vibration and humidity
Up to 20A, 200A inrush output rating >> Provides direct control of heavy inductive, incandescent or resistive loads
Switching output is optically isolated from the control input >> Provides the ability to interface between 2 different electrical circuits
SIR1 models provide random switching >> Designed for use with resistive and incandescent loads, extending lamp life up to 10 times
SIR2 models provide zero voltage switching >> Perfect for resistive and incandescent loads
Metalized mounting surface >> Facilitates heat transfer in high current applications
Littelfuse Model Numbers
MODEL SWITCHING CONTROL VOLTAGE RATING OUTPUT FORM OUTPUT VOLTAGE
SIR1A1A4 Random 9 to 30VAC or DC 3A Normally open 120VAC
SIR1A20A4 Random 9 to 30VAC or DC 20A Normally open 120VAC
SIR1B6B4 Random 90 to 150VAC or DC 6A Normally closed 120VAC
SIR1C20B6 Random 190 to 290VAC or DC 20A Normally closed 230VAC
SIR2A20A4 Zero Cross 9 to 30VAC or DC 20A Normally open 120VAC
SIR2B20A4 Zero Cross 90 to 150VAC or DC 20A Normally open 120VAC
SIR2B20B4 Zero Cross 90 to 150VAC or DC 20A Normally closed 120VAC
Contact Sords Electric HERE!
