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.
Contact Sords Electric HERE!
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Littelfuse SIR 20 Amp Solid State Relays
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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!
Littelfuse SIR1...Littelfuse SIR2...Littelfuse SIR1...Littelfuse SIR2...Littelfuse SIR...1
