SIR2B20B4 - SIR Series

Series: SIR Questions? Contact Littelfuse Support
Littelfuse Single Function Relays
Designed for industrial applications requiring rugged reliable operation. Provides an optically isolated, high capacity, solidstate 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.


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.

Property (Mouseover for details) Value
Input Voltage (V) 90 to 150VAC/DC
Input Tolerance (%) ±20%
Input Type Optical isolation LED/photo transistor
Output Voltage 120VAC
Output Voltage Drop (V) ≅2.0V at rated current
Minimum Output Load Current (A) ≅50mA
Output Type Optical isolation totally Solid state
Output Form SPST NC
Output Load Rating (VA) 20A
Power Consumption ≤0.5W
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Open State Leakage Current (A) ≅6mA
Circuitry Encapsulated
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -40° to 60°C (-40°F to 140°F)
Storage Temperature (F/C) -55° to 85°C (-67°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.51 in. (50.8 x 50.8 x 38.4mm)
Weight (lbs/g) ≅3.9oz (111g)