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IS_-R: 4 Channel Relay with Intrinsically Safe Inputs

• 1, 2, 3, or 4 Channels


• Shorted Input Sensing


• Open Input Sensing


• Outputs Isolated from Supply


• Contact or Probe Inputs


• Conductivity or Resistance



• Output and Input LED  



• Independent Operation


• Pluggable Terminal Blocks


• Din or Surface Mount


• 24 to 240VAC Supply


Independent Channel Relay 

Supply voltage must be applied to the IS_-R relay during operation. The IS_-R can have 1, 2, 3 or 4 channels. When IS input #1 closes its LED changes and #1 output contact closes. When IS input #1 opens#1 output contact opens. Each channel operates independent of the other channels.


LED indicators are:

Red - When the IS input is open or high

Green - When both the IS input & output contact are closed

Flashes - During transition delay A green LED indicates when supply

     voltage has been applied to the IS_-R.




Supply Voltage: 24, 120 & 240VAC ±10%

Power: 2VA Inputs: Switch Closure or Probe (Conductivity)

Input Sensitivity: 3K - 1.5MΩ

Pick-up & Drop-out Delays: 1 second

Max. Open Circuit Voltage: 5 volts AC

Max. Source Current: 0.1 milliamp AC

Output Rating @ 25°C:

     5 Amps or 100VA per contact

     10 Amps total

     250VAC maximum contact rating

     10,000,000 Mechanical Cycles



Mounting: Din Rail mount

Termination: Touch safe screw terminals, with lift mechanism,

     #12 AWG max. for supply and relay contacts,

     #16 AWG max. for intrinsically safe inputs.

Weight: 10 Oz.


Ambient Temperatures

Operating: 0°C to 50°C

Storage: -40°C to 85°C


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