
Intrinsically Safe Relays

Littelfuse intrinsically safe relays are UL 913 listed as associated apparatuses for interfacing between hazardous and nonhazardous areas. These high-quality products protect hazardous location circuits and are core components for intrinsically safe applications. The ISS-105 series is designed as a "smart" five-channel relay and pump controller, which can be configured for pump-up or pump-down applications. The ISS-102 offers two LEDs for visual indication of relay engagement. These intrinsically safe relays are offered with single-, two-, three-, four-, or five-channel options.
- Input voltages from 90 V ac to 120 V ac
- Maximum input power tolerances up to 2 W
- Probe sense voltages of 5 V dc continuous and 5 V dc pulsed
- Pilot duty power ratings of 180 VA at 120 V ac
- Minimum electrical contact life of 100 000 cycles at rated loads
- Mechanical contact life of 10 million cycles
- Operate at temperatures ranging from 20 °C to +55 °C
- Meet IEC 61000 safety requirements
- UL Listed
- DIN rail-mounted and surface-mounted versions available
- LED status indicators
- Small size and low weight
Intrinsically Safe Relays Parts
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Part Number | Actions | Input Voltage (V) | Termination Type | Intrinsically Safe Circuit Location | Maximum Input Power (W) | Mount Method | Output Load Rating (VA) | Sense Voltage |
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Part Number | Actions | Input Voltage (V) | Termination Type | Intrinsically Safe Circuit Location | Maximum Input Power (W) | Mount Method | Output Load Rating (VA) | Sense Voltage | |
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Intrinsically Safe Relays Applications
- Electric motors
- Pumps