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Power Circuit Barrier

Type of Safety Barriers



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MR-600 RelayMR-600 Relay
RT RS25RT RS25
RT RS50RT RS50
RT RS75RT RS75
MR-600 Relay RT RS25 RT RS50 RT RS75
RT RS100RT RS100
RT SP150RT SP150
RT SP200RT SP200
RT SP240RT SP240
RT RS100 RT SP150 RT SP200 RT SP240
RT-P01-28-1RT-P01-28-1
RT-P01-28-2RT-P01-28-2
RT-P01-28-4RT-P01-28-4
optical communication isolatoroptical communication isolator
RT-P01-28-1 RT-P01-28-2 RT-P01-28-4 EZ-Comm Barrier (Optical Isolater)
Contact Sales

These MSHA approved Power Circuit Barriers are available based on the chart below.

Power Circuit Barriers (PCB)

MSHA Approval


Linear PCB ModelWattageOutPut Voltage DCIsolation I/P-O/P
RT-POI-28-128 Watts283750VAC
RT-POI-28-256 Watts283750VAC
RT-POI-28-384 Watts283750VAC
RT-POI-28-4112 Watts283750VAC

Switching PCB ModelWattageOutPut Voltage DCIsolation I/P-O/PIsolation Resistance
RT-RS25 Series25 Watts3.3, 5, 12, 15, 24, 483000VAC100M Ohm/500VDC
RT-RS50 Series50 Watts3.3, 5, 12, 15, 24, 483000VAC100M Ohm/500VDC
RT-RS75 Series75 Watts12, 15, 24, 483000VAC100M Ohm/500VDC
RT-RS100 Series100 Watts12, 15, 24, 483000VAC100M Ohm/500VDC
RT-SP150 Series150 Watts24, 483000VAC100M Ohm/500VDC
RT-SP200 Series200 Watts24, 27, 483000VAC100M Ohm/500VDC
RT-SP240 Series240 Watts24, 30, 483000VAC100M Ohm/500VDC

Relay PCB ModelMax AmpsCoil VoltagesIsolation I/P-O/PMax Voltage
MR-600 Relay AC10 amps6-240VAC2000VAC240VRMS
MR-600 Relay DC10 amps6-110VDC2000VAC240VRMS

Optical Power Circuit BarrierVoltage RatingType of Isolation
EZ-Comm Barrier10,000 VoltsOptical


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