Ground fault monitor for grounded AC/DC systems

The RCMA470LY monitors for ground fault leakage current in grounded & high-resistance grounded single & three-phase AC, pulsed DC, and pure DC type systems (Type B). Features include two seperately adjustable setpoints from 30mA...3mA for the main alarm and 50% of the set value for the pre-alarm, LED meter display (0-100%), adjustable time delay from 0...1 s for the pre-alarm and 0...10sec for the main alarm, fault storage, 2 DPDT alarm relays which can be set for normally energized and normally de-energized operation. An external BENDER current transformer is required for operation.

The RCMA470LY has a lower starting setpoint range than the RCMA471LY, and uses smaller current transformers.

  Also required: Current transformer from the WB series. Datasheet
  Use our CT Selector to find the correct and optimal CT for your system.

 Technical Specs                 Datasheet

Ground fault monitor for grounded AC/DC systems with internal CT

The RCMA475LY monitors for ground fault leakage current in grounded & high-resistance grounded single & three-phase AC, pulsed DC, and pure DC type systems (Type B). Features include two seperately adjustable setpoints from 30mA...500mA for the main alarm and 50% of the set value for the pre-alarm, LED meter display (0-100%), adjustable time delay from 0...1 s for the pre-alarm and 0...10sec for the main alarm, fault storage, 2 DPDT alarm relays which can be set for normally energized and normally de-energized operation. Includes a built-in 18mm current transformer.

  Unit uses internal current transformer; external CT not required.

 Technical Specs                 Datasheet

Digital ground fault monitor for grounded AC/DC systems

The RCMA420 monitors for ground fault leakage current in grounded and high-resistance grounded single- and three-phase AC, pulsed DC, and pure DC systems (Type B). Features include adjustable setpoint from 10ma...10A, LCD display, adjustable time delay, fault storage, 2 SPDT alarm relays which can be set for normally energized and normally de-energized operation. An external BENDER current transformer is required for operation.

  Also required: Current transformer from the WAB series. Datasheet
  Use our CT Selector to find the correct and optimal CT for your system.

 Technical Specs                 Datasheet

Ground fault monitor for grounded AC/DC systems

The RCMA471LY monitors for ground fault leakage current in grounded & high-resistance grounded single & three-phase AC, pulsed DC, and pure DC type systems (Type B). Features include two seperately adjustable setpoints from 100mA...3mA for the main alarm and 50% of the set value for the pre-alarm, LED meter display (0-100%), adjustable time delay from 0...1 s for the pre-alarm and 0...10sec for the main alarm, fault storage, 2 DPDT alarm relays which can be set for normally energized and normally de-energized operation. An external BENDER current transformer is required for operation.

The RCMA471LY has a higher starting setpoint range than the RCMA470LY, but can use larger sized current transformers.

  Also required: Current transformer from the WB series. Datasheet
  Use our CT Selector to find the correct and optimal CT for your system.

 Technical Specs                 Datasheet