BENDER RCM420-D-2

BENDER RCM420-D-2 is a LINETRAXX® residual current monitor (Type A) for TN and TT earthed power systems, powered by AC/DC 100–250V (operating range 70–300V). The residual current monitor continuously detects leakage and residual fault current via external current transformers in low-voltage power distribution networks. The residual current monitor supports two independent adjustable alarm thresholds, providing pre-warning and main alarm relay outputs for early fault identification. The residual current monitor comes with LCD digital readout and LED status indicators for power, pre-alarm and main alarm. The residual current monitor monitors CT wiring integrity and offers internal/external test & reset function for routine safety inspection.

BENDER RCM420-D-2 adopts standard DIN rail mounting design for quick installation inside power distribution cabinets. The leakage monitoring module measures AC and pulsed DC residual current with frequency coverage from 42Hz up to 2000Hz. The leakage monitoring module features configurable start, response and release delay timers to avoid false tripping caused by transient current spikes. The leakage monitoring module supports password protection for parameter settings and built-in device self-test to check hardware health automatically. The leakage monitoring module has Lloyd’s Register marine certification, suitable for industrial and marine power supply systems.

BENDER RCM420-D-2 is widely used in marine power systems, refineries, chemical plants and industrial low voltage distribution cabinets. The industrial spare part can replace defective monitoring units to restore residual current leakage supervision rapidly. The industrial spare part matches original electrical specifications for direct DIN rail mounting replacement. The industrial spare part has clear part marking for fast identification and stock management. The industrial spare part reduces power system downtime during equipment overhaul and safety loop maintenance.