Bender RCM475LY-13

  • Product Name:​ Residual Current Monitor (Type A, RCM475LY-13)
  • Product Introduction:​ DIN-rail residual current alarm monitor for TN/TT systems, detects AC and pulsating DC leakage without tripping the supply, intended for pre-fault alarm and insulation trend monitoring.
Category:
Description
  • Technical Specifications:
    • Measuring Method:​ Internal current transformer Ø18 mm window
    • Response Value:​ Adjustable 10 mA – 10 A (50/60 Hz)
    • Delay:​ Adjustable 0–10 s
    • Output:​ 2 potential-free changeover relay contacts (NO/NC selectable)
    • Indication:​ LED bar graph 0–100 % of IΔn, alarm LED, test/reset button
    • Supply:​ External auxiliary voltage (device variant dependent, 230 VAC typical)
    • Standard:​ DIN EN 62020 / IEC 62020, Type A per IEC/TR 60755
    • Approvals:​ CE, EAC, UL listed
    • Mounting:​ Screw or DIN adapter, sealable transparent cover
  • Functional Features:​ Load-current independent measurement, fault memory selectable, external test button connectable, PE/N-PE conductor monitoring.
  • Application Scenarios:​ UPS rooms, hospital auxiliary circuits, refrigeration warehouses, unattended vending/signage, EDP server racks.
  • Installation Requirements:​ Pass all live conductors (including N) through sensing window, separate auxiliary supply from monitored circuit if galvanic separation needed, bond PE properly.
  • Usage Notes:​ Monitor only—does not disconnect power; must be paired with upstream RCD/MCB for protection; periodic push-button test recommended; bar graph gives early warning before threshold.
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