Technical Overview

• Model: RCM470LY
• Part Number: B94012017
• Supply Voltage: 230 VAC, 40–400 Hz
• Response Delay: Adjustable from 0 to 10 seconds
• Operating Temperature: –10°C to +55°C
• Circuit Resistance: 180 ohms
• Protection Class: IP30
• Mounting Options: DIN rail or screw mount using top/bottom clips

 Functional Highlights

• Monitors residual currents in single-phase and three-phase AC systems
• Can supervise normally non-current-carrying conductors (e.g., PE, PA lines)
• Uses external measuring current transformers (unlike the RCM475LY which has an internal CT)
• LED bar graph shows residual current levels relative to the set threshold
• Alarm relay activates when current exceeds the set value after delay
• Includes Test and Reset buttons for manual checks and fault clearing

Application & Usage

• Ideal for industrial panels, switchgear, and control cabinets
• Helps prevent electrical hazards by detecting insulation faults early
• Supports cable lengths up to 130 feet using AWG 22 shielded cable

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