Bender RCM470LY-11 Residual Current Monitor

Product Overview

The Bender RCM470LY-11 is a Residual Current Monitor (RCM) designed to continuously monitor residual currents in earthed AC power systems. It detects insulation faults and leakage currents at an early stage without interrupting the power supply, improving system safety and availability.

The unit is part of the Bender RCM470LY series and is mainly used in industrial power distribution, automation systems, and electrical installations requiring continuous leakage current monitoring.

Main Specifications

• Manufacturer: Bender
• Model: RCM470LY-11
• Product Type:
  • Residual Current Monitor
  • Earth Leakage Monitor
  • Insulation Fault Monitoring Device
• Power Supply: AC 24 V
• Frequency Range: 40–400 Hz
• Power Consumption: ≤ 3 VA
• Residual Current Measuring Range: 10 mA … 10 A
• Measurement Type: Type A residual current monitoring
• Relay Output: 1 changeover contact (1 x 2 CO)
• Rated Contact Voltage: AC 250 V / DC 300 V
• Switching Capacity: AC/DC 5 A
• Mounting: DIN rail mounting

Technical Functions

The RCM470LY-11 provides:

• Continuous residual current monitoring
• Early detection of insulation degradation
• Leakage current alarm output
• Fault memory function
• Adjustable response current
• Adjustable response delay

Working principle:

Electrical System → Measuring Current Transformer → RCM470LY-11 → Alarm Relay Output → Control System

Features & Advantages

• Original Bender industrial monitoring device
• Prevents unexpected equipment shutdowns
• Detects leakage currents before serious faults occur
• Improves electrical system reliability
• Suitable for continuous operation
• Compact DIN rail installation
• Supports external measuring current transformers

Applications

Used in:

• Industrial automation systems
• Power distribution cabinets
• Manufacturing plants
• Data centers
• Medical facilities
• Control panels
• Critical electrical installations

Typical applications:

• Ground fault monitoring
• Leakage current detection
• Preventive electrical maintenance
• Power system safety monitoring