Bender - RCM470LY-21 - Residual Current Monitor, 10 mA–10 A, 9.6–84V DC

The Bender RCM470LY-21 is a residual current monitor designed for detecting AC and pulsed DC residual currents in grounded (TN and TT) systems. Key features include:

• Adjustable Response Range: Stepless adjustment from 10 mA to 10 A, allowing flexibility across various applications.

• Response Delay: Adjustable delay ranging from 0 to 10 seconds, enabling customization to specific system requirements.

• Alarm Relay: Equipped with a voltage-free DPDT contact for signaling and control purposes.

• Operating Principle: Selectable between normally energized and normally de-energized modes, accommodating different safety philosophies.

• Fault Memory: Configurable latching (fault memory) or non-latching operation, providing adaptability to system monitoring needs.

• Test and Reset Functions: Integrated TEST and RESET buttons, with options for external activation, facilitating straightforward operational checks and fault resets.

• LED Indicators: Features a bar graph LED indicator displaying real-time residual current as a percentage of the set response value, along with status LEDs for power and alarm conditions.

• External Current Transformer Compatibility: Designed for use with Bender’s external measuring current transformers (W…, WR…, WS… series), ensuring accurate residual current measurement.

• Supply Voltage: Operates within a range of 9.6 V to 84 V DC, suitable for various low-voltage applications.

• Mounting: DIN rail mountable, facilitating easy integration into control panels and switchgear assemblies.

This residual current monitor is ideal for applications requiring continuous monitoring of residual currents to enhance electrical safety, prevent equipment damage, and reduce downtime in industrial and commercial installations.