ABB 2CSJ201001R0002 RD3 Type A 500mA 230-400V AC 3.6W Residual Current Monitor

The ABB RD3 (2CSJ201001R0002) is a Type A Residual Current Monitor designed to continuously supervise earth leakage currents in AC electrical installations. The RD3 operates across a rated voltage range of 230–400 V AC, responds at an adjustable threshold of 500 mA, and consumes only 3.6 W — making it a compact, energy-efficient solution for panel builders and maintenance engineers who need reliable insulation fault detection. Certified to IEC EN 60947-2 and carrying CE and RoHS marks, the ABB RD3 is ready for deployment in industrial control panels and building automation systems worldwide.

Technical Specifications

Certifications & Standards

• CE: Complies with applicable EU harmonisation legislation
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances
• EU Directive 2011/65/EU: RoHS2 directive compliance confirmed
• Amendment 2015/863: EU Commission Delegated Directive (RoHS3) compliance confirmed
• IEC EN 60947-2: Low-voltage switchgear and controlgear — circuit-breakers standard
• EN 60947-2: European harmonised standard for low-voltage switchgear and controlgear
• WEEE: Waste Electrical and Electronic Equipment Directive — compliant disposal marking

Applications & Use Cases

• Continuous earth leakage monitoring in industrial control panels and distribution boards
• Insulation fault detection in manufacturing and process automation environments
• Building automation systems requiring residual current supervision
• Preventive maintenance monitoring to reduce unplanned downtime
• Protection of sensitive equipment where nuisance tripping from conventional RCDs must be avoided