Schneider Electric EZ9R63440 Easy9 RCCB 4P 40A 400V Residual Current Circuit Breaker

The Schneider Electric EZ9R63440 is a 4-pole 40A 400V residual current circuit breaker (RCCB) from the Easy9 series, engineered for reliable earth leakage protection in residential, commercial, and light industrial distribution boards. The EZ9R63440 provides essential fault current detection, automatically disconnecting the circuit upon sensing a leakage current to protect personnel and equipment. Compact and DIN rail mountable, this Easy9 RCCB is ideal for panel builders and installers seeking dependable, space-efficient protection.

Technical Specifications

Applications & Use Cases

• Residential distribution boards: Earth leakage protection for domestic final circuits and sub-panels.
• Commercial installations: Protection of lighting and power circuits in offices, retail, and hospitality environments.
• Light industrial panels: Fault current detection in control panels and machinery enclosures operating at 400V.
• Panel building: DIN rail mounting enables seamless integration into standard modular enclosures alongside MCBs and other Easy9 devices.