Description

The ABB F204A-40/0.03 is a 4-pole Type A residual current circuit breaker rated at 40 A with 30 mA sensitivity, designed to protect three-phase and neutral circuits against both sinusoidal AC and pulsating DC residual currents. The 4-pole format enables simultaneous disconnection of all three phases and the neutral conductor upon detection of a leakage current at or above the 30 mA threshold, providing comprehensive protection for three-phase supply circuits in residential, commercial, and light industrial installations. Type A sensitivity ensures compatibility with circuits supplying loads with electronic control or power conversion stages.

Compliant with IEC 61008-1 and EN 61008-1, the F204A-40/0.03 is designed for installation in 4-pole DIN rail distribution boards and switchboards. Its 40 A rating makes it appropriate for three-phase circuits serving moderate loads in small commercial premises, agricultural buildings, or three-phase domestic installations. The 30 mA tripping sensitivity satisfies the personal protection requirements of IEC 60364 and national wiring regulations, ensuring that ground fault currents at levels dangerous to human life trigger immediate circuit disconnection.

As part of ABB’s System pro M compact family, the F204A-40/0.03 integrates with ABB’s modular switchgear range in a compact, co-ordinated assembly within standard DIN rail enclosures and distribution boards. Its 4-pole design is widely used in situations where all poles of a three-phase supply must be disconnected simultaneously for safety or regulatory reasons, such as in TN-S distribution systems, industrial control panels, and commercial electrical installations. It is a reliable and standards-compliant choice for electrical contractors and panel builders working on modern three-phase electrical distribution systems.