ABB 2CSF204001R3950 F204 AC-125/0.3 4P 125A 300mA 10kA Residual Current Circuit Breaker

The ABB F204 AC-125/0.3 (SKU: 2CSF204001R3950) is a 4-pole residual current circuit breaker from the ABB F200 series, rated at 125A with a 300mA tripping sensitivity and a 10kA breaking capacity at 230/400V AC. Designed for DIN rail installation, this Type AC RCCB provides reliable earth fault protection in industrial and commercial distribution boards, safeguarding personnel and equipment against dangerous leakage currents.

Technical Specifications

Certifications & Standards

• IEC 61008: International standard for residual current operated circuit-breakers without integral overcurrent protection for household and similar uses
• EN 61008: European harmonised standard equivalent to IEC 61008, confirming compliance for EU markets
• IEC/EN 61008: Combined IEC and EN certification, confirming dual international and European compliance
• RoHS: Restriction of Hazardous Substances — product is free from restricted hazardous materials including lead, mercury, and cadmium
• REACH: Compliance with EU REACH regulation on the registration, evaluation, authorisation, and restriction of chemicals
• WEEE: Compliance with the Waste Electrical and Electronic Equipment directive for responsible end-of-life disposal

Applications & Use Cases

• Earth fault and personnel protection in three-phase distribution boards and sub-distribution panels
• Protection of outgoing circuits in commercial buildings, factories, and industrial facilities
• Main RCCB for downstream branch circuit protection in TN-S and TT earthing systems
• Complementary use alongside MCBs in residential and light commercial installations requiring high-current RCCB coverage
• Control panel and switchgear assemblies requiring DIN rail-mounted residual current protection at up to 125A