ABB 1SDA066756R1 A1C 125 TMF 125-1250 4p F F 4-Pole 125A Fixed Moulded Case Circuit Breaker

The ABB 1SDA066756R1 A1C 125 TMF 125-1250 4p F F is a 4-pole, 125 A fixed-mounted power circuit breaker from the Formula A1 series, engineered for reliable protection of transformers, generators, and electrical installations in demanding industrial environments. The A1C 125 TMF 125-1250 4p F F delivers a breaking capacity of 30 kA at 240 V AC, housed in a compact fixed chassis measuring 101.6 mm (W) × 130 mm (H) × 60 mm (D) and weighing just 1 kg.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union directives for electrical equipment safety and electromagnetic compatibility
• IEC: Designed and tested in accordance with IEC standards for low-voltage circuit breakers
• RoHS: Compliant with EU Restriction of Hazardous Substances Directive, restricting the use of specified hazardous materials
• REACH: Meets EU REACH regulation requirements regarding the safe use of chemical substances
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer feeder and secondary-side overcurrent protection in industrial switchboards
• Generator protection in standby and prime-power installations
• Main and sub-distribution panel protection for commercial and industrial buildings
• Control panel incoming protection where a compact 4-pole fixed breaker is required
• Motor control centres and process automation panels requiring IEC-compliant circuit protection