ABB 1SDA066731R1 A1N 125 TMF 100-1000 3p F F 3-Pole 100A Fixed Moulded Case Circuit Breaker

The ABB A1N 125 TMF 100-1000 3p F F (SKU: 1SDA066731R1) is a 3-pole, 100 A fixed-mounted power circuit breaker from the Formula A1 series, engineered for reliable protection of transformers, generators, and general electrical installations. Designed to IEC standards, this compact breaker measures just 76.2 × 130 × 60 mm and weighs 0.803 kg, making it ideal for space-constrained control panel applications in industrial and commercial environments.

Technical Specifications

Certifications & Standards

• CE: Compliant with European Union directives for electrical equipment placed on the EU market
• IEC: Designed and tested in accordance with IEC standards for power circuit breakers
• RoHS: Compliant with EU Restriction of Hazardous Substances directive (2011/65/EU)
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substances
• WEEE: Registered under the EU Waste Electrical and Electronic Equipment directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer feeder and secondary-side overcurrent protection
• Generator circuit protection in standby and prime power installations
• Main and sub-distribution board protection in industrial plants
• Motor branch circuit and installation protection in commercial buildings
• Control panel integration requiring compact 3-pole fixed circuit breakers