ABB 1SDA066723R1 A1N 125 TMF 25-400 3p F F 3-Pole 25A Fixed Moulded Case Circuit Breaker for Transformer Generator Installation Protection

The ABB 1SDA066723R1 A1N 125 TMF 25-400 3p F F is a 3-pole, 25 A fixed-mount power circuit-breaker from the Formula A1 series, engineered for reliable protection of transformers, generators, and general electrical installations. Compact at just 76.2 × 130 × 60 mm and weighing 789 g, this moulded case circuit-breaker delivers robust overcurrent and short-circuit protection in demanding industrial and commercial environments.

Technical Specifications

Certifications & Standards

• CE: Compliant with applicable European Union directives for electrical equipment
• RoHS: Restriction of Hazardous Substances — free from restricted hazardous materials per EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substances
• CB Scheme Certificate: Internationally recognised safety certification under the IECEE CB Scheme
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer feeder and secondary protection in LV distribution boards
• Generator output circuit protection in standby and prime power systems
• Main and sub-distribution panel protection in industrial facilities
• Control panel incoming protection in automation and process control applications
• Commercial building electrical installation protection