ABB 1SDA066732R1 A1N 125 TMF 125-1250 3p F F 125A 3-Pole Fixed Moulded Case Circuit Breaker

The ABB A1N 125 TMF 125-1250 3p F F (SKU: 1SDA066732R1) is a 125 A, 3-pole fixed-mount power circuit breaker from the Formula A1 series, engineered for reliable protection of transformers, generators, and distribution installations. Compact at 76.2 × 130 × 60 mm and weighing just 0.796 kg, the A1N 125 TMF 125-1250 3p F F delivers robust overcurrent protection in a space-efficient format suited for industrial control panels and low-voltage switchgear assemblies.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements for electrical equipment
• IEC: Designed and tested in accordance with applicable IEC standards for low-voltage circuit breakers
• RoHS: Compliant with EU Directive 2011/65/EU — restriction of hazardous substances in electrical and electronic equipment
• REACH: Complies with EU REACH regulation (EC No 1907/2006) on the safe use of chemical substances
• EU Directive 2011/65/EU: RoHS Directive compliance for restriction of hazardous substances
• Amendment 2015/863: Compliance with updated RoHS Annex II substance restrictions
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer protection in industrial and commercial LV distribution boards
• Generator protection for on-site power generation systems
• Main and feeder circuit protection in industrial switchgear panels
• Installation protection in manufacturing, process, and building automation environments
• Fixed-mount applications requiring compact, high-performance overcurrent protection