ABB 1SDA066761R1 A1N 125 TMF 40-400 4p F F 40A 4-Pole Fixed Moulded Case Circuit Breaker

The ABB A1N 125 TMF 40-400 4p F F (SKU: 1SDA066761R1) is a 40 A, 4-pole fixed-mount power circuit breaker from the Formula A1 series, engineered for robust protection of transformers, generators, and electrical installations in industrial and commercial control panels. With compact dimensions of 101.6 × 130 × 60 mm and a weight of just 1 kg, the A1N 125 TMF 40-400 4p F F delivers reliable overcurrent and short-circuit protection in a space-efficient design suitable for demanding applications.

Technical Specifications

Certifications & Standards

• CE: Conforms to European Union directives for electrical 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 2011/65/EU
• REACH: Meets EU REACH regulation requirements for chemical safety
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer feeder and secondary-side protection in industrial switchboards
• Generator output circuit protection in standby and prime power applications
• Main and sub-distribution panel protection in commercial and industrial facilities
• Motor feeder protection in automation and control panel assemblies
• Installation protection in building services and infrastructure projects