ABB 1SDA054441R1 T5S 400 TMA 400-4000 3p F F 400A 3-Pole Fixed MCCB Power Circuit Breaker

The ABB 1SDA054441R1 T5S 400 TMA 400-4000 3p F F is a 400 A, 3-pole fixed-mount moulded case circuit breaker from the ABB Tmax T5 series, engineered for power circuit protection in transformer, generator, and installation applications. Featuring a TMA thermomagnetic trip unit with an adjustable current range of 400–4000 A, this MCCB delivers reliable overcurrent and short-circuit protection in demanding industrial environments. Its compact fixed design (140 mm × 205 mm × 103.5 mm) and robust 4.502 kg build make it well-suited for high-density distribution panels.

Technical Specifications

Certifications & Standards

• CE: Compliant with applicable European Union directives for electrical equipment safety and electromagnetic compatibility.
• 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) governing chemical substances in products.
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life recycling.

Applications & Use Cases

• Transformer secondary-side overcurrent and short-circuit protection in industrial power distribution boards.
• Generator output protection and load management in standby and prime power installations.
• Main and sub-main circuit protection in commercial and industrial switchgear panels.
• Installation protection for large motor feeder circuits and critical infrastructure switchboards.