ABB 1SDA066563R1 A3S 400 TMF 400-4000 3p F F 400A 3-Pole Fixed Air Circuit Breaker

The ABB 1SDA066563R1 — catalog number A3S 400 TMF 400-4000 3p F F — is a 400 A, 3-pole fixed-mount air circuit breaker from the ABB Formula A3S series, engineered for reliable overcurrent and short-circuit protection in low-voltage power distribution systems. Featuring a TMF (Thermal-Magnetic Fixed) trip unit with an adjustable range of 400–4000 A, this ACB delivers robust performance in industrial switchgear panels, main distribution boards, and critical infrastructure applications.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union CE marking directives for electrical equipment
• IEC: Designed and tested in accordance with IEC standards for low-voltage switchgear and controlgear
• RoHS: Compliant with the Restriction of Hazardous Substances Directive (2011/65/EU)
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substances
• WEEE: Compliant with Waste Electrical and Electronic Equipment Directive for end-of-life disposal

Applications & Use Cases

• Main and sub-main distribution boards in industrial facilities
• Protection of busbars, cables, and downstream switchgear in low-voltage switchgear panels
• Power distribution in manufacturing plants, data centres, and commercial buildings
• Generator and transformer feeder protection
• Critical infrastructure requiring dependable overcurrent and short-circuit protection