ABB 1SDA066560R1 A3N 400 TMF 320-3200 3p F F 400A 3-Pole Fixed Air Circuit Breaker

The ABB 1SDA066560R1 A3N 400 TMF 320-3200 3p F F is a 400 A, 3-pole fixed-mounted air circuit breaker from ABB's Formula DSA series, engineered for reliable overcurrent and short-circuit protection in demanding low-voltage industrial power distribution systems. Featuring a TMF (Thermal-Magnetic Fixed) trip unit with an adjustable current range of 320–3200 A, it delivers precise and dependable protection for switchgear panels, motor control centres, and main distribution boards. The A3N 400 TMF 320-3200 3p F F is built to IEC standards and carries CE, RoHS, REACH, and WEEE compliance, making it suitable for both new installations and equipment upgrades across European and global markets.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union directives for electrical equipment, confirming conformity with applicable EU safety, health, and environmental requirements.
• IEC: Designed and tested to International Electrotechnical Commission standards for low-voltage switchgear and controlgear.
• RoHS: Restriction of Hazardous Substances compliant — free from restricted levels of lead, mercury, cadmium, and other harmful substances.
• REACH: Compliant with EU REACH regulation governing the registration, evaluation, and authorisation of chemical substances.
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for responsible end-of-life recycling and disposal.

Applications & Use Cases

• Main and sub-main protection in low-voltage switchgear and distribution boards
• Industrial power distribution panels and motor control centres (MCCs)
• Protection of busbars, cables, and transformers in manufacturing plants and process facilities
• Commercial and infrastructure projects requiring IEC-compliant open air circuit breakers
• Replacement or upgrade of existing ACBs in 3-pole fixed configurations