ABB 1SDA066565R1 A3S 630 TMF 500-5000 3p F F 630A 3-Pole Fixed Power Circuit-Breaker

The ABB 1SDA066565R1 — catalog number A3S 630 TMF 500-5000 3p F F — is a 630 A, 3-pole fixed-mounted power circuit-breaker from the Formula DSA A3 series, engineered for reliable protection of transformers, generators, and distribution installations in demanding industrial environments. Featuring a TMF (Thermal-Magnetic Fixed) trip unit with an adjustable range of 500–5000 A, this breaker delivers robust overcurrent and short-circuit protection in a compact 139.5 × 205 × 103.5 mm enclosure weighing just 4.75 kg.

Technical Specifications

Certifications & Standards

• CE: Complies with applicable European Union directives for electrical equipment safety and electromagnetic compatibility.
• IEC: Designed and tested in accordance with IEC standards for power circuit-breakers and low-voltage switchgear.
• 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 electrical components.
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life recycling and disposal.

Applications & Use Cases

The A3S 630 TMF 500-5000 3p F F is purpose-built for main and sub-main distribution boards where high fault-current interruption is essential. Typical deployments include:

• Transformer secondary protection in industrial and commercial MV/LV substations
• Generator feeder protection in standby and prime-power installations
• Main incomer protection for large distribution panels and motor control centres (MCCs)
• Busbar sectionalisation and outgoing feeder protection in switchgear assemblies

Its fixed-mounted (F F) design ensures a low-profile, cost-effective solution for applications where draw-out capability is not required, while the wide TMF setting range of 500–5000 A accommodates diverse load profiles within a single device SKU.