ABB 1SDA067445R1 XT1S 160 TMD 125-1250 4p F F InN=100% 4-Pole 125A Fixed Moulded Case Circuit Breaker

The ABB 1SDA067445R1 XT1S 160 TMD 125-1250 4p F F InN=100% is a 4-pole fixed-mounted moulded case power circuit breaker from the ABB Tmax XT1 series, designed for transformer, generator, and installation protection in industrial power distribution systems. Featuring a TMD (thermal-magnetic) trip unit and a rated current range of 125–1250 A, this breaker delivers reliable overload and short-circuit protection. Its compact 101.6 mm × 130 mm footprint and 1.4 kg weight make it ideal for space-constrained control panels and switchgear assemblies.

Technical Specifications

Certifications & Standards

• IEC 60947-2: International standard for low-voltage switchgear — circuit breakers (dual-referenced as IEC60947-2)
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements for market placement
• VDE: Verband der Elektrotechnik — German electrotechnical certification confirming compliance with European electrical standards
• ATEX: Certified for use in explosive atmospheres in accordance with EU ATEX Directive
• RoHS: EU Directive 2011/65/EU — restriction of hazardous substances in electrical and electronic equipment
• Amendment 2015/863: RoHS Annex II amendment expanding the restricted substances list
• REACH: EU Regulation (EC) No 1907/2006 — registration, evaluation, authorisation, and restriction of chemicals
• UL 2799: UL certification standard applicable to this product class
• WEEE: EU Waste Electrical and Electronic Equipment Directive — compliant with disposal and recycling obligations

Applications & Use Cases

• Transformer feeder and secondary protection in industrial distribution boards
• Generator output protection and circuit isolation
• Main and sub-main circuit protection in commercial and industrial installations
• Motor feeder circuits requiring high breaking capacity protection
• Switchgear panels in manufacturing, utilities, and infrastructure projects
• Hazardous area installations requiring ATEX-rated equipment