ABB 1SDA067439R1 XT1S 160 TMD 50-500 4p F F 50A 4-Pole Fixed Molded Case Circuit Breaker

The ABB 1SDA067439R1 (XT1S 160 TMD 50-500 4p F F) is a 50 A, 4-pole, fixed-mounted molded case circuit breaker (MCCB) from the Tmax XT1 range, ABB's current-generation MCCB series (160 A frame). It is fitted with a thermal-magnetic (TMD) trip unit and is rated 50 kA Icu at 400 V AC. Dimensions (W × H × D) are 101.6 mm × 130 mm × 70 mm and weight is 1.4 kg.

Technical Specifications

Certifications & Standards

• IEC 60947-2: Low-voltage switchgear and controlgear, circuit breakers
• CE: Conforms to European Union safety, health, and environmental protection requirements
• ATEX: Certified for use in potentially explosive atmospheres
• VDE: Tested and certified by the German Association for Electrical, Electronic & Information Technologies
• RoHS: Compliant with EU Directive 2011/65/EU on restriction of hazardous substances
• REACH: Compliant with EU REACH regulation on chemical safety
• EU Directive 2011/65/EU: RoHS directive compliance
• Amendment 2015/863: Compliance with updated RoHS substance restrictions
• UL 2799: Certified to UL standard for electrical systems

Selection Notes

• Rated current is 50 A; check it against the continuous load current of the circuit being protected.
• Icu is 50 kA at 400 V AC; confirm it is equal to or higher than the prospective fault current at the installation point.
• This is a 4-pole version; use it where the neutral conductor must be switched, and confirm the pole count matches the system. Mounting is fixed (not plug-in or withdrawable).
• The TMD trip unit is thermal-magnetic; check the thermal setting and magnetic trip values in the ABB catalog against the load and the protection coordination plan.