1SDA050955R1_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Specifications Parameter Specification Part Number / Model 1SDA050955R1 Product Type Molded Case Circuit Breaker (MCCB) Series / Family ABB Tmax T2N Trip Unit Type Thermo‑magnetic (TMD) Number of Poles 3 poles (3P) Rated Current (In) 50 A Rated Operational Voltage (Ue) Up to 690 V AC typical Overload Trip Adjustment Adjustable thermal range (approx. 50–500 A range on TMD unit) Short‑Circuit Protection Fixed magnetic trip (part of TMD release) Rated Ultimate Breaking Capacity (Icu) 36 kA (at 400 V AC class typical) Rated Service Breaking Capacity (Ics) Similar to Icu at common system voltages Connection Type Front terminals Mounting Fixed installation Standards Compliance IEC 60947‑2 (typical for Tmax series) Degree of Protection IP20 (typical) Typical Width ~90 mm Approx. Weight ~1.1 kg

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DESCRIBE

The ABB 1SDA050955R1 is a three‑pole molded case circuit breaker (MCCB) from the ABB Tmax T2N family designed for low‑voltage power distribution protection. It incorporates a thermo‑magnetic (TMD) trip unit with adjustable overload settings and fixed short‑circuit protection. This circuit breaker is suitable for protecting three‑phase circuits up to 50 A, providing reliable overload and short‑circuit interruption in industrial and commercial electrical systems. Its robust design, front connections, and high interrupting capacity make it ideal for feeder, branch, and general circuit protection applications

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