2CDS251001R0505 ABB SH203-B50 MCB 1P 50A B Curve 6kA DIN Rail

The ABB S201-B50 (article 2CDS251001R0505) is a 1-pole, 50 A miniature circuit breaker from the ABB S200 series, with Type B tripping characteristic and an AC breaking capacity of 6 kA. It protects single-phase circuits against both overload and short-circuit faults using two independent tripping mechanisms.

Technical specifications:

• Series: S201-B50
• ABB article number: 2CDS251001R0505
• EAN: 4016779550925
• Type: Miniature Circuit Breaker (MCB)
• Poles: 1P
• Rated current: 50 A
• Tripping characteristic: B
• Breaking capacity: 6 kA (AC)
• Standards: IEC/EN 60898-1, IEC/EN 60947-2, UL1077

Features and benefits:

• Current limiting design reduces let-through energy during fault events.
• Delayed thermal element handles overload protection; a separate electromechanical element responds to short-circuit conditions.
• Type B characteristic is well matched to resistive and lightly inductive loads where inrush currents are modest.
• Accepts a bottom-fitting auxiliary contact without additional rail space, reducing the footprint by up to 50% compared to a side-mounted auxiliary.
• Certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL1077, making it suitable across residential, commercial, and industrial installations.

Applications:

• Residential consumer units and distribution boards
• Commercial building sub-distribution panels
• Industrial control cabinet branch circuit protection
• Single-phase 50 A final circuits in switchboards

Also known as: ABB S201-B50, S201 B50, 2CDS251001R0505, ABB 50 A Type B 1-pole MCB, ABB S200 50 A MCB.