2CDS253001R0405 ABB SH203-B40 MCB 3P 40A B Curve 6kA DIN Rail

The ABB S203-B40 (article 2CDS253001R0405) is a 3-pole miniature circuit breaker from the S200 series, rated at 40 A with a B tripping characteristic. It safeguards electrical circuits against overload and short circuit faults, with a breaking capacity of 6 kA AC at 230/400 V. Approved for residential, commercial and industrial installations, it fits standard DIN rail distribution boards.

Technical specifications:

• Series: S203-B40
• ABB article number: 2CDS253001R0405
• EAN: 4016779469401
• Rated current: 40 A
• Poles: 3P
• Tripping characteristic: B
• Breaking capacity: 6 kA (AC)
• Rated voltage: 230/400 V AC

Features and benefits:

• Current-limiting design reduces the energy let through during a fault, helping protect downstream wiring and equipment.
• Two independent tripping mechanisms - delayed thermal for overload events and electromechanical for short circuit response - ensure precise fault discrimination.
• Meets IEC/EN 60898-1, IEC/EN 60947-2 and UL1077, making it suitable across residential, commercial and industrial applications.
• Compatible with an optional bottom-fitting auxiliary contact that adds signalling capability while saving up to 50% of the space a side-mount accessory would require.
• B characteristic is suited to general-purpose circuits where moderate inrush currents are present.

Applications:

• Three-phase sub-distribution boards in residential and light commercial buildings.
• Protection of 3-phase final circuits in commercial switchgear and panel boards.
• Industrial control panels requiring IEC/EN or UL-listed overcurrent protection devices.
• Building services installations with 40 A three-phase loads on lighting, HVAC or socket ring circuits.

Also known as: ABB S203-B40, S203-B40 2CDS253001R0405, ABB S200 B40 MCB, ABB 3-pole 40 A circuit breaker, 2CDS253001R0405.