2CDS272061R0558 ABB S202M-Z40UC 40 A 2-Pole Type Z Miniature Circuit Breaker 10 kA

Why Choose the ABB S202M-Z40UC Miniature Circuit Breaker?

The ABB S202M-Z40UC is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in both AC and DC electrical systems. As part of the ABB System pro M compact S200 M UC universal-current series, it combines flexible AC/DC operation with robust protection for industrial, automation, DC distribution and traction applications.

Featuring a 40 A rated current, Type Z tripping characteristic and 10 kA rated short-circuit breaking capacity, the S202M-Z40UC is particularly suitable for circuits requiring sensitive magnetic overcurrent protection. The Z characteristic provides rapid response to relatively low overcurrent multiples, making it useful for protecting sensitive electronic, semiconductor and control equipment.

The two-pole configuration provides protection across two conductors, while the universal-current design supports applications up to 440 V AC / 440 V DC according to IEC/EN 60947-2. Its compact modular construction, DIN-rail mounting and compatibility with System pro M compact accessories make it straightforward to integrate into industrial distribution and control panels.

Key Advantages

• High-performance 2-pole miniature circuit breaker for AC and DC applications.
• 40 A rated current for industrial power and control circuits.
• Type Z tripping characteristic for sensitive overcurrent protection.
• 10 kA rated short-circuit breaking capacity.
• Universal-current design provides flexible AC and DC circuit protection.
• Rated operational voltage up to 440 V AC / 440 V DC.
• Compatible with the established ABB System pro M compact accessory range.
• Compact DIN-rail format simplifies installation in distribution and control panels.

Key Features

• ABB System pro M compact S200 M UC series.
• 2-pole configuration with two protected poles.
• 40 A rated current.
• Type Z tripping characteristic.
• 10 kA breaking capacity at 440 V AC and 440 V DC.
• Rated ultimate short-circuit breaking capacity of 25 kA at 220 V DC.
• UL 1077 interrupting rating of 10 kA at 500 V DC.
• Designed for AC and DC circuit protection.
• Power loss of approximately 8.6 W at rated operating conditions.
• Compact 35 × 88 × 69 mm modular construction.

Sensitive AC and DC Circuit Protection

Miniature circuit breakers such as the ABB S202M-Z40UC protect electrical wiring and connected equipment against excessive current caused by overloads and short circuits. Thermal and magnetic operating mechanisms automatically disconnect the protected circuit when abnormal current conditions occur, helping protect conductors and connected equipment from damage.

The Type Z characteristic provides sensitive magnetic tripping and is particularly useful for electronic equipment, control circuits and other loads requiring rapid response to comparatively low overcurrent levels. Combined with the universal AC/DC capability and high short-circuit performance of the S200 M UC platform, the S202M-Z40UC provides a flexible protection solution for industrial automation, DC distribution and traction systems.

Typical Applications

• Industrial automation and control systems.
• Sensitive electronic and semiconductor equipment.
• DC power distribution systems.
• Railway and traction electrical systems.
• Industrial control and distribution panels.
• Machine building and OEM electrical equipment.
• AC and DC circuits requiring sensitive Type Z protection.