2CDS272334R0254 ABB ST202M-C25 Miniature Circuit Breaker 15kA 2P C 25A UL 1077

Why Choose the ABB ST202M-C25 Miniature Circuit Breaker?

The ABB ST202M-C25 is a robust two-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection in industrial, commercial and machine-building electrical systems. As part of the ABB System pro M compact ST200M series, it combines a C tripping characteristic with a 25 A rated current for dependable protection across a wide range of industrial electrical applications.

Designed for applications requiring UL 1077 supplementary protection, the ST202M-C25 provides two-pole circuit protection in a compact DIN rail format. Its C tripping characteristic accommodates moderate starting and inrush currents, making it suitable for control equipment, machinery, auxiliary circuits and other general industrial electrical loads.

With a rated current of 25 A, a two-pole configuration and an ultimate short-circuit breaking capacity of 15 kA at 400 V AC and 125 V DC according to IEC 60947-2, the ST202M-C25 provides robust supplementary protection for demanding installations. It also provides a 10 kA interrupting rating according to UL 1077 at 240 V AC, 480Y/277 V AC and 125 V DC.

Key Advantages

• Compact two-pole miniature circuit breaker for supplementary circuit protection.
• 25 A rated current suitable for industrial control, machinery and auxiliary circuits.
• C tripping characteristic accommodates moderate starting and inrush currents.
• 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC according to IEC 60947-2.
• 10 kA UL 1077 interrupting rating at specified AC and DC voltages.
• Compact DIN rail construction enables straightforward integration into industrial electrical panels and OEM equipment.

Key Features

• ABB System pro M compact ST200M series.
• 25 A rated current.
• 2-pole configuration.
• C tripping characteristic.
• 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC.
• 11.2 kA service short-circuit breaking capacity at 400 V AC.
• 400 V AC rated operational voltage according to IEC 60947-2.
• 440 V rated insulation voltage.
• 4 kV rated impulse withstand voltage.
• 10 kA interrupting rating according to UL 1077 at specified voltages.
• Designed in accordance with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
• Compact two-pole DIN rail format for industrial control and distribution panels.

Reliable Supplementary Protection for Industrial Electrical Systems

Miniature circuit breakers such as the ABB ST202M-C25 automatically interrupt a circuit when excessive current caused by an overload or short circuit is detected. This helps protect conductors and connected electrical equipment while providing convenient resettable protection for industrial control, auxiliary and machine-building circuits.

The C characteristic provides a practical balance between fault protection and tolerance of moderate transient currents, making the ST202M-C25 suitable for many industrial electrical loads. Combined with its 25 A rating, two-pole configuration and high IEC short-circuit breaking capacity, it provides a compact supplementary protection solution for automation panels, machinery and OEM electrical equipment.

Typical Applications

• Industrial machinery and electrical control panels.
• Automation and process-control equipment.
• Control and auxiliary electrical circuits.
• Circuits with moderate starting or inrush currents.
• Commercial and industrial electrical equipment.
• OEM machinery requiring UL 1077 supplementary protection.