2CDS271334R0305 ABB ST201M-B30 Miniature Circuit Breaker 30 A 1P Type B

Why Choose the ABB ST201M-B30 Miniature Circuit Breaker?

The ABB ST201M-B30 is a compact and reliable single-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection in industrial electrical and control applications. As part of the ABB ST200M miniature circuit breaker series, it combines a 30 A rated current with a B tripping characteristic and UL 1077 supplementary protection capability.

Designed for installation on DIN rail systems, the ST201M-B30 provides dependable circuit protection in a compact modular format. Its thermal-magnetic operating principle provides protection against sustained overload currents and short-circuit conditions, while the B characteristic is suited to circuits with comparatively low inrush currents.

With a rated current of 30 A, B tripping characteristic, 15 kA short-circuit breaking capacity and a single-pole configuration, the ST201M-B30 is suitable for supplementary protection in machinery, control panels, automation equipment and other industrial electrical systems. ABB order code 2CDS271334R0305 identifies this specific ST200M configuration.

Key Advantages

• Compact single-pole miniature circuit breaker for supplementary circuit protection.
• 30 A rated current for industrial and control applications.
• B tripping characteristic suitable for circuits with relatively low inrush currents.
• 15 kA short-circuit breaking capacity for robust fault protection.
• Provides thermal-magnetic protection against overload and short-circuit conditions.
• UL 1077 supplementary protector design for equipment and control circuits.
• DIN rail mounting enables straightforward integration into electrical panels.

Key Features

• ABB ST200M miniature circuit breaker series.
• 30 A rated current.
• 1-pole configuration.
• Type B tripping characteristic.
• 15 kA short-circuit breaking capacity.
• UL 1077 supplementary protection for electrical equipment and control circuits.
• Thermal-magnetic operating mechanism for overload and short-circuit protection.
• Compact modular construction for DIN rail installations.

Reliable Supplementary Protection for Electrical Equipment

Miniature circuit breakers such as the ABB ST201M-B30 automatically interrupt a circuit when excessive current occurs due to an overload or short circuit. This helps protect wiring and electrical equipment while allowing the breaker to be reset after the fault has been identified and corrected.

The ABB ST200M series is designed for supplementary protection in equipment and industrial control applications. Its compact modular construction, DIN rail mounting and thermal-magnetic operating mechanism make it well suited to control panels, machinery and automation systems where dependable circuit protection is required.

Typical Applications

• Industrial machinery and equipment control panels.
• Automation and process control systems.
• Control and auxiliary circuits.
• Power supplies and electrical equipment.
• Circuits with relatively low inrush currents.
• OEM machinery and electrical cabinet assemblies.