2CDS272334R0458 ABB ST202M-Z15 15 A 2-Pole Type Z Miniature Circuit Breaker

Why Choose the ABB ST202M-Z15 Miniature Circuit Breaker?

The ABB ST202M-Z15 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable supplementary overcurrent and short-circuit protection for sensitive industrial control equipment and electrical circuits. As part of the robust ABB ST200M series, it combines a 15 A rated current with a Type Z tripping characteristic for responsive protection of sensitive electrical and electronic loads.

Designed for supplementary protection in accordance with UL 1077, the ST202M-Z15 uses thermal-magnetic operation to disconnect protected circuits during overload and short-circuit conditions. Its Type Z characteristic provides a sensitive instantaneous response, making the breaker particularly useful for circuits where rapid fault interruption is required to protect vulnerable equipment.

With two protected poles, a rated current of 15 A and a Type Z characteristic, this breaker is well suited to control, automation and electronic equipment circuits with relatively low normal inrush currents. ABB order code 2CDS272334R0458 provides precise product identification for specification, procurement and replacement.

Key Advantages

• Reliable 2-pole supplementary circuit protection for industrial electrical equipment.
• 15 A rated current suitable for control and sensitive equipment circuits.
• Type Z tripping characteristic for responsive protection of sensitive loads.
• Designed for supplementary protection in accordance with UL 1077.
• Thermal-magnetic protection against overload and short-circuit conditions.
• Compact modular construction simplifies DIN-rail installation in control panels.

Key Features

• ABB ST200M miniature circuit breaker series.
• 2-pole configuration.
• 15 A rated current.
• Type Z tripping characteristic.
• 15 kA short-circuit breaking capacity.
• Thermal-magnetic overcurrent protection.
• UL 1077 supplementary protector classification.
• Compact modular format for DIN-rail mounting.

Reliable Protection for Sensitive Electrical Circuits

Miniature circuit breakers such as the ABB ST202M-Z15 automatically disconnect protected circuits when excessive current results from an overload or short circuit. Unlike a fuse, the breaker can be reset after the electrical fault has been identified and corrected, helping simplify maintenance in industrial automation and control systems.

The Type Z operating characteristic is intended for circuits requiring a sensitive magnetic response, making it particularly useful for electronic equipment, control circuits and other loads with relatively low inrush currents. Combined with the ST200M series' compact modular construction and high breaking capacity, this makes the ST202M-Z15 a practical supplementary protection device for sensitive industrial equipment.

Typical Applications

• Industrial control panels and automation equipment.
• Electronic equipment and sensitive electrical loads.
• PLC and control-system circuits.
• Instrumentation and measurement equipment.
• Industrial machinery and OEM electrical assemblies.
• Supplementary circuit protection where UL 1077 devices are specified.