2CDS271334R0608 ABB ST201M-Z63 Miniature Circuit Breaker 63 A 1P Z UL1077

Why Choose the ABB ST201M-Z63 Miniature Circuit Breaker?

The ABB ST201M-Z63 is a compact and dependable single-pole miniature circuit breaker (MCB) designed for supplementary overcurrent protection in industrial control equipment and electrical systems. As part of the ABB ST200M series, it combines a 63 A rated current with a sensitive Z tripping characteristic and compliance with UL 1077 for supplementary protectors.

The ST201M-Z63 provides thermal-magnetic protection against overload and short-circuit conditions. Its Z characteristic offers sensitive magnetic tripping at relatively low multiples of rated current, making it suitable for circuits where rapid response to overcurrent conditions is required, including industrial control, electronic and equipment protection applications.

With a 63 A rated current, single protected pole and 15 kA short-circuit breaking capacity, the ST201M-Z63 provides robust supplementary protection in a compact modular format. Its DIN-rail construction enables straightforward integration into industrial control panels, machinery and OEM electrical assemblies.

Key Advantages

• Compact single-pole supplementary circuit protection for industrial equipment.
• 63 A rated current for higher-current equipment and control circuits.
• Z tripping characteristic for sensitive magnetic response to overcurrent conditions.
• 15 kA short-circuit breaking capacity for robust fault protection.
• Designed as a UL 1077 supplementary protector.
• Modular DIN-rail construction simplifies installation in industrial control panels.

Key Features

• ABB ST200M miniature circuit breaker series.
• 63 A rated current.
• 1-pole configuration.
• Z tripping characteristic.
• 15 kA breaking capacity.
• Thermal-magnetic overload and short-circuit protection.
• UL 1077 supplementary protector classification.
• Compact modular format for space-efficient panel installation.
• DIN-rail mounting for straightforward integration.
• Suitable for industrial circuits requiring sensitive overcurrent protection.

Reliable Protection for Sensitive Electrical Circuits

Miniature circuit breakers such as the ABB ST201M-Z63 automatically disconnect electrical circuits when overload or short-circuit conditions exceed their designed operating limits. Thermal protection responds to sustained overloads, while the magnetic mechanism provides rapid interruption when significant fault currents occur.

The Z tripping characteristic makes the ST201M-Z63 particularly useful for circuits where sensitive magnetic fault protection is required. Combined with the ST200M series' compact modular construction and UL 1077 supplementary protector classification, it provides dependable protection for industrial control systems, electrical equipment and OEM machinery.

Typical Applications

• Industrial electrical and electronic equipment.
• Electrical control panels and automation cabinets.
• Supplementary protection of sensitive electrical loads.
• Industrial control and automation systems.
• OEM machinery and electrical assemblies.
• Higher-current circuits requiring sensitive overcurrent protection.