2CDS271334R0971 ABB ST201M-D1.6 Miniature Circuit Breaker 15kA 1P D 1.6A UL1077

Why Choose the ABB ST201M-D1.6 Miniature Circuit Breaker?

The ABB ST201M-D1.6 is a compact and reliable single-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection for industrial control equipment, machinery and electrical systems. As part of the ABB ST200M series, it combines thermal-magnetic protection with a D tripping characteristic and compliance with UL 1077 requirements.

Rated at 1.6 A, the ST201M-D1.6 uses a D tripping characteristic, making it particularly suitable for circuits containing loads with comparatively high starting or inrush currents. This characteristic helps tolerate normal short-duration inrush while retaining dependable overload and short-circuit protection.

The ST201M-D1.6 is a 1-pole device with ABB order code 2CDS271334R0971. With a 15 kA short-circuit breaking capacity and UL 1077 classification, it provides robust supplementary protection for industrial control and equipment circuits.

Key Advantages

• Compact single-pole miniature circuit breaker for supplementary circuit protection.
• 1.6 A rated current for low-current industrial control and equipment circuits.
• D tripping characteristic suited to loads with elevated starting and inrush currents.
• 15 kA short-circuit breaking capacity for robust fault protection.
• Designed as a UL 1077 supplementary protector.
• Modular DIN-rail format simplifies installation in electrical control panels.

Key Features

• ABB ST200M series miniature circuit breaker.
• 1-pole configuration.
• 1.6 A rated current.
• D-characteristic thermal-magnetic tripping.
• 15 kA short-circuit breaking capacity.
• Designed for UL 1077 supplementary protection.
• Resettable protection against overload and short-circuit conditions.
• Compact DIN-rail mounting for industrial control assemblies.

Reliable Protection for High-Inrush Industrial Loads

Miniature circuit breakers such as the ABB ST201M-D1.6 automatically interrupt current when overload or short-circuit conditions exceed the permitted operating range. Thermal-magnetic operation combines time-dependent overload protection with rapid magnetic response to severe short-circuit faults, helping protect conductors, control equipment and connected components.

The D tripping characteristic provides increased tolerance of short-duration inrush currents compared with more sensitive trip characteristics. This makes the ST201M-D1.6 suitable for low-current industrial circuits supplying inductive or high-inrush loads where nuisance magnetic tripping during normal energisation needs to be minimised.

Typical Applications

• Industrial machinery and automation control panels.
• Low-current circuits with elevated starting or inrush currents.
• Control transformers, solenoids and inductive equipment.
• Supplementary protection of industrial electrical equipment.
• Manufacturing and production machinery.
• OEM electrical and machine control assemblies.