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2CDS272334R0984 ABB ST202M-C0.5 Miniature Circuit Breaker 2P C 0.5 A UL1077
ABB ST202M-C0.5 is a 0.5 A two-pole C-characteristic miniature circuit breaker with 15 kA breaking capacity designed for UL 1077 supplementary protection of low-current industrial control and electrical sub-circuits.
£54.54
Why Choose the ABB ST202M-C0.5 Miniature Circuit Breaker?
The ABB ST202M-C0.5 is a compact and reliable 2-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection for industrial control equipment and electrical sub-circuits. As part of the ABB ST200M series, it combines a low 0.5 A rated current with C-characteristic thermal-magnetic tripping for dependable protection of low-current circuits.
The ST202M-C0.5 is particularly suited to control, instrumentation and automation circuits where a low current rating is required. Its C tripping characteristic provides a practical balance between short-circuit sensitivity and tolerance of moderate transient currents, supporting reliable operation across a wide range of industrial control applications.
With a specified 15 kA short-circuit breaking capacity and UL 1077 supplementary protector classification, the ST202M-C0.5 provides robust protection in a compact DIN-rail format. Its two-pole construction enables simultaneous protection and switching of two conductors for straightforward integration into machinery and electrical control panels.
Key Advantages
- Compact 2-pole miniature circuit breaker for supplementary circuit protection.
- 0.5 A rated current suited to low-current control and instrumentation circuits.
- C tripping characteristic for versatile industrial circuit protection.
- 15 kA short-circuit breaking capacity for robust fault protection.
- Designed for UL 1077 supplementary protection applications.
- DIN-rail modular construction simplifies installation in electrical control panels.
Key Features
- ABB ST200M miniature circuit breaker series.
- 2-pole configuration.
- 0.5 A rated current.
- C characteristic thermal-magnetic tripping.
- 15 kA short-circuit breaking capacity.
- UL 1077 supplementary protector design.
- Automatic overload and short-circuit interruption.
- Resettable operation eliminates the routine replacement associated with fuses.
- Compact modular construction for DIN-rail installation.
Reliable Protection for Low-Current Control Circuits
Miniature circuit breakers such as the ABB ST202M-C0.5 automatically disconnect a circuit when excessive current caused by an overload or short circuit is detected. Thermal protection responds to sustained overload conditions, while magnetic operation provides rapid interruption during severe fault currents, helping protect downstream equipment and conductors.
The low 0.5 A current rating makes this model particularly useful for auxiliary, control and instrumentation circuits where protection must be appropriately matched to low-current equipment. Its compact two-pole DIN-rail construction supports efficient integration into industrial control cabinets and automation assemblies.
Typical Applications
- Industrial control and automation panels.
- Low-current control circuits.
- Instrumentation and monitoring equipment.
- PLC and automation auxiliary circuits.
- Electrical sub-circuits requiring supplementary overcurrent protection.
- OEM machinery and control cabinet installations.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| ABB order code | 2CDS272334R0984 | |
| Product type | Miniature circuit breaker / supplementary protector | |
| Number of poles | 2P | |
| Number of protected poles | 2 | |
| Rated current | 0.5 A | |
| Tripping characteristic | C | |
| Short-circuit breaking capacity | 15 kA | |
| Protection principle | Thermal-magnetic | |
| Standard | UL 1077 | |
| Mounting type | DIN rail | |
| Modular width | 2 modules |
Frequently Asked Questions
What is the ABB ST202M-C0.5 used for?
The ST202M-C0.5 is a 2-pole supplementary miniature circuit breaker designed to protect low-current industrial control, instrumentation and electrical sub-circuits against overload and short-circuit currents.
What is the rated current of the ABB ST202M-C0.5?
The ST202M-C0.5 has a rated current of 0.5 A.
What does the C characteristic mean?
The C tripping characteristic provides thermal-magnetic protection with tolerance for moderate short-duration inrush currents, making it suitable for a broad range of control and industrial electrical loads.
What is the breaking capacity of the ST202M-C0.5?
The ST202M-C0.5 has a specified short-circuit breaking capacity of 15 kA.
Is the ABB ST202M-C0.5 a UL 1077 supplementary protector?
Yes. The ST202M-C0.5 is designed for UL 1077 supplementary overcurrent protection in applications where the required branch-circuit protection is provided separately.
Trusted Circuit Protection from ABB
ABB ST200M miniature circuit breakers provide dependable supplementary protection for industrial control systems, machinery and electrical equipment, combining compact DIN-rail installation with established ABB circuit-protection technology.
