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2CDS271334R0985 ABB ST201M-B0.5 Miniature Circuit Breaker 15kA 1P B 0.5A UL1077
ABB ST201M-B0.5 is a 0.5 A single-pole B-characteristic miniature circuit breaker designed for UL 1077 supplementary overcurrent and short-circuit protection of low-current industrial control and automation circuits.
£20.72
Why Choose the ABB ST201M-B0.5 Miniature Circuit Breaker?
The ABB ST201M-B0.5 is a compact and reliable single-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection for low-current industrial electrical, control and automation circuits. As part of the robust ABB ST200M miniature circuit breaker series, it combines a B tripping characteristic with a rated current of 0.5 A for dependable protection of sensitive low-current equipment.
Designed for use within industrial control panels, appliances and electrical equipment, the ST201M-B0.5 provides thermal and magnetic tripping mechanisms for overload and short-circuit protection. Its B characteristic provides a sensitive instantaneous trip response, making it particularly suitable for circuits with low normal inrush currents, including control, instrumentation, resistive and auxiliary circuits.
With a 1-pole configuration, 0.5 A rated current and 15 kA short-circuit breaking capacity under applicable IEC conditions, the ST201M-B0.5 delivers robust protection in a compact DIN rail format. The ST200M range is designed for UL 1077 supplementary protection and incorporates practical features including actual contact position indication and ABB twin terminals for efficient panel installation.
Key Advantages
- Compact single-pole miniature circuit breaker for supplementary circuit protection.
- 0.5 A rated current suitable for sensitive low-current circuits and equipment.
- B tripping characteristic provides responsive protection for loads with low inrush currents.
- 15 kA short-circuit breaking capacity under applicable IEC conditions.
- Designed for UL 1077 supplementary circuit protection within industrial equipment.
- DIN rail construction enables straightforward integration into control panels and electrical enclosures.
Key Features
- ABB ST200M miniature circuit breaker series.
- 0.5 A rated current.
- 1-pole configuration.
- B tripping characteristic.
- 15 kA short-circuit breaking capacity under applicable IEC conditions.
- Thermal tripping mechanism for overload protection.
- Magnetic tripping mechanism for short-circuit protection.
- Designed for UL 1077 supplementary protection.
- Actual contact position indication for clear operating status.
- Compact modular construction for DIN rail installation.
Reliable Supplementary Circuit Protection
Miniature circuit breakers such as the ABB ST201M-B0.5 protect electrical circuits and connected equipment against excessive current caused by overload and short-circuit conditions. The delayed thermal tripping mechanism provides overload protection while the magnetic tripping mechanism responds rapidly to short-circuit conditions, allowing the breaker to interrupt the affected circuit and be reset after the fault has been safely cleared.
The B tripping characteristic is particularly suitable for circuits where normal operation involves relatively low starting or inrush currents. Combined with its low 0.5 A rating, this makes the ST201M-B0.5 well suited to sensitive control, instrumentation, auxiliary and resistive circuits in industrial machinery and automation equipment.
Typical Applications
- Industrial electrical control panels.
- Machine building and factory automation systems.
- Instrumentation and measurement circuits.
- Low-current control and auxiliary circuits.
- Resistive loads with low inrush currents.
- Industrial appliances and electrical equipment.
- Supplementary protection for automation components.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| Order code | 2CDS271334R0985 | |
| Product type | Miniature circuit breaker / supplementary protector | |
| Product group | UL489 / UL1077 MCB | |
| Rated current | 0.5 A | |
| Number of poles | 1 | |
| Tripping characteristic | B | |
| Short-circuit breaking capacity | 15 kA under applicable IEC conditions | |
| Protection principle | Thermal-magnetic | |
| Standard / approval | UL 1077 supplementary protection | |
| Calibration temperature | 40 °C | |
| Mounting type | DIN rail | |
| Contact indication | Red / green actual contact position indicator |
Frequently Asked Questions
What is the ABB ST201M-B0.5 used for?
The ST201M-B0.5 is a miniature circuit breaker designed to provide supplementary overcurrent and short-circuit protection for low-current electrical circuits in industrial control panels, machinery, appliances and automation equipment.
What is the current rating of the ABB ST201M-B0.5?
The ST201M-B0.5 has a rated current of 0.5 A and uses a single-pole configuration.
What does the B characteristic mean on the ST201M-B0.5?
The B tripping characteristic provides a sensitive instantaneous magnetic trip response and is well suited to circuits with relatively low normal inrush currents, including control, instrumentation and resistive loads.
What is the breaking capacity of the ST201M-B0.5?
The ST201M-B0.5 is specified with a 15 kA short-circuit breaking capacity under applicable IEC conditions.
Where is the ABB ST201M-B0.5 typically installed?
The ST201M-B0.5 is typically DIN rail mounted inside industrial control panels, machinery cabinets, appliances and automation equipment where supplementary protection of sensitive low-current circuits is required.
Trusted ABB Circuit Protection
ABB ST200M miniature circuit breakers provide compact and dependable supplementary circuit protection for industrial control panels, machinery and electrical equipment, combining thermal-magnetic protection, practical installation features and reliable operation.
