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2CDS272334R0015 ABB ST202M-B1 Miniature Circuit Breaker 2P B 1A UL 1077
ABB ST202M-B1 is a 1 A two-pole B-characteristic miniature circuit breaker designed for UL 1077 supplementary overcurrent and short-circuit protection in industrial control and machine-building applications.
£47.42
Why Choose the ABB ST202M-B1 Miniature Circuit Breaker?
The ABB ST202M-B1 is a compact and reliable two-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection in industrial, commercial and machine-building electrical systems. As part of the ABB System pro M compact ST200M series, it combines a B tripping characteristic with a low 1 A rated current for dependable protection of sensitive control and auxiliary circuits.
Designed for applications requiring UL 1077 supplementary protection, the ST202M-B1 provides simultaneous two-pole circuit protection in a compact DIN rail format. Its B tripping characteristic is suited to circuits with relatively low inrush currents, including control equipment, auxiliary supplies and resistive loads.
With a rated current of 1 A, a two-pole configuration and an ultimate short-circuit breaking capacity of 15 kA at 400 V AC and 125 V DC according to IEC/EN 60947-2, the ST202M-B1 provides robust protection for industrial control and distribution applications. It is designed in accordance with standards including UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
Key Advantages
- Compact two-pole miniature circuit breaker for supplementary circuit protection.
- 1 A rated current suitable for low-current control and auxiliary circuits.
- B tripping characteristic suited to circuits with relatively low inrush currents.
- 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC according to IEC/EN 60947-2.
- Designed for UL 1077 supplementary protection applications.
- DIN rail format enables straightforward integration into industrial control panels and distribution equipment.
Key Features
- ABB System pro M compact ST200M series.
- 1 A rated current.
- 2-pole configuration.
- B tripping characteristic.
- 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC.
- 400 V AC rated operational voltage according to IEC 60947-2.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Suitable for AC electrical circuits.
- DIN rail mounting for compact electrical panel installation.
Reliable Supplementary Protection for Industrial Electrical Systems
Miniature circuit breakers such as the ABB ST202M-B1 automatically interrupt a circuit when excessive current caused by an overload or short circuit is detected. This helps protect conductors and connected electrical equipment while providing a convenient resettable protection device for industrial control and auxiliary circuits.
The ST200M series is designed for demanding industrial and machine-building applications where compact supplementary protection and recognised international standards are required. The B characteristic provides responsive protection for circuits with comparatively low inrush currents, making the ST202M-B1 particularly suitable for control equipment, auxiliary circuits and other low-current electrical loads.
Typical Applications
- Industrial machinery and electrical control panels.
- Automation and process-control equipment.
- Low-current control and auxiliary circuits.
- Power supplies and electrical control equipment.
- Commercial and industrial electrical systems.
- OEM machinery requiring UL 1077 supplementary protection.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | System pro M compact ST200M | |
| ABB order code | 2CDS272334R0015 | |
| EAN | 4016779021043 | |
| Product type | Miniature circuit breaker (MCB) | |
| Product main type | ST200M | |
| Product group | UL 489 / UL 1077 MCB | |
| Number of poles | 2 | |
| Rated current | 1 A | |
| Tripping characteristic | B | |
| Rated operational voltage | 400 V AC according to IEC 60947-2 | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated ultimate short-circuit breaking capacity | 15 kA at 400 V AC / 125 V DC | |
| UL 1077 interrupting rating | 10 kA at 240 V AC, 480Y/277 V AC and 125 V DC | |
| Input voltage type | AC | |
| Standards | UL 1077, CSA 22.2 No. 235, IEC/EN 60947-2 | |
| Mounting type | DIN rail | |
| Weight | approx. 0.230 kg |
Frequently Asked Questions
What is the ABB ST202M-B1 used for?
The ST202M-B1 is a two-pole miniature circuit breaker designed for supplementary overcurrent and short-circuit protection in industrial control, auxiliary and machine-building electrical circuits.
What is the current rating of the ST202M-B1?
The ABB ST202M-B1 has a rated current of 1 A.
What does the B characteristic mean?
The B tripping characteristic is suited to electrical circuits with relatively low starting and inrush currents, including many control, auxiliary and resistive loads.
What is the short-circuit breaking capacity of the ABB ST202M-B1?
The ST202M-B1 has an ultimate short-circuit breaking capacity of 15 kA at 400 V AC and 125 V DC according to IEC/EN 60947-2, while its UL 1077 interrupting rating is 10 kA at specified UL voltages.
Which standards does the ST202M-B1 meet?
The ST202M-B1 is designed in accordance with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
Trusted ABB Circuit Protection
ABB System pro M compact miniature circuit breakers provide dependable supplementary circuit protection for industrial control, automation and machine-building applications, combining compact installation with recognised international electrical standards.
