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2CDS271334R0558 ABB ST201M-Z40 Miniature Circuit Breaker 15kA 1P Z 40A UL1077
ABB ST201M-Z40 is a 40 A single-pole Z-characteristic miniature circuit breaker and UL 1077 supplementary protector for sensitive industrial electrical, control and automation circuits.
£31.39
Why Choose the ABB ST201M-Z40 Miniature Circuit Breaker?
The ABB ST201M-Z40 is a high-performance single-pole miniature circuit breaker (MCB) designed to provide reliable supplementary overcurrent and short-circuit protection in industrial electrical and automation systems. As part of the proven ABB ST200M miniature circuit breaker series, it combines a compact DIN rail format with a sensitive Z tripping characteristic and a rated current of 40 A.
Designed for demanding control and distribution applications, the ST201M-Z40 provides dependable protection for circuits and equipment requiring rapid magnetic tripping. Its Z characteristic is particularly suited to sensitive electrical and electronic loads where low fault currents need to be detected quickly, making it a practical choice for industrial control equipment, electronic circuits and automation systems.
The ST201M-Z40 is a 1-pole, 40 A supplementary protector specified to UL 1077 and CSA 22.2 No. 235. The ST200M series also provides a rated ultimate short-circuit breaking capacity of up to 15 kA at 230 V AC according to IEC/EN 60947-2, delivering robust protection in compact industrial control and distribution installations.
Key Advantages
- Compact single-pole miniature circuit breaker for industrial circuit protection.
- 40 A rated current for higher-current control and distribution circuits.
- Z tripping characteristic for sensitive circuits requiring rapid response to overcurrent conditions.
- Rated ultimate short-circuit breaking capacity of up to 15 kA at 230 V AC according to IEC/EN 60947-2.
- Designed as a UL 1077 supplementary protector for suitable industrial equipment applications.
- Compact DIN rail format enables straightforward integration into industrial control panels and distribution assemblies.
Key Features
- ABB ST200M miniature circuit breaker series.
- 40 A rated current.
- 1-pole configuration.
- Z tripping characteristic.
- 15 kA rated ultimate short-circuit breaking capacity at 230 V AC according to IEC/EN 60947-2.
- Designed for supplementary protection under UL 1077.
- Suitable for sensitive electrical and electronic circuits.
- Compact modular construction for DIN rail installation.
Reliable Supplementary Circuit Protection
Miniature circuit breakers such as the ABB ST201M-Z40 protect electrical circuits and connected equipment against excessive current caused by overload and short-circuit conditions. The breaker automatically interrupts the circuit when its defined trip conditions are reached and can subsequently be reset without replacing a fuse.
The Z tripping characteristic provides sensitive magnetic protection and is intended for applications where relatively low overcurrents need to initiate rapid disconnection. This makes the ST201M-Z40 particularly useful for protecting sensitive electronic equipment, control circuits, automation components and other loads that require a lower instantaneous tripping threshold than conventional higher-inrush applications.
Typical Applications
- Industrial electrical control panels.
- Machine building and factory automation systems.
- Sensitive electronic equipment and circuits.
- Industrial control and instrumentation circuits.
- Automation and process control equipment.
- Electrical distribution and supplementary circuit protection.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| Order code | 2CDS271334R0558 | |
| Product type | Miniature circuit breaker / supplementary protector | |
| Product group | UL489 / UL1077 MCB | |
| Rated current | 40 A | |
| Number of poles | 1 | |
| Tripping characteristic | Z | |
| Rated ultimate short-circuit breaking capacity (Icu) | 15 kA at 230 V AC according to IEC/EN 60947-2 | |
| Standards | UL 1077, CSA 22.2 No. 235, IEC/EN 60947-2 | |
| Mounting type | DIN rail | |
| Weight | approx. 0.115 kg |
Frequently Asked Questions
What is the ABB ST201M-Z40 used for?
The ST201M-Z40 is a miniature circuit breaker and supplementary protector designed to provide overcurrent and short-circuit protection for electrical circuits and equipment in industrial control, machinery and automation applications.
What is the current rating of the ABB ST201M-Z40?
The ST201M-Z40 has a rated current of 40 A and uses a single-pole configuration.
What does the Z characteristic mean on the ST201M-Z40?
The Z tripping characteristic provides sensitive magnetic protection for circuits requiring rapid response to relatively low overcurrents, making it suitable for sensitive electronic, control and automation equipment.
What is the breaking capacity of the ST201M-Z40?
The ST200M series provides a rated ultimate short-circuit breaking capacity of 15 kA at 230 V AC according to IEC/EN 60947-2.
Which standards apply to the ABB ST201M-Z40?
The ST201M-Z40 is designed as a supplementary protector under UL 1077 and CSA 22.2 No. 235, with the ST200M series also specified to IEC/EN 60947-2.
Trusted ABB Circuit Protection
ABB ST200M miniature circuit breakers provide compact and dependable supplementary circuit protection for industrial control panels, machinery and automation equipment, combining robust electrical performance with convenient modular installation.
