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2CDS271334R0557 ABB ST201M-K40 Miniature Circuit Breaker 1P K 40A
ABB ST201M-K40 is a 40 A single-pole K-characteristic miniature circuit breaker for supplementary overcurrent and short-circuit protection in industrial electrical and automation applications.
£29.16
Why Choose the ABB ST201M-K40 Miniature Circuit Breaker?
The ABB ST201M-K40 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 K tripping characteristic and a rated current of 40 A.
Designed for demanding control and distribution applications, the ST201M-K40 provides dependable protection for circuits and equipment where higher starting currents may occur. Its K characteristic makes it particularly suitable for inductive loads such as motors, transformers, control equipment and industrial machinery while maintaining effective protection against overloads and short circuits.
The ST201M-K40 is a 1-pole, 40 A device compliant with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2. It provides a rated ultimate short-circuit breaking capacity of 15 kA at 230 V AC according to IEC/EN 60947-2, making it a robust solution for supplementary circuit protection in industrial control panels, machinery and electrical distribution equipment.
Key Advantages
- Compact single-pole miniature circuit breaker for industrial circuit protection.
- 40 A rated current for higher-current control and distribution circuits.
- K tripping characteristic suitable for circuits with elevated inrush currents.
- Rated ultimate short-circuit breaking capacity of 15 kA at 230 V AC according to IEC/EN 60947-2.
- Compliant with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
- 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.
- K tripping characteristic.
- 15 kA rated ultimate short-circuit breaking capacity at 230 V AC.
- 11.2 kA rated service short-circuit breaking capacity at 230 V AC.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Double-clamp terminal design for secure electrical connections.
- Compact modular construction for DIN rail installation.
Reliable Supplementary Circuit Protection
Miniature circuit breakers such as the ABB ST201M-K40 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 K tripping characteristic is designed for applications where normal operation can involve relatively high starting or inrush currents. This makes the ST201M-K40 particularly useful in industrial installations containing motors, transformers, machinery and other inductive electrical loads while providing dependable circuit protection within its specified ratings.
Typical Applications
- Industrial electrical control panels.
- Machine building and factory automation systems.
- Motor and inductive-load circuits.
- Transformer and control power circuits.
- Industrial machinery and production equipment.
- Electrical distribution and supplementary circuit protection.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| Order code | 2CDS271334R0557 | |
| EAN | 4016779018425 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 40 A | |
| Number of poles | 1 | |
| Tripping characteristic | K | |
| Rated operational voltage | 230 V AC according to IEC 60947-2 | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated ultimate short-circuit breaking capacity (Icu) | 15 kA at 230 V AC | |
| Rated service short-circuit breaking capacity (Ics) | 11.2 kA at 230 V AC | |
| Rated conditional short-circuit current | 15 kA at 230 V / 400 V | |
| Input voltage type | AC | |
| Terminal type | Double clamp | |
| 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-K40 used for?
The ST201M-K40 is a miniature circuit breaker designed to provide supplementary 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-K40?
The ST201M-K40 has a rated current of 40 A and uses a single-pole configuration.
What does the K characteristic mean on the ST201M-K40?
The K tripping characteristic is intended for circuits that can experience higher starting or inrush currents, making it well suited to applications involving motors, transformers and other inductive loads.
What is the breaking capacity of the ST201M-K40?
The ST201M-K40 has a rated ultimate short-circuit breaking capacity of 15 kA at 230 V AC according to IEC/EN 60947-2.
Which standards does the ABB ST201M-K40 comply with?
The ST201M-K40 is specified to UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2, supporting its use as a supplementary circuit protection device in suitable industrial electrical applications.
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.
