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2CCS571103R8517 ABB S401M-K25NP MCB 10kA 1P+NP Type K 25A
ABB S401M-K25NP is a 25 A 1P+NP Type K miniature circuit breaker with protected neutral, 10 kA rated breaking capacity and SMISSLINE TP plug-in mounting for reliable overload and short-circuit protection.
£67.95
Why Choose the ABB S401M-K25NP Miniature Circuit Breaker?
The ABB S401M-K25NP is a pluggable 1P+NP miniature circuit breaker (MCB) with protected neutral designed to protect electrical circuits against overload and short-circuit currents. Part of the ABB S400M-K SMISSLINE TP series, it combines reliable circuit protection with the flexibility of ABB's modular plug-in power distribution system.
This circuit breaker has a rated current of 25 A, a Type K tripping characteristic and a rated short-circuit breaking capacity of 10 kA. According to IEC/EN 60947-2, the S401M-K25NP has a rated ultimate short-circuit breaking capacity of 15 kA, providing robust fault protection for appropriately designed professional electrical installations.
The S401M-K25NP uses a 1P+NP protected-neutral configuration and is rated for 240 V AC. Its compact 2-module construction and SMISSLINE plug-in mounting support efficient installation, replacement and expansion in compatible ABB distribution assemblies.
Key Advantages
- 25 A rated current with Type K tripping characteristic.
- 1P+NP configuration with protected neutral.
- 10 kA rated short-circuit breaking capacity.
- 15 kA ultimate short-circuit breaking capacity according to IEC/EN 60947-2.
- Type K characteristic suited to appropriately designed circuits with elevated starting currents.
- IP20 protection rating for the device.
- Plug-in construction for integration with the ABB SMISSLINE TP system.
Key Features
- ABB S400M-K SMISSLINE TP miniature circuit breaker.
- 25 A rated current.
- Type K characteristic.
- 1P+NP protected-neutral configuration.
- 240 V AC rated voltage.
- 10 kA short-circuit breaking capacity.
- 15 kA Icu according to IEC/EN 60947-2.
- 0.75–35 mm² conductor connection range.
- 10,000-cycle electrical endurance.
- 2-module SMISSLINE plug-in format.
Reliable Type K Protection for Circuits with Starting Currents
The ABB S401M-K25NP protects electrical conductors and connected equipment by automatically interrupting excessive currents caused by overload or short-circuit conditions. Its current-limiting circuit-breaker design provides dependable fault protection while the protected-neutral configuration provides overcurrent protection for the neutral conductor as well as the phase conductor.
The Type K characteristic is particularly useful for appropriately engineered circuits where elevated short-duration starting currents may occur, including certain motor, transformer and inductive-load applications. Combined with ABB's SMISSLINE TP plug-in architecture, the S401M-K25NP provides a compact and maintainable protection solution for professional electrical distribution.
Typical Applications
- Industrial electrical distribution systems.
- Machine and automation control panels.
- Motor circuits where Type K protection is appropriate.
- Transformer and inductive-load circuits.
- Control and auxiliary power distribution.
- Circuits subject to elevated short-duration starting currents.
- ABB SMISSLINE TP plug-in distribution assemblies.
Technical Specifications
| Product group | SMISSLINE Plug-in System |
|---|---|
| Series | S400M-K / SMISSLINE TP |
| ABB order code | 2CCS571103R8517 |
| EAN | 7612270103737 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Tripping characteristic | Type K |
| Configuration | 1P+NP with protected neutral |
| Rated voltage | 240 V AC |
| Rated short-circuit breaking capacity | 10 kA |
| Rated ultimate short-circuit breaking capacity (Icu) | 15 kA at 240 V AC |
| Standard | IEC/EN 60947-2 |
| Protection rating | IP20 |
| Conductor connection range | 0.75–35 mm² |
| Electrical endurance | 10,000 cycles |
| Operating temperature | −25 to +55 °C |
| Number of modules | 2 |
| Mounting type | SMISSLINE plug-in |
| Height | 91 mm |
| Width | 36 mm |
| Depth | 75 mm |
| Weight | approx. 221 g |
| ABB packaging unit | 5 pieces |
Frequently Asked Questions
What is the ABB S401M-K25NP used for?
The S401M-K25NP is a 25 A miniature circuit breaker designed to protect electrical circuits against overload and short-circuit currents, particularly where a Type K tripping characteristic is required.
What is the rated current of the S401M-K25NP?
The ABB S401M-K25NP has a rated current of 25 A.
What does the Type K characteristic mean?
The Type K characteristic is suited to appropriately designed circuits where elevated short-duration starting currents can occur, including certain motor, transformer and other inductive-load applications.
What is the breaking capacity of the S401M-K25NP?
The S401M-K25NP has a rated short-circuit breaking capacity of 10 kA and a rated ultimate short-circuit breaking capacity of 15 kA at 240 V AC according to IEC/EN 60947-2.
Does the S401M-K25NP have a protected neutral?
Yes. The S401M-K25NP uses a 1P+NP configuration with protected neutral, providing overcurrent protection for both the phase and neutral conductors.
Trusted ABB Protection for Professional Distribution Systems
ABB SMISSLINE TP S400M-K miniature circuit breakers combine robust Type K circuit protection with a protected-neutral configuration and flexible plug-in architecture for professional low-voltage power distribution.
