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2CCS572001R1258 ABB S402M-UCZ25 Miniature Circuit Breaker 25 A 2P Type Z 10 kA
ABB S402M-UCZ25 is a 25 A 2-pole Type Z AC/DC miniature circuit breaker with 10 kA breaking capacity, designed for overload and short-circuit protection in SMISSLINE TP plug-in distribution systems.
£124.50
Why Choose the ABB S402M-UCZ25 DC Miniature Circuit Breaker?
The ABB S402M-UCZ25 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in DC and AC electrical distribution systems. As part of the ABB S400M UC / SMISSLINE TP series, it combines a 25 A rated current, Type Z tripping characteristic and 10 kA breaking capacity with convenient plug-in installation.
Designed for circuits requiring sensitive overcurrent protection, the S402M-UCZ25 uses a UC-Z characteristic suited to applications where rapid magnetic response is required at relatively low multiples of rated current. Its two protected poles and SMISSLINE TP plug-in construction support efficient integration into compatible modular distribution assemblies.
With a 25 A rated current, 2-pole configuration and support for two-pole DC applications up to 440 V DC, the S402M-UCZ25 is suitable for industrial control, automation and power distribution circuits. Its compact 36 mm width and robust construction make it well suited to commercial, industrial and critical-power installations.
Key Advantages
- Reliable 2-pole miniature circuit breaker for overload and short-circuit protection.
- 25 A rated current for control and distribution circuits.
- Type Z / UC-Z tripping characteristic for sensitive electrical loads.
- Suitable for AC and DC circuit protection.
- Two-pole DC operation up to 440 V DC.
- 10 kA breaking capacity for dependable fault protection.
- Plug-in construction designed specifically for the ABB SMISSLINE TP system.
Key Features
- ABB S400M UC / SMISSLINE TP series.
- 25 A rated current.
- 2 protected poles.
- Type Z / UC-Z tripping characteristic.
- AC/DC voltage type.
- 440 V DC maximum two-pole application voltage.
- 10 kA breaking capacity.
- 4 kV rated impulse withstand voltage.
- Energy limiting class 3.
- Compact two-module SMISSLINE plug-in construction.
Reliable Protection for AC and DC Circuits
Miniature circuit breakers such as the ABB S402M-UCZ25 protect electrical conductors and connected equipment by automatically interrupting current when overload or short-circuit conditions occur. Correctly specified switching capability is particularly important in DC systems because direct current behaves differently from alternating current when a fault current is interrupted.
The ABB S400M UC range extends the established SMISSLINE TP platform with circuit breakers developed for flexible AC and DC applications. The S402M-UCZ25 combines sensitive UC-Z protection, two protected poles and high short-circuit performance with the installation advantages of ABB's modular plug-in distribution system.
Typical Applications
- Industrial DC distribution systems.
- Automation and machine control circuits.
- DC control and auxiliary power circuits.
- Sensitive electrical and electronic equipment protection.
- Commercial and industrial power distribution.
- Critical-power distribution systems.
- ABB SMISSLINE TP modular distribution assemblies.
Technical Specifications
| Series | S400M UC / SMISSLINE TP |
|---|---|
| ABB order code | 2CCS572001R1258 |
| EAN | 7612270110377 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Tripping characteristic | Type Z / UC-Z |
| Voltage type | AC/DC |
| Maximum DC voltage, two-pole connection | 440 V DC |
| Breaking capacity | 10 kA |
| Frequency | 50–60 Hz |
| Rated impulse withstand voltage | 4 kV |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 2 |
| Operating temperature | -25 to +60 °C |
| Mounting type | SMISSLINE TP plug-in system |
| Conductor connection range, stranded | 0.75–25 mm² |
| Conductor connection range, solid | 0.75–35 mm² |
| Width | 36 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Width in modules | 2 |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S402M-UCZ25 used for?
The S402M-UCZ25 is a 2-pole miniature circuit breaker designed to protect compatible AC and DC electrical circuits against overloads and short circuits.
What is the current rating of the S402M-UCZ25?
The ABB S402M-UCZ25 has a rated current of 25 A.
What tripping characteristic does the S402M-UCZ25 use?
The breaker uses a Type Z / UC-Z tripping characteristic, making it suitable for sensitive circuits requiring rapid response to overcurrent conditions.
What DC voltage can the ABB S402M-UCZ25 be used with?
The S402M-UCZ25 supports two-pole applications up to 440 V DC when connected in accordance with ABB's specified arrangement.
How is the ABB S402M-UCZ25 installed?
The breaker is designed exclusively for plug-in installation within the ABB SMISSLINE TP system, enabling efficient integration into compatible modular electrical distribution assemblies.
Trusted ABB AC/DC Circuit Protection
ABB S400M UC miniature circuit breakers provide dependable overload and short-circuit protection for AC and DC applications while combining specialised tripping characteristics with the modular advantages of the SMISSLINE TP plug-in distribution system.
