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2CCS572001R1504 ABB S402M-UCC50 MCB AC/DC 2P Type C 50A
ABB S402M-UCC50 is a 50 A Type C 2-pole AC/DC miniature circuit breaker designed for reliable overload and short-circuit protection in SMISSLINE TP plug-in electrical distribution systems.
£146.89
Why Choose the ABB S402M-UCC50 AC/DC Miniature Circuit Breaker?
The ABB S402M-UCC50 is a 2-pole miniature circuit breaker (MCB) engineered for dependable overload and short-circuit protection in AC and DC electrical systems. Part of the ABB S400M-UC range for the SMISSLINE TP plug-in system, it combines a 50 A rated current, Type C tripping characteristic and flexible AC/DC capability for industrial and commercial distribution applications.
The S402M-UCC50 uses thermal and electromagnetic releases to protect connected conductors and equipment against sustained overloads and short-circuit faults. Its Type C characteristic accommodates moderate starting and inrush currents, making it suitable for appropriately designed power, control and auxiliary circuits.
For DC systems, ABB specifies the two-pole S402M-UCC50 for applications up to 440 V DC when connected according to the manufacturer's prescribed connection arrangement. The breaker provides 10 kA breaking capacity at 440 V DC and 25 kA at 220 V DC, while its compact 36 × 91 × 75 mm construction supports efficient integration into compatible SMISSLINE TP assemblies.
Key Advantages
- 50 A rated current for protection of appropriately rated power and distribution circuits.
- 2-pole configuration for coordinated AC and DC circuit protection.
- Type C tripping characteristic suitable for circuits with moderate starting or inrush currents.
- 10 kA breaking capacity at 440 V DC in the specified two-pole arrangement.
- 25 kA breaking capacity at 220 V DC using two poles.
- Purpose-designed for the ABB SMISSLINE TP plug-in system.
Key Features
- ABB S400M-UC series miniature circuit breaker.
- 50 A nominal current rating.
- Type C / UCC tripping characteristic.
- 2 protected poles.
- Suitable for AC and DC applications.
- Two-pole operation up to 440 V DC.
- 10 kA breaking capacity at 440 V DC.
- 25 kA breaking capacity at 220 V DC.
- IP20 degree of protection.
- SMISSLINE TP plug-in mounting for compatible distribution systems.
- Compliant with IEC/EN 60947-2.
Reliable Protection for AC and DC Circuits
The ABB S402M-UCC50 protects electrical circuits against excessive current resulting from overloads and short circuits. Its thermal release responds to sustained overload conditions, while the electromagnetic release provides rapid interruption when short-circuit current reaches the instantaneous tripping range.
The S400M-UC platform extends ABB's SMISSLINE TP system with flexible protection for both alternating-current and direct-current installations. With its 50 A Type C characteristic and two-pole DC capability up to 440 V DC, the S402M-UCC50 provides a practical protective solution for demanding industrial, commercial and machine-building distribution circuits.
Typical Applications
- ABB SMISSLINE TP electrical distribution systems.
- Industrial AC and DC power circuits.
- Automation and machine-building electrical systems.
- DC auxiliary power distribution.
- Commercial and industrial switchboards.
- Circuits requiring 50 A Type C overcurrent protection.
Technical Specifications
| Series | S400M-UC / SMISSLINE TP |
|---|---|
| ABB order code | 2CCS572001R1504 |
| EAN | 7612270110063 |
| Product type | AC/DC miniature circuit breaker (MCB) |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Rated current | 50 A |
| Tripping characteristic | Type C / UCC |
| Rated voltage | 400 V |
| Maximum two-pole DC voltage | 440 V DC |
| Breaking capacity at 440 V DC, 2-pole | 10 kA |
| Breaking capacity at 220 V DC, 2-pole | 25 kA |
| AC breaking capacity at 230/400 V | 10 kA |
| Rated insulation voltage (Ui) | 440 V |
| Energy limiting class | 3 |
| Protection rating | IP20 |
| Power loss | 8.4 W |
| Solid conductor connection range | 0.75–35 mm² |
| Stranded conductor connection range | 0.75–25 mm² |
| Mounting type | SMISSLINE TP plug-in |
| Width | 2 modules / 36 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Net weight | approx. 221 g |
| Operating ambient temperature | −25 to +55 °C |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S402M-UCC50 used for?
The ABB S402M-UCC50 is a 2-pole miniature circuit breaker designed to provide overload and short-circuit protection for appropriately rated AC and DC circuits in compatible ABB SMISSLINE TP systems.
What is the current rating of the S402M-UCC50?
The S402M-UCC50 has a rated current of 50 A.
What does the Type C characteristic mean?
The Type C tripping characteristic accommodates moderate starting and inrush currents, making it suitable for appropriately designed commercial, industrial and machine-building circuits.
Can the ABB S402M-UCC50 be used on DC circuits?
Yes. The S402M-UCC50 supports two-pole DC applications up to 440 V DC when connected according to ABB's specified DC connection arrangement.
What is the DC breaking capacity of the S402M-UCC50?
With both poles used, ABB specifies a breaking capacity of 25 kA at 220 V DC and 10 kA at 440 V DC.
Trusted ABB AC/DC Circuit Protection
ABB S400M-UC protective devices combine flexible AC/DC circuit protection, robust short-circuit performance and SMISSLINE TP plug-in technology for dependable commercial and industrial electrical distribution.
