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2CCS571001R1204 ABB S401M-UCC20 MCB DC 1P Type C 20 A
ABB S401M-UCC20 is a 20 A single-pole Type C miniature circuit breaker with 10 kA breaking capacity at 220 V DC, designed for overload and short-circuit protection in DC and AC SMISSLINE TP electrical systems.
£43.56
Why Choose the ABB S401M-UCC20 Miniature Circuit Breaker?
The ABB S401M-UCC20 is a compact single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit currents in both DC and AC applications. As part of the ABB SMISSLINE TP S400M UC series, it combines reliable circuit protection with the installation flexibility of ABB's pluggable SMISSLINE TP distribution system.
The S400M UC range extends ABB's established SMISSLINE TP circuit-protection platform to direct-current applications while retaining suitability for AC systems. The S401M-UCC20 can be used in single-pole DC circuits up to 220 V DC and integrates directly with compatible SMISSLINE TP socket-base assemblies, supporting efficient installation, replacement and system expansion.
With a rated current of 20 A, a Type C / UC-C tripping characteristic and a short-circuit breaking capacity of 10 kA at 220 V DC, the S401M-UCC20 is suitable for control, automation, auxiliary and distribution circuits with moderate starting currents. It complies with IEC/EN 60947-2 and carries ABB order code 2CCS571001R1204.
Key Advantages
- Designed for DC and AC circuit protection within the ABB SMISSLINE TP system.
- 20 A rated current suitable for control, automation, equipment and distribution circuits.
- Type C / UC-C tripping characteristic suitable for circuits with moderate starting or inrush currents.
- 10 kA breaking capacity at 220 V DC in single-pole DC applications.
- 20 kA breaking capacity at 110 V DC for lower-voltage DC applications.
- Pluggable construction developed specifically for the ABB SMISSLINE TP system.
Key Features
- ABB SMISSLINE TP S400M UC series.
- 20 A rated current.
- Single-pole (1P) configuration.
- Type C / UC-C trip characteristic.
- Suitable for DC and AC applications.
- 220 V DC maximum single-pole application voltage.
- 10 kA breaking capacity at 220 V DC.
- 20 kA breaking capacity at 110 V DC.
- 10 kA breaking capacity at 230 / 400 V AC.
- IP20 degree of protection.
Reliable DC Circuit Protection for SMISSLINE TP Systems
The ABB S400M UC range extends the SMISSLINE TP miniature circuit-breaker platform to both DC and AC applications. The S401M-UCC20 combines thermal overload protection with rapid short-circuit protection in a compact single-pole format, helping protect conductors and connected equipment against damaging overcurrent conditions.
Its Type C / UC-C characteristic is suitable for circuits with moderate starting or inrush currents, making the S401M-UCC20 a practical choice for industrial controls, automation equipment, auxiliary systems and DC distribution circuits. Combined with ABB's SMISSLINE TP plug-in architecture, it provides flexible circuit protection for installations where efficient maintenance and straightforward system expansion are important.
Typical Applications
- DC control and auxiliary circuits.
- Industrial automation and monitoring systems.
- ABB SMISSLINE TP distribution assemblies.
- Control panels and machinery circuits.
- Commercial and industrial DC distribution.
- Circuits with moderate starting or inrush currents.
Technical Specifications
| Series | SMISSLINE TP S400M UC |
|---|---|
| ABB order code | 2CCS571001R1204 |
| EAN | 7612270109852 |
| Product type | Miniature circuit breaker (MCB) |
| Application | DC and AC circuit protection |
| Rated current | 20 A |
| Number of poles | 1P |
| Tripping characteristic | Type C / UC-C |
| Maximum DC voltage, single-pole application | 220 V DC |
| Breaking capacity at 220 V DC, 1P | 10 kA |
| Breaking capacity at 110 V DC, 1P | 20 kA |
| Breaking capacity at 230 / 400 V AC | 10 kA |
| Protection rating | IP20 |
| Electrical endurance | 10,000 cycles |
| Connection capacity | 0.75–35 mm² |
| Operating temperature | -25 to +60 °C |
| Mounting type | Plug-in SMISSLINE TP system |
| Standard | IEC/EN 60947-2 |
| Module width | 18 mm |
| Dimensions (W × H × D) | 18 × 91 × 75 mm |
| Weight | approx. 110 g |
Frequently Asked Questions
What is the ABB S401M-UCC20 used for?
The ABB S401M-UCC20 provides overload and short-circuit protection for DC and AC circuits, including control, automation, auxiliary and distribution applications within compatible ABB SMISSLINE TP systems.
What is the current rating of the S401M-UCC20?
The ABB S401M-UCC20 has a rated current of 20 A.
What does the Type C / UC-C characteristic mean?
The Type C / UC-C tripping characteristic is suitable for circuits with moderate starting or inrush currents, making it appropriate for many industrial control, automation and equipment loads.
Can the ABB S401M-UCC20 be used on DC circuits?
Yes. The S401M-UCC20 belongs to ABB's S400M UC range for DC and AC applications and can be used in single-pole DC applications up to 220 V DC, with a breaking capacity of 10 kA at 220 V DC.
How is the S401M-UCC20 installed?
The breaker is designed as a pluggable device for the ABB SMISSLINE TP system, allowing direct integration into compatible SMISSLINE socket-base distribution assemblies.
Trusted ABB Circuit Protection
ABB SMISSLINE TP S400M UC miniature circuit breakers combine flexible DC and AC circuit protection with a compact plug-in architecture for commercial, industrial and automation electrical systems.
