Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CCS571001R1328 ABB S401M-UCZ32 MCB DC 1P Type Z 32 A
ABB S401M-UCZ32 is a 32 A single-pole Type Z miniature circuit breaker with 20 kA Icu at 220 V DC, designed for overload and short-circuit protection in DC and AC SMISSLINE TP electrical systems.
£55.46
Why Choose the ABB S401M-UCZ32 Miniature Circuit Breaker?
The ABB S401M-UCZ32 is a compact single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit currents in DC and AC applications. As part of the ABB SMISSLINE TP S400M UC series, it combines dependable circuit protection with the installation flexibility of ABB's pluggable SMISSLINE TP distribution system.
The S400M UC range extends ABB's SMISSLINE TP circuit-protection platform to direct-current systems. The S401M-UCZ32 supports single-pole DC applications 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 32 A, a Type Z / UC-Z tripping characteristic and a rated ultimate short-circuit breaking capacity of 20 kA Icu at 220 V DC, the S401M-UCZ32 provides sensitive overcurrent protection for demanding DC applications. It complies with IEC/EN 60947-2 and carries ABB order code 2CCS571001R1328.
Key Advantages
- Designed for reliable DC and AC circuit protection within the ABB SMISSLINE TP system.
- 32 A rated current for distribution, control and equipment circuits.
- Type Z / UC-Z tripping characteristic for sensitive circuits requiring rapid magnetic response to overcurrent.
- 20 kA Icu ultimate short-circuit breaking capacity at 220 V DC.
- Single-pole configuration suitable for DC applications up to 220 V DC.
- Pluggable construction developed specifically for the ABB SMISSLINE TP system.
Key Features
- ABB SMISSLINE TP S400M UC series.
- 32 A rated current.
- Single-pole (1P) configuration.
- Type Z / UC-Z trip characteristic.
- Suitable for DC and AC applications.
- 220 V DC maximum single-pole application voltage.
- 20 kA Icu at 220 V DC.
- 10 kA Ics at 220 V DC.
- 440 V rated insulation voltage with 4 kV impulse withstand voltage.
- Compact 18 mm single-module construction.
Reliable DC Circuit Protection for SMISSLINE TP Systems
The ABB S400M UC range extends the SMISSLINE TP miniature circuit-breaker platform to DC and AC applications. The S401M-UCZ32 combines thermal overload protection with rapid short-circuit protection in a compact single-pole format, helping protect conductors and connected equipment against potentially damaging overcurrent conditions.
Its Type Z / UC-Z characteristic is intended for sensitive circuits where the magnetic release needs to respond at a comparatively low multiple of rated current. Together with its 20 kA Icu capacity at 220 V DC and the SMISSLINE TP plug-in architecture, the S401M-UCZ32 provides a robust protection solution for DC distribution, industrial control and automation applications.
Typical Applications
- DC distribution and auxiliary circuits.
- Industrial automation and control systems.
- ABB SMISSLINE TP distribution assemblies.
- Sensitive electrical and electronic equipment circuits.
- Commercial and industrial DC distribution.
- Critical-power and control-panel applications.
Technical Specifications
| Series | SMISSLINE TP S400M UC |
|---|---|
| ABB order code | 2CCS571001R1328 |
| Product type | Miniature circuit breaker (MCB) |
| Application | DC and AC circuit protection |
| Rated current | 32 A |
| Number of poles | 1P |
| Tripping characteristic | Type Z / UC-Z |
| Maximum DC voltage, single-pole application | 220 V DC |
| Rated ultimate short-circuit breaking capacity (Icu) at 220 V DC | 20 kA |
| Rated service short-circuit breaking capacity (Ics) at 220 V DC | 10 kA |
| Rated short-circuit capacity at 230 V AC | 10 kA |
| Rated short-circuit capacity at 400 V AC | 10 kA |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Frequency | 50–60 Hz |
| Energy limiting class | 3 |
| Protection rating | IP20 |
| Electrical endurance | 10,000 cycles |
| Mechanical endurance | 10,000 cycles |
| Rigid conductor capacity | 0.75–35 mm² |
| Flexible conductor capacity | 0.75–25 mm² |
| Operating temperature | -25 to +60 °C |
| Mounting type | Plug-in SMISSLINE TP system |
| Standard | IEC/EN 60947-2 |
| Module width | 1 module / 18 mm |
| Dimensions (W × H × D) | 18 × 91 × 75 mm |
| Weight | approx. 145 g |
Frequently Asked Questions
What is the ABB S401M-UCZ32 used for?
The ABB S401M-UCZ32 provides overload and short-circuit protection for DC and AC circuits, including distribution, control, automation and equipment applications within compatible ABB SMISSLINE TP systems.
What is the current rating of the S401M-UCZ32?
The ABB S401M-UCZ32 has a rated current of 32 A.
What does the Type Z / UC-Z characteristic mean?
The Type Z / UC-Z tripping characteristic provides sensitive magnetic overcurrent protection and is suited to circuits where rapid response at comparatively low multiples of rated current is required.
What is the DC breaking capacity of the ABB S401M-UCZ32?
The S401M-UCZ32 provides a rated ultimate short-circuit breaking capacity of 20 kA Icu at 220 V DC and a rated service short-circuit breaking capacity of 10 kA Ics at 220 V DC.
How is the S401M-UCZ32 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 dependable DC and AC circuit protection with a compact plug-in architecture for commercial, industrial and critical-power electrical systems.
