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2CCS573001R0537 ABB S403M-K32 32A 3-Pole Type K Miniature Circuit Breaker
ABB S403M-K32 is a 32 A three-pole Type K SMISSLINE TP miniature circuit breaker providing overload and short-circuit protection for motor, inductive-load and industrial distribution circuits.
£100.57
Why Choose the ABB S403M-K32 Miniature Circuit Breaker?
The ABB S403M-K32 is a current-limiting three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit conditions. Part of the ABB SMISSLINE TP S400M series, it combines dependable circuit protection with a plug-in design developed specifically for compatible SMISSLINE TP distribution systems.
Rated at 32 A with a Type K tripping characteristic, the S403M-K32 is particularly suited to circuits supplying equipment that can produce elevated starting currents. Its characteristic makes it suitable for appropriately engineered motor, transformer, machinery and other inductive-load circuits where normal energisation can create significant transient currents.
The S403M-K32 provides a rated short-circuit capacity of 10 kA and a rated ultimate short-circuit breaking capacity (Icu) of 15 kA at 230 / 400 V AC to IEC/EN 60947-2. Its three-pole plug-in construction enables efficient integration into ABB SMISSLINE TP assemblies for commercial, industrial and critical-power applications.
Key Advantages
- Three-pole miniature circuit breaker for three-phase circuit protection.
- 32 A rated current for appropriately designed equipment and distribution circuits.
- Type K tripping characteristic suited to circuits with elevated starting currents.
- 10 kA rated short-circuit capacity for dependable fault protection.
- 15 kA ultimate short-circuit breaking capacity (Icu) at 230 / 400 V AC to IEC/EN 60947-2.
- Combined thermal overload and electromechanical short-circuit protection.
- Current-limiting class 3 construction helps limit short-circuit fault energy.
- Plug-in installation for integration with the ABB SMISSLINE TP system.
Key Features
- ABB SMISSLINE TP S400M series.
- 32 A rated current.
- 3-pole configuration with three protected poles.
- Type K tripping characteristic.
- 10 kA rated short-circuit capacity.
- 15 kA Icu at 230 / 400 V AC to IEC/EN 60947-2.
- 415 V AC rated voltage.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 50–60 Hz operating frequency.
- IP20 protection rating.
- 10,000-cycle electrical endurance.
Reliable Protection for Motor and Inductive Loads
The ABB S403M-K32 protects electrical conductors and circuits by automatically interrupting excessive current. Its delayed thermal tripping mechanism responds to sustained overload conditions, while the electromechanical tripping mechanism provides rapid disconnection when a short-circuit fault occurs.
The Type K characteristic is particularly useful where equipment can draw elevated but legitimate current during starting or energisation. This makes the S403M-K32 suitable for appropriately engineered motor, transformer and other inductive-load circuits, while the SMISSLINE TP plug-in architecture supports efficient installation within modular ABB distribution systems.
Typical Applications
- Three-phase motor circuits.
- Transformers and inductive electrical loads.
- Industrial machinery and automation equipment.
- Production and manufacturing systems.
- Electrical control panels and distribution assemblies.
- Commercial and industrial three-phase distribution.
- ABB SMISSLINE TP distribution systems.
Technical Specifications
| Series | SMISSLINE TP S400M |
|---|---|
| ABB order code | 2CCS573001R0537 |
| EAN | 7612270103270 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 32 A |
| Tripping characteristic | Type K |
| Rated voltage | 415 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50–60 Hz |
| Rated short-circuit capacity | 10 kA |
| Rated ultimate short-circuit breaking capacity (Icu) | 15 kA at 230 / 400 V AC |
| Current-limiting class | 3 |
| Protection rating | IP20 |
| Conductor cross-section | 0.75–35 mm² |
| Electrical endurance | 10,000 cycles |
| Operating temperature | −25 to +60 °C |
| Overload protection | Delayed thermal tripping mechanism |
| Short-circuit protection | Electromechanical tripping mechanism |
| Installation system | ABB SMISSLINE TP plug-in system |
| Standard | IEC/EN 60947-2 |
| Dimensions (W × H × D) | 54 × 91 × 75 mm |
| Weight | approx. 322 g |
Frequently Asked Questions
What is the ABB S403M-K32 used for?
The ABB S403M-K32 is a three-pole miniature circuit breaker designed to protect electrical circuits against overload and short-circuit currents, with a Type K characteristic particularly suited to appropriately designed motor, transformer and other inductive-load circuits.
What is the current rating of the S403M-K32?
The S403M-K32 has a rated current of 32 A.
What does the Type K tripping characteristic mean?
The Type K characteristic is intended for circuits where connected equipment can produce elevated starting currents, making it useful for appropriately selected motors, transformers, machinery and other inductive loads.
What is the breaking capacity of the ABB S403M-K32?
The S403M-K32 has a rated short-circuit capacity of 10 kA and a rated ultimate short-circuit breaking capacity (Icu) of 15 kA at 230 / 400 V AC to IEC/EN 60947-2.
Is the S403M-K32 designed for the ABB SMISSLINE TP system?
Yes. The S403M-K32 is a plug-in miniature circuit breaker designed specifically for integration with compatible ABB SMISSLINE TP distribution assemblies.
Trusted Circuit Protection from ABB
ABB SMISSLINE TP miniature circuit breakers combine dependable overload and short-circuit protection with a modular plug-in architecture designed for efficient commercial, industrial and critical-power distribution.
