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2CCS573001R0401 ABB S403M-D40 40 A 3-Pole Type D Miniature Circuit Breaker
ABB S403M-D40 is a 40 A 3-pole Type D miniature circuit breaker for the SMISSLINE TP plug-in system, providing reliable overload and short-circuit protection with a 10 kA breaking capacity.
£122.02
Why Choose the ABB S403M-D40 Miniature Circuit Breaker?
The ABB S403M-D40 is a high-performance 3-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in three-phase electrical circuits. As part of the ABB S400M / SMISSLINE TP plug-in system, it combines current-limiting circuit protection with convenient plug-in installation for compatible commercial, industrial and critical-power distribution assemblies.
This circuit breaker has a rated current of 40 A and a Type D tripping characteristic, making it particularly suitable for appropriate circuits supplying equipment with elevated starting or inrush currents, such as motors, transformers and other inductive loads. Its delayed thermal tripping mechanism provides overload protection, while an electromechanical tripping mechanism provides rapid protection against short-circuit faults.
With a rated short-circuit breaking capacity of 10 kA at 230/400 V AC, the S403M-D40 provides dependable protection for demanding three-phase electrical installations. Its compact 54 × 91 × 75 mm body, IP20 protection and SMISSLINE TP plug-in construction support efficient panel installation, replacement and maintenance.
Key Advantages
- Reliable 3-pole miniature circuit breaker for three-phase circuit protection.
- 40 A rated current for industrial machinery and distribution circuits.
- Type D tripping characteristic suited to appropriate loads with elevated starting and inrush currents.
- 10 kA short-circuit breaking capacity for dependable fault-current interruption.
- Three protected poles provide coordinated protection for three-phase circuits.
- Designed specifically for the ABB SMISSLINE TP plug-in system.
- Accepts connecting conductors from 0.75–35 mm².
- Plug-in construction helps simplify installation, replacement and maintenance.
Key Features
- ABB S400M / SMISSLINE TP series.
- 40 A rated current.
- 3-pole configuration.
- Type D tripping characteristic.
- 230/400 V AC nominal system voltage.
- 10 kA short-circuit breaking capacity.
- IP20 degree of protection.
- Plug-in SMISSLINE TP mounting for compatible modular distribution systems.
- 0.75–35 mm² conductor connection range.
- Electrical endurance of up to 10,000 operating cycles.
- Operating temperature range of -25 to +60 °C.
- Compliant with IEC/EN 60898-1.
Reliable Protection for High-Inrush Three-Phase Loads
The ABB S403M-D40 uses complementary thermal and electromechanical tripping mechanisms to protect connected cables, conductors and equipment. The delayed thermal release responds to sustained overload conditions, while the electromechanical release provides rapid disconnection during short-circuit faults, helping limit damaging thermal and electrical stresses within the installation.
Its Type D characteristic is particularly suitable for appropriate equipment with elevated starting currents, where tolerance of short-duration inrush helps prevent unnecessary instantaneous tripping during normal energisation. Combined with ABB's SMISSLINE TP plug-in architecture, the S403M-D40 provides dependable three-phase protection for machinery, transformers and other suitable inductive loads.
Typical Applications
- Industrial three-phase distribution circuits.
- Motor circuits with elevated starting currents.
- Transformer-fed circuits.
- Inductive electrical loads.
- Machine control panels and automation equipment.
- Industrial production and processing machinery.
- Commercial and industrial distribution systems.
- Critical-power electrical installations.
- OEM machinery and electrical control equipment.
- ABB SMISSLINE TP modular distribution assemblies.
Technical Specifications
| Product group | SMISSLINE Plug-in System |
|---|---|
| Range | SMISSLINE TP |
| Series | S400M |
| ABB order code | 2CCS573001R0401 |
| EAN | 7612270103119 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 40 A |
| Number of poles | 3 |
| Tripping characteristic | Type D |
| Nominal voltage | 230/400 V AC |
| Short-circuit breaking capacity | 10 kA |
| Protection rating | IP20 |
| Tripping mechanisms | Delayed thermal and electromechanical |
| Mounting type | Plug-in SMISSLINE TP |
| Module width | 3 modules |
| Connection conductor cross-section | 0.75–35 mm² |
| Electrical endurance | 10,000 cycles |
| Operating ambient temperature | -25 to +60 °C |
| Width | 54 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Dimensions (W × H × D) | 54 × 91 × 75 mm |
| Weight | approx. 322 g |
| Standard | IEC/EN 60898-1 |
Frequently Asked Questions
What is the ABB S403M-D40 used for?
The ABB S403M-D40 is a 3-pole miniature circuit breaker designed to protect three-phase electrical circuits against overload and short-circuit currents, particularly in applications with equipment that can produce elevated starting or inrush currents.
What is the current rating of the S403M-D40?
The S403M-D40 has a rated current of 40 A, making it suitable for appropriately designed three-phase machinery, equipment and distribution circuits.
What does the Type D tripping characteristic mean?
The Type D tripping characteristic is intended for appropriate circuits with comparatively high starting or inrush currents, such as certain motors, transformers and inductive loads, helping avoid unwanted instantaneous tripping during normal equipment start-up.
What is the breaking capacity of the ABB S403M-D40?
The S403M-D40 has a rated short-circuit breaking capacity of 10 kA at 230/400 V AC, providing dependable fault-current interruption for appropriately designed three-phase electrical installations.
How is the ABB S403M-D40 installed?
The S403M-D40 is designed for plug-in installation within compatible ABB SMISSLINE TP distribution systems, allowing direct integration with the socket system and supporting efficient installation, replacement and maintenance.
Trusted ABB Circuit Protection
ABB SMISSLINE TP S400M miniature circuit breakers combine dependable overload and short-circuit protection with a flexible plug-in distribution platform, providing an efficient protection solution for industrial machinery, high-inrush loads and three-phase electrical distribution systems.
