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ABB S204M-K40UC MCB – 4P – K Curve – 40A – 10kA – AC/DC
ABB S204M-K40UC miniature circuit breaker, a 40 A four-pole K characteristic AC/DC MCB with a 10 kA rated breaking capacity for DIN-rail electrical protection.
£468.30
Why Choose the ABB S204M-K40UC Miniature Circuit Breaker?
The ABB S204M-K40UC is a four-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection for AC and DC electrical installations. As part of the ABB System pro M compact S200M series, it combines flexible universal-current operation with compact DIN-rail installation for industrial and commercial electrical systems.
The S200M UC range is designed for applications requiring circuit protection across both alternating and direct current systems. Its K tripping characteristic is suited to circuits with higher inrush currents, helping accommodate demanding loads such as motors, transformers and other industrial equipment with elevated starting currents.
With a 40 A rated current, four-pole configuration and 10 kA rated breaking capacity, the S204M-K40UC provides dependable circuit protection in a compact modular format for control panels, distribution boards and electrical installations.
Key Advantages
- Compact four-pole miniature circuit breaker for AC/DC applications.
- 40 A rated current for reliable protection of appropriately rated circuits.
- K tripping characteristic for circuits with higher inrush currents.
- 10 kA rated breaking capacity for effective short-circuit protection.
- Suitable for both AC and DC electrical systems.
- Practical DIN-rail mounting for control panels and distribution boards.
- Suitable for motor-control, transformer and industrial load applications where higher starting currents occur.
Key Features
- ABB System pro M compact S200M series.
- 4-pole configuration.
- 40 A rated current.
- K tripping characteristic.
- 10 kA rated breaking capacity.
- UC version suitable for AC and DC circuits.
- Compact modular construction for electrical distribution and control applications.
- Clear contact position indication for straightforward circuit status identification.
- DIN-rail mounting for fast and secure installation.
- Compatible with ABB System pro M compact accessory solutions.
Reliable AC and DC Circuit Protection
The ABB S204M-K40UC provides dependable protection for alternating and direct current circuits while retaining the compact modular design of the System pro M compact S200M range. The UC configuration enables use across AC and DC electrical systems within the specified ratings.
Its K tripping characteristic is particularly suitable for circuits where higher inrush currents can occur during equipment starting. This makes the S204M-K40UC appropriate for motor-control circuits, transformers and other industrial loads, while the 10 kA breaking capacity provides effective short-circuit interruption within the specified application conditions.
Typical Applications
- Industrial control panels and electrical distribution boards.
- AC and DC control circuits.
- Motor-control circuits with higher starting currents.
- Transformer protection and control applications.
- Industrial automation and machinery circuits.
- Electrical installations with loads that generate higher inrush currents.
- Auxiliary and general industrial electrical circuits.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Poles | 4-pole | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Product type | Miniature circuit breaker | |
| Rated current | 40 A | |
| Number of poles | 4 | |
| Tripping characteristic | K | |
| Rated AC voltage | 400 V AC | |
| Rated DC voltage | 440 V DC | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20; IP40 in enclosure with cover | |
| Mounting type | DIN-rail mounting | |
| Mounting rail | 35 mm DIN rail according to EN 60715 | |
| Mounting position | Any | |
| Dimensions (W × H × D) | approx. 70 × 85 × 69 mm | |
| Mechanical endurance | 20,000 operations | |
| Ambient temperature | -25 to +55 °C | |
| Storage temperature | -40 to +70 °C | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S204M-K40UC | |
| Order code | 2CDS274061R0557 | |
| Rated breaking capacity | 10 kA | |
| Supply | AC/DC |
Frequently Asked Questions
What is the ABB S204M-K40UC used for?
The S204M-K40UC is a four-pole miniature circuit breaker used to protect AC and DC electrical circuits against overloads and short circuits, particularly in applications with higher inrush currents.
What is the rated current of the S204M-K40UC?
The ABB S204M-K40UC has a 40 A rated current.
What is the breaking capacity of this circuit breaker?
The S204M-K40UC has a 10 kA rated breaking capacity under the applicable specified conditions.
What is the K tripping characteristic?
The K characteristic is designed for circuits with higher inrush currents, making the S204M-K40UC suitable for applications such as motors, transformers and other industrial loads with elevated starting currents.
Can the S204M-K40UC be used with AC and DC?
Yes. The S204M-K40UC is the UC version and is designed for both AC and DC applications, with rated voltages of 400 V AC and 440 V DC.
How is the S204M-K40UC mounted?
The circuit breaker is designed for 35 mm DIN-rail mounting according to EN 60715, making it suitable for electrical distribution boards and industrial control panels.
Trusted for Industrial Circuit Protection
ABB System pro M compact S200M miniature circuit breakers provide flexible AC/DC circuit protection, high breaking capacity and practical modular installation for industrial electrical systems.
