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2CCS863001R0557 ABB S803S-K40 3-Pole Type K 40 A 50 kA High-Performance MCB
ABB S803S-K40 is a 40 A three-pole Type K high-performance miniature circuit breaker with 50 kA short-circuit breaking capacity for demanding industrial circuits, motors and other inductive loads.
£201.52
Why Choose the ABB S803S-K40 High-Performance MCB?
The ABB S803S-K40 is a high-performance three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in demanding industrial power distribution systems. As part of the ABB S800S high-performance circuit breaker series, it combines a 40 A rated current, Type K tripping characteristic and a high 50 kA short-circuit breaking capacity.
The Type K characteristic is particularly suited to circuits supplying motors, transformers and other inductive loads that can produce elevated starting or inrush currents. Thermal and electromagnetic tripping mechanisms provide dependable protection against sustained overload conditions and high-current short-circuit faults while accommodating the transient currents associated with normal equipment start-up.
Its three-pole construction enables coordinated protection and switching of three-phase circuits. The S803S-K40 is designed for professional industrial distribution, machinery and control-panel applications where robust construction, high fault-current capability and reliable protection of higher-inrush loads are required.
Key Advantages
- High-performance three-pole miniature circuit breaker for demanding industrial installations.
- 40 A rated current for three-phase equipment and distribution circuits.
- Type K tripping characteristic suited to motors, transformers and other inductive loads.
- High 50 kA short-circuit breaking capacity.
- Thermal protection helps safeguard cables and equipment against sustained overloads.
- Electromagnetic protection provides rapid interruption of severe short-circuit faults.
- Three protected poles provide coordinated protection for three-phase circuits.
- Part of ABB's established S800S high-performance MCB range.
Key Features
- ABB S800S high-performance MCB series.
- 3-pole configuration for three-phase circuit protection.
- 40 A rated current.
- Type K tripping characteristic.
- 50 kA rated ultimate short-circuit breaking capacity.
- Thermal and electromagnetic overcurrent protection.
- 690 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- ON / OFF / TRIP contact-position indication.
- Interchangeable cage-terminal S800 design.
- DIN-rail mounting for industrial distribution and control assemblies.
Reliable Protection for Motors and High-Inrush Industrial Loads
High-performance miniature circuit breakers such as the ABB S803S-K40 automatically disconnect electrical circuits when current exceeds permitted operating limits. The thermal element responds to sustained overload conditions, while the electromagnetic mechanism rapidly interrupts high-current short circuits to help protect conductors, equipment and electrical distribution infrastructure.
The Type K characteristic allows the S803S-K40 to accommodate elevated transient starting currents, making it particularly useful for motors, transformers and other inductive equipment. Combined with the S800S platform's 50 kA breaking capacity and three-pole construction, it provides dependable protection for demanding three-phase industrial systems.
Typical Applications
- Industrial three-phase electrical distribution systems.
- Motor circuits and motor-driven machinery.
- Transformer and other inductive-load circuits.
- Machinery and automation control panels.
- Manufacturing and production equipment.
- Installations requiring high short-circuit breaking capacity.
Technical Specifications
| Series | S800S |
|---|---|
| ABB order code | 2CCS863001R0557 |
| Product type | High-performance miniature circuit breaker (MCB) |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 40 A |
| Tripping characteristic | Type K |
| Rated ultimate short-circuit breaking capacity (Icu) | 50 kA |
| Rated insulation voltage (Ui) | 690 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Frequency | 50/60 Hz |
| Tripping mechanism | Thermal / electromagnetic |
| Contact position indication | ON / OFF / TRIP |
| Mounting type | DIN rail |
| Terminal type | Interchangeable cage terminal |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S803S-K40 used for?
The S803S-K40 is a three-pole high-performance miniature circuit breaker designed to protect industrial three-phase electrical circuits against overloads and short circuits, particularly where loads can produce elevated starting currents.
What is the rated current of the ABB S803S-K40?
The S803S-K40 has a rated current of 40 A.
What breaking capacity does the S803S-K40 provide?
The S803S-K40 provides a rated ultimate short-circuit breaking capacity of 50 kA, making it suitable for demanding installations with high prospective fault currents.
What does the Type K characteristic mean?
The Type K tripping characteristic is suited to loads with elevated starting or inrush currents, making it particularly useful for motors, transformers and other inductive equipment.
How is the ABB S803S-K40 installed?
The S803S-K40 is designed for DIN-rail mounting in suitable industrial control panels, distribution boards and electrical enclosures.
Trusted High-Performance Protection from ABB
ABB S800S high-performance miniature circuit breakers provide dependable overload and short-circuit protection for demanding industrial electrical systems where high breaking capacity, robust construction and reliable protection of three-phase equipment are required.
