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2CDS273334R0547 ABB ST203M-K35 Miniature Circuit Breaker 15 kA 3P K 35 A UL1077
ABB ST203M-K35 is a 35 A three-pole K-curve miniature circuit breaker with 15 kA breaking capacity, designed for reliable supplementary overload and short-circuit protection in UL 1077 applications.
£97.59
Why Choose the ABB ST203M-K35 Miniature Circuit Breaker?
The ABB ST203M-K35 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable supplementary overload and short-circuit protection for electrical circuits and equipment. As part of the robust ABB ST200M series, it combines a K tripping characteristic, 35 A rated current and three poles in a compact modular format.
Designed for supplementary protection applications in accordance with UL 1077, the ST203M-K35 is particularly suited to industrial machinery, motor-related circuits and inductive loads. Its K characteristic accommodates elevated starting and inrush currents while maintaining dependable overload protection, making it useful for equipment where normal energisation can produce short-duration current peaks.
With a rated current of 35 A, a 15 kA short-circuit breaking capacity and three-pole configuration, the ST203M-K35 provides dependable protection for demanding multi-pole circuits. Its compact modular construction supports straightforward DIN-rail installation inside electrical control panels, machinery cabinets and industrial automation systems.
Key Advantages
- Reliable three-pole miniature circuit breaker for supplementary circuit protection.
- 35 A rated current for industrial and control circuits.
- K tripping characteristic suitable for motor-related and inductive loads with elevated inrush currents.
- 15 kA short-circuit breaking capacity for robust fault protection.
- Designed for supplementary protection in accordance with UL 1077.
- Compact modular construction for straightforward DIN-rail installation.
Key Features
- ABB ST200M miniature circuit breaker series.
- 35 A rated current.
- Three-pole configuration.
- K tripping characteristic.
- 15 kA breaking capacity.
- Thermal-magnetic overload and short-circuit protection.
- Suitable for circuits subject to elevated starting and inrush currents.
- Compact DIN-rail mounting design for electrical control panels.
Reliable Circuit Protection for Motor and Inductive Loads
Miniature circuit breakers such as the ABB ST203M-K35 automatically disconnect a circuit when excessive current occurs due to an overload or short circuit. Thermal and magnetic tripping mechanisms provide protection against sustained overloads and fault currents, helping safeguard wiring, control equipment and connected loads.
The K tripping characteristic is particularly useful for circuits supplying inductive equipment that can draw elevated current during start-up. This makes the ST203M-K35 well suited to industrial machinery, motor-related circuits and similar loads where tolerance of normal inrush current is required alongside dependable overcurrent protection.
Typical Applications
- Industrial machinery and automation equipment.
- Motor-related control and auxiliary circuits.
- Inductive loads with elevated starting currents.
- Three-phase industrial control circuits.
- Electrical control panels and machinery cabinets.
- Supplementary overcurrent protection applications requiring UL 1077 compliance.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| ABB order code | 2CDS273334R0547 | |
| Product type | Miniature circuit breaker (MCB) / supplementary protector | |
| Rated current | 35 A | |
| Number of poles | 3 | |
| Tripping characteristic | K | |
| Short-circuit breaking capacity | 15 kA | |
| Protection principle | Thermal-magnetic | |
| Standard | UL 1077 | |
| Mounting type | DIN-rail mounting |
Frequently Asked Questions
What is the ABB ST203M-K35 used for?
The ST203M-K35 is a three-pole miniature circuit breaker designed to provide supplementary overload and short-circuit protection for industrial circuits, including motor-related and inductive loads.
What is the rated current of the ST203M-K35?
The ABB ST203M-K35 has a rated current of 35 A.
What does the K tripping characteristic mean?
The K tripping characteristic is suited to circuits with elevated starting or inrush currents, making it particularly useful for motor-related, inductive and industrial machinery applications.
What is the breaking capacity of the ABB ST203M-K35?
The ST203M-K35 has a specified short-circuit breaking capacity of 15 kA, providing robust fault protection for its intended electrical circuits.
Is the ABB ST203M-K35 a UL 1077 supplementary protector?
Yes. The ST203M-K35 is designed for UL 1077 supplementary protection applications within electrical equipment and control systems.
Trusted by Electrical and Automation Professionals
ABB ST200M miniature circuit breakers provide compact and dependable supplementary circuit protection for industrial machinery, motor-related circuits, control panels and automation systems where reliable overcurrent protection and straightforward DIN-rail integration are required.
