Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CDS273334R0321 ABB ST203M-D32 MCB 15kA 3P D 32A UL1077
ABB ST203M-D32 is a 32 A three-pole D-characteristic miniature circuit breaker with a 15 kA short-circuit breaking capacity designed for supplementary protection of industrial electrical equipment and high-inrush circuits.
£97.59
Why Choose the ABB ST203M-D32 Miniature Circuit Breaker?
The ABB ST203M-D32 is a robust three-pole miniature circuit breaker (MCB) designed to provide dependable supplementary overcurrent and short-circuit protection for industrial equipment, machinery and electrical control systems. As part of the ABB ST200M miniature circuit breaker series, it combines reliable circuit protection with a compact modular format for professional DIN-rail installations.
Featuring a D tripping characteristic, the ST203M-D32 is particularly suited to circuits containing loads that can produce relatively high short-duration starting or inrush currents. This makes it a practical choice for industrial machinery, transformers, motors, solenoids and other inductive equipment where normal energisation can create substantial transient current.
With a rated current of 32 A, a three-pole configuration and a short-circuit breaking capacity of 15 kA, the ST203M-D32 provides robust supplementary protection for demanding three-pole equipment circuits. ABB order code 2CDS273334R0321 identifies this specific 32 A D-characteristic model within ABB's UL 1077 miniature circuit breaker range.
Key Advantages
- Robust three-pole miniature circuit breaker for industrial equipment and machinery.
- 32 A rated current for higher-current equipment and control applications.
- 15 kA short-circuit breaking capacity for dependable fault protection.
- D tripping characteristic suited to loads with relatively high short-duration inrush currents.
- Designed for UL 1077 supplementary circuit protection applications.
- DIN-rail format supports straightforward integration into industrial electrical panels and equipment.
Key Features
- ABB ST200M miniature circuit breaker series.
- 32 A rated current.
- 3-pole configuration.
- D tripping characteristic.
- 15 kA short-circuit breaking capacity.
- Thermal-magnetic circuit protection.
- Designed for UL 1077 supplementary protection.
- Compact modular construction for DIN-rail installation.
Reliable Circuit Protection for High-Inrush Loads
Miniature circuit breakers such as the ABB ST203M-D32 automatically interrupt electrical current when an overload or short-circuit condition occurs. This provides resettable circuit protection for conductors and connected equipment while supporting convenient fault recovery and maintenance in industrial installations.
The D-characteristic response makes the ST203M-D32 particularly suitable for equipment that can draw substantial short-duration current during energisation or start-up. Combined with its 32 A rating and three-pole construction, it is well suited to supplementary protection of industrial machinery, transformers, motors, solenoids and other inductive loads.
Typical Applications
- Industrial machinery and automation equipment.
- Electrical control panels and cabinets.
- Three-pole industrial equipment circuits.
- Transformers and inductive loads.
- Motor and solenoid circuits with high starting currents.
- OEM machinery requiring UL 1077 supplementary protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| Order code | 2CDS273334R0321 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 32 A | |
| Number of poles | 3 | |
| Number of protected poles | 3 | |
| Tripping characteristic | D | |
| Short-circuit breaking capacity | 15 kA | |
| Protection principle | Thermal-magnetic | |
| Standard / product group | UL 489 / UL 1077 MCB | |
| Application standard | UL 1077 | |
| Mounting type | DIN rail | |
| Modular width | 3 modules |
Frequently Asked Questions
What is the ABB ST203M-D32 used for?
The ST203M-D32 is a three-pole miniature circuit breaker designed to provide supplementary overload and short-circuit protection for industrial equipment, machinery and circuits that can experience relatively high starting or inrush currents.
What is the rated current of the ST203M-D32?
The ABB ST203M-D32 has a rated current of 32 A.
What does the D characteristic mean?
The D tripping characteristic is suited to loads with relatively high short-duration inrush or starting currents, making it useful for equipment such as transformers, motors, solenoids and other inductive loads.
What is the breaking capacity of the ST203M-D32?
The ST203M-D32 has a 15 kA short-circuit breaking capacity, providing robust fault protection for suitable industrial equipment and supplementary circuit-protection applications.
What is the ABB order code for the ST203M-D32?
The ABB order code for the ST203M-D32 32 A three-pole D-characteristic MCB is 2CDS273334R0321.
Trusted Circuit Protection from ABB
ABB ST200M miniature circuit breakers provide compact and dependable supplementary circuit protection for industrial machinery, electrical panels and automation equipment, combining reliable protection performance with a modular DIN-rail design.
