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2CDS272334R0041 ABB ST202M-D4 Miniature Circuit Breaker 2P D 4A 15kA UL1077
ABB ST202M-D4 is a 4 A two-pole D-characteristic thermal-magnetic miniature circuit breaker with a 15 kA interrupting rating and UL 1077 classification for supplementary overcurrent protection.
£61.65
Why Choose the ABB ST202M-D4 Miniature Circuit Breaker?
The ABB ST202M-D4 is a compact two-pole miniature circuit breaker (MCB) designed to provide dependable supplementary overcurrent protection for industrial control equipment, machinery and automation circuits. As part of the ABB ST200M / System pro M compact range, it combines a 4 A rated current, D tripping characteristic and UL 1077 classification in a modular format.
The ST202M-D4 uses thermal-magnetic protection to respond to sustained overloads and short-circuit faults. Its D characteristic is suited to circuits with substantial momentary inrush currents, making it useful for transformers, power supplies, solenoids and other equipment where normal energisation can produce a high current peak.
With a two-pole configuration, 4 A rated current and 15 kA interrupting rating, the ST202M-D4 provides robust supplementary protection for suitable industrial circuits. Its compact DIN rail construction allows straightforward integration into control cabinets, machinery panels and automation assemblies.
Key Advantages
- Compact two-pole miniature circuit breaker for supplementary overcurrent protection.
- 4 A rated current suitable for industrial control and auxiliary circuits.
- D tripping characteristic suited to equipment with high momentary inrush currents.
- 15 kA interrupting rating.
- Thermal-magnetic operation provides overload and short-circuit protection.
- UL 1077 classification for supplementary protection applications.
- DIN rail format simplifies installation in industrial control assemblies.
Key Features
- ABB ST200M / System pro M compact series.
- 2-pole configuration.
- 4 A rated current.
- D tripping characteristic.
- 15 kA interrupting rating.
- Thermal-magnetic overcurrent protection.
- Designed for UL 1077 supplementary protection.
- Suitable for circuits with elevated energisation and inrush currents.
- Compact modular construction for industrial control panels.
Reliable Supplementary Protection for High-Inrush Loads
The ABB ST202M-D4 automatically disconnects protected circuits when excessive current occurs because of an overload or short circuit. Its thermal element responds to sustained overcurrent conditions, while the magnetic mechanism provides rapid operation when severe fault currents occur.
The D characteristic accommodates the higher momentary currents associated with energising transformers, power supplies, solenoids and similar equipment. Combined with its 4 A rating and two-pole configuration, this makes the ST202M-D4 a practical supplementary protection device for suitable industrial control and automation circuits.
Typical Applications
- Industrial automation and control panels.
- Transformer circuits.
- Power supply circuits.
- Solenoids and high-inrush control loads.
- Machine control and auxiliary circuits.
- OEM machinery and manufacturing equipment.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M / System pro M compact | |
| ABB order code | 2CDS272334R0041 | |
| Product type | Miniature circuit breaker (MCB) / supplementary protector | |
| Number of poles | 2P | |
| Rated current | 4 A | |
| Tripping characteristic | D | |
| Protection principle | Thermal-magnetic | |
| Interrupting rating | 15 kA | |
| UL classification | UL 1077 | |
| Mounting | DIN rail |
Frequently Asked Questions
What is the ABB ST202M-D4 used for?
The ST202M-D4 provides supplementary overload and short-circuit protection for suitable industrial control and automation circuits, particularly those with elevated inrush currents.
What is the rated current of the ST202M-D4?
The ABB ST202M-D4 has a rated current of 4 A and uses a two-pole configuration.
What does the D characteristic mean?
The D tripping characteristic is intended for circuits that can experience substantial momentary inrush currents, such as transformers, power supplies and other inductive equipment.
What is the interrupting rating of the ST202M-D4?
The ABB ST202M-D4 has a specified 15 kA interrupting rating.
Is the ABB ST202M-D4 a UL 1077 supplementary protector?
Yes. The ST202M-D4 is classified for UL 1077 supplementary overcurrent protection applications.
Trusted ABB Circuit Protection
ABB System pro M compact circuit protection devices are widely used in industrial machinery, automation panels and electrical control systems where dependable overcurrent protection, compact installation and recognised protection standards are required.
