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2CDS272334R0528 ABB ST202M-Z30 Miniature Circuit Breaker 2P Z 30 A UL1077
ABB ST202M-Z30 is a 30 A two-pole Z-characteristic miniature circuit breaker and UL 1077 supplementary protector designed for sensitive industrial equipment and electrical sub-circuit protection.
£69.18
Why Choose the ABB ST202M-Z30 Miniature Circuit Breaker?
The ABB ST202M-Z30 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection for industrial control equipment and electrical sub-circuits. As part of the ABB ST200M series, it combines compact DIN-rail installation with sensitive Z-characteristic thermal-magnetic tripping and compliance with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2 requirements.
With a rated current of 30 A, the ST202M-Z30 is particularly suited to circuits where sensitive magnetic operation is required. Its Z tripping characteristic responds to comparatively low multiples of rated current, making it suitable for selected electronic equipment, control circuits and other loads requiring rapid response to overcurrent conditions.
The ST202M-Z30 provides an ultimate short-circuit breaking capacity of 15 kA at 400 V AC according to IEC 60947-2. For UL 1077 supplementary protection applications, the ST200M platform provides a 10 kA interrupting rating at specified UL voltages. Its two-pole construction enables simultaneous switching and protection of two conductors for dependable integration into industrial machinery and automation panels.
Key Advantages
- Compact 2-pole miniature circuit breaker for supplementary overcurrent protection.
- 30 A rated current for industrial equipment and control circuits.
- Z tripping characteristic provides sensitive magnetic protection for appropriate loads.
- 15 kA ultimate short-circuit breaking capacity at 400 V AC according to IEC 60947-2.
- 10 kA interrupting rating for UL 1077 supplementary protection at specified UL voltages.
- Compact DIN-rail modular construction simplifies integration into electrical control panels.
Key Features
- ABB ST200M miniature circuit breaker series.
- 2-pole configuration.
- 30 A rated current.
- Z characteristic thermal-magnetic tripping.
- 400 V AC rated operational voltage according to IEC 60947-2.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 15 kA ultimate breaking capacity at 400 V AC.
- Trip-free snap-action mechanism for reliable switching and fault operation.
- Compact modular profile for integration with DIN-rail control equipment.
Sensitive Supplementary Protection for Industrial Circuits
Miniature circuit breakers such as the ABB ST202M-Z30 automatically disconnect a circuit when excessive current caused by an overload or short circuit is detected. This helps protect downstream equipment and conductors while allowing straightforward manual resetting after the cause of the electrical fault has been identified and corrected.
The Z characteristic provides sensitive instantaneous magnetic operation, making the ST202M-Z30 particularly appropriate for selected electronic equipment, control circuits and other applications where rapid fault-current response is important. Its compact modular construction allows efficient integration into DIN-rail control cabinets, machinery and industrial automation assemblies.
Typical Applications
- Industrial automation and machinery control panels.
- Electronic equipment and sensitive electrical loads.
- Control and instrumentation circuits.
- Industrial power supplies and automation equipment.
- Electrical sub-circuits requiring supplementary overcurrent protection.
- OEM machinery and control cabinet installations.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | ST200M | |
| ABB order code | 2CDS272334R0528 | |
| EAN | 4016779022743 | |
| Product type | Miniature circuit breaker / supplementary protector | |
| Number of poles | 2P | |
| Rated current | 30 A | |
| Tripping characteristic | Z | |
| Input voltage type | AC | |
| Rated operational voltage | 400 V AC according to IEC 60947-2 | |
| Rated insulation voltage (Ui) | 440 V | |
| Rated impulse withstand voltage (Uimp) | 4 kV | |
| Ultimate short-circuit breaking capacity | 15 kA at 400 V AC | |
| Ultimate short-circuit breaking capacity at 125 V DC | 15 kA | |
| UL 1077 interrupting rating | 10 kA at 240 V AC, 480Y/277 V AC and 125 V DC | |
| Standards | UL 1077, CSA 22.2 No. 235, IEC/EN 60947-2 | |
| Mounting type | DIN rail | |
| Weight | approx. 0.230 kg |
Frequently Asked Questions
What is the ABB ST202M-Z30 used for?
The ST202M-Z30 is a 2-pole supplementary miniature circuit breaker used to protect industrial equipment and electrical sub-circuits against overload and short-circuit currents.
What is the rated current of the ABB ST202M-Z30?
The ST202M-Z30 has a rated current of 30 A.
What does the Z characteristic mean?
The Z tripping characteristic provides sensitive instantaneous magnetic operation and is suited to appropriate electronic, control and other loads requiring rapid response to overcurrent conditions.
What is the breaking capacity of the ST202M-Z30?
The ST202M-Z30 has an ultimate short-circuit breaking capacity of 15 kA at 400 V AC according to IEC 60947-2.
Is the ABB ST202M-Z30 a UL 1077 supplementary protector?
Yes. The ST202M-Z30 is designed for UL 1077 supplementary overcurrent protection and has a 10 kA interrupting rating at specified UL voltages.
Trusted Circuit Protection from ABB
ABB ST200M miniature circuit breakers provide dependable supplementary protection for industrial control systems, machinery and electrical equipment, combining compact DIN-rail installation with established ABB circuit-protection technology.
