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2CDS272334R0161 ABB ST202M-D16 Miniature Circuit Breaker 15kA 2P D 16A UL 1077
ABB ST202M-D16 is a 16 A two-pole D-characteristic miniature circuit breaker with 15 kA IEC ultimate short-circuit breaking capacity and UL 1077 supplementary protection for industrial circuits and high-inrush electrical loads.
£51.36
Why Choose the ABB ST202M-D16 Miniature Circuit Breaker?
The ABB ST202M-D16 is a high-performance two-pole miniature circuit breaker (MCB) designed to provide supplementary overcurrent and short-circuit protection in industrial, commercial and machine-building electrical systems. As part of the ABB System pro M compact ST200M series, it combines a D tripping characteristic with a 16 A rated current for dependable protection of circuits supplying equipment with high starting and inrush currents.
Designed for applications requiring UL 1077 supplementary protection, the ST202M-D16 provides two-pole circuit protection in a compact DIN rail format. Its D tripping characteristic is particularly suited to transformers, inductive equipment and other electrical loads that can produce substantial transient currents during start-up.
With a rated current of 16 A, a two-pole configuration and an ultimate short-circuit breaking capacity of 15 kA at 400 V AC and 125 V DC according to IEC 60947-2, the ST202M-D16 provides robust supplementary protection for demanding industrial applications. Its UL 1077 interrupting rating is 10 kA at 480Y/277 V AC and 125 V DC.
Key Advantages
- Compact two-pole miniature circuit breaker for supplementary circuit protection.
- 16 A rated current suitable for industrial control, machinery and auxiliary circuits.
- D tripping characteristic accommodates high starting and inrush currents.
- 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC according to IEC 60947-2.
- 10 kA UL 1077 interrupting rating at 480Y/277 V AC and 125 V DC.
- Compact DIN rail construction enables straightforward integration into industrial electrical panels and OEM equipment.
Key Features
- ABB System pro M compact ST200M series.
- 16 A rated current.
- 2-pole configuration with 2 protected poles.
- D tripping characteristic.
- 15 kA ultimate short-circuit breaking capacity at 400 V AC and 125 V DC.
- 11.2 kA service short-circuit breaking capacity at 400 V AC.
- 400 V AC rated operational voltage according to IEC 60947-2.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 50–60 Hz rated frequency.
- Energy limiting class 3.
- Designed in accordance with UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
Reliable Supplementary Protection for High-Inrush Loads
Miniature circuit breakers such as the ABB ST202M-D16 automatically interrupt a circuit when excessive current caused by an overload or short circuit is detected. This helps protect conductors and connected electrical equipment while providing convenient resettable protection for industrial control, auxiliary and machine-building circuits.
The D characteristic is designed to tolerate higher transient starting currents than B or C characteristics, making the ST202M-D16 particularly suitable for transformers, highly inductive equipment and machinery with significant start-up current. Combined with its 16 A rating, two-pole protection and high IEC short-circuit breaking capacity, it provides a robust supplementary protection solution for demanding industrial electrical systems.
Typical Applications
- Industrial machinery and electrical control panels.
- Automation and process-control equipment.
- Transformer and highly inductive load circuits.
- Control circuits with high equipment start-up currents.
- Commercial and industrial electrical equipment.
- OEM machinery requiring UL 1077 supplementary protection.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | System pro M compact ST200M | |
| ABB order code | 2CDS272334R0161 | |
| EAN | 4016779021708 | |
| Product type | Miniature circuit breaker (MCB) | |
| Product group | UL 489 / UL 1077 MCB | |
| Number of poles | 2 | |
| Number of protected poles | 2 | |
| Rated current | 16 A | |
| Tripping characteristic | D | |
| Rated operational voltage | 400 V AC according to IEC 60947-2 | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated ultimate short-circuit breaking capacity | 15 kA at 400 V AC / 125 V DC | |
| Rated conditional short-circuit current | 15 kA at 230 / 400 V AC | |
| Rated service short-circuit breaking capacity | 11.2 kA at 400 V AC | |
| UL 1077 interrupting rating | 10 kA at 480Y/277 V AC / 125 V DC | |
| Rated frequency | 50–60 Hz | |
| Energy limiting class | 3 | |
| Overvoltage category | III | |
| Degree of protection | IP20 | |
| Pollution degree | 3 | |
| Operating ambient temperature | -25 to +55 °C | |
| Terminal type | Double clamp | |
| Rigid conductor capacity | up to 35 mm² | |
| Flexible conductor capacity | up to 25 mm² | |
| Standards | UL 1077, CSA 22.2 No. 235, IEC/EN 60947-2 | |
| Mounting type | DIN rail | |
| Modular width | 2 modules | |
| Dimensions | 35 × 88 × 69 mm | |
| Net weight | approx. 0.23 kg |
Frequently Asked Questions
What is the ABB ST202M-D16 used for?
The ST202M-D16 is a two-pole miniature circuit breaker designed for supplementary overcurrent and short-circuit protection in industrial control, machinery and other electrical circuits, particularly those supplying loads with high starting currents.
What is the current rating of the ST202M-D16?
The ABB ST202M-D16 has a rated current of 16 A.
What does the D characteristic mean?
The D tripping characteristic accommodates high starting and inrush currents, making it suitable for transformers, highly inductive equipment and other loads that can draw substantial transient current during start-up.
What is the short-circuit breaking capacity of the ABB ST202M-D16?
The ST202M-D16 has an ultimate short-circuit breaking capacity of 15 kA at 400 V AC and 125 V DC according to IEC 60947-2. Its UL 1077 interrupting rating is 10 kA at 480Y/277 V AC and 125 V DC.
Which standards does the ST202M-D16 meet?
The ST202M-D16 is designed in accordance with supplementary circuit protection standards including UL 1077, CSA 22.2 No. 235 and IEC/EN 60947-2.
Trusted ABB Circuit Protection
ABB System pro M compact miniature circuit breakers provide dependable supplementary circuit protection for industrial control, automation and machine-building applications, combining compact DIN rail installation with robust overload and short-circuit protection.
