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2CDH782010R0517 ABB S752DR-K25 Selective Main Circuit Breaker 2P 25A 25kA
ABB S752DR-K25 is a 2-pole 25 A K-selective main circuit breaker with 25 kA short-circuit breaking capacity for reliable protection and selective coordination in low-voltage electrical distribution systems.
£162.11
Why Choose the ABB S752DR-K25 Selective Main Circuit Breaker?
The ABB S752DR-K25 is a high-performance 2-pole selective main circuit breaker (SMCB) designed to provide reliable overload and short-circuit protection in low-voltage electrical distribution systems where continuity of supply and selective coordination are essential. As part of the ABB S750 DR series, it operates on a voltage-independent principle and is specifically designed for energy distribution systems with demanding availability requirements.
The S752DR-K25 features ABB's K selective tripping characteristic and current-limiting selective operation. The S750 DR design provides total selectivity to downstream miniature circuit breakers and excellent selectivity to upstream protective devices, helping isolate faults locally while reducing unnecessary interruption to unaffected circuits.
With a rated current of 25 A, a 2-pole configuration, rated voltage of 400 V AC and short-circuit breaking capacity of 25 kA, the S752DR-K25 provides robust protection for demanding electrical distribution applications. Its compact DIN-rail-mounted design makes it suitable for integration into distribution boards and electrical panels.
Key Advantages
- Selective main circuit breaker designed for high-availability distribution systems.
- 25 A rated current with a 2-pole configuration.
- 25 kA short-circuit breaking capacity at 400 V AC.
- K selective tripping characteristic for coordinated circuit protection.
- Voltage-independent operating principle for dependable protection.
- Current-limiting selectivity helps minimise disruption to unaffected circuits.
Key Features
- ABB S750 DR selective main circuit breaker series.
- 25 A rated current.
- 2-pole construction.
- K selective tripping characteristic.
- 400 V AC rated voltage.
- 25 kA short-circuit breaking capacity.
- 50/60 Hz rated frequency.
- Voltage-independent operating principle.
- DIN-rail mounting for straightforward distribution-board installation.
Reliable Selective Protection for Electrical Distribution
Selective main circuit breakers are designed to coordinate with other protective devices so that electrical faults can be disconnected as close as possible to their source. This selective operation helps maintain supply to unaffected circuits and improves overall availability within electrical distribution systems.
The ABB S750 DR series combines overload and short-circuit protection with voltage-independent operation and current-limiting selectivity. These characteristics make the S752DR-K25 particularly suitable for installations requiring reliable main circuit protection and effective coordination with downstream miniature circuit breakers.
Typical Applications
- Main protection in low-voltage electrical distribution systems.
- Commercial and industrial distribution boards.
- Building electrical installations requiring selective protection.
- Distribution systems with downstream miniature circuit breakers.
- Electrical installations requiring high continuity of supply.
- Main circuit protection in energy distribution equipment.
Technical Specifications
| Series | S750 DR |
|---|---|
| ABB order code | 2CDH782010R0517 |
| EAN | 4016779879484 |
| Product type | Selective main circuit breaker (SMCB) |
| Number of poles | 2 |
| Rated current | 25 A |
| Tripping characteristic | K selective |
| Rated voltage | 400 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated ultimate short-circuit breaking capacity (Icu) | 25 kA at 400 V AC |
| Rated short-circuit breaking capacity (Icn) | 25 kA at 400 V AC |
| Mounting type | DIN rail |
| Dimensions (W × H × D) | 54 × 130 × 96 mm |
| Weight | approx. 0.7 kg |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S752DR-K25 used for?
The S752DR-K25 is used as a selective main circuit breaker for overload and short-circuit protection in low-voltage electrical distribution systems.
What is the rated current of the S752DR-K25?
The ABB S752DR-K25 has a rated current of 25 A.
How many poles does the S752DR-K25 have?
The S752DR-K25 is a 2-pole selective main circuit breaker.
What is the breaking capacity of the S752DR-K25?
The S752DR-K25 has a short-circuit breaking capacity of 25 kA at 400 V AC.
What does the K selective characteristic provide?
The K selective characteristic provides coordinated selective protection, helping downstream protective devices isolate local faults while maintaining electrical supply to unaffected circuits.
Trusted ABB Circuit Protection
ABB S750 DR selective main circuit breakers provide dependable overload and short-circuit protection with selective coordination for electrical distribution systems where continuity of supply and reliable fault isolation are important.
