2CDH782010R0162 ABB S752DR-E16 Selective Main Circuit Breaker 2P 16A 25kA

Why Choose the ABB S752DR-E16 Selective Main Circuit Breaker?

The ABB S752DR-E16 is a high-performance 2-pole selective main circuit breaker (SMCB) designed to provide reliable overload and short-circuit protection in electrical distribution systems where high availability and selective coordination are essential. As part of the ABB S750 DR series, it combines line protection, isolation and selective operation in a compact DIN-rail-mounted device.

The S752DR-E16 uses a voltage-independent operating principle and features ABB's E selective tripping characteristic. Its selective behaviour helps ensure that downstream protective devices nearest to a fault operate first, reducing unnecessary interruption to unaffected circuits and improving continuity of supply within electrical installations.

With a rated current of 16 A, 2-pole configuration, rated operational voltage of 400 V AC and short-circuit breaking capacity of up to 25 kA, the S752DR-E16 is suitable for demanding low-voltage distribution applications requiring dependable selective protection.

Key Advantages

• Selective main circuit breaker for high-availability distribution systems.
• 16 A rated current with a 2-pole configuration.
• 25 kA short-circuit breaking capacity for robust fault protection.
• E selective characteristic supports coordinated operation with downstream MCBs.
• Voltage-independent operating principle for dependable circuit protection.
• Suitable for use as a main isolating device.

Key Features

• ABB S750 DR selective main circuit breaker series.
• 16 A rated current.
• 2-pole construction.
• E selective tripping characteristic.
• 400 V AC rated operational voltage.
• 690 V rated insulation voltage.
• Short-circuit breaking capacity up to 25 kA.
• DIN-rail mounting for straightforward integration into distribution equipment.

Reliable Selective Protection for Electrical Distribution

Selective main circuit breakers are designed to coordinate with downstream protective devices so that a fault can be disconnected as close as possible to its source. This selective operation helps minimise unnecessary outages and supports greater availability across electrical distribution systems.

The ABB S750 DR series combines overload and short-circuit protection with current-limiting selective behaviour. The S752DR-E16 is therefore well suited to distribution systems where reliable protection, isolation and coordination between protective devices are important design requirements.

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.
• Installations requiring high continuity of electrical supply.
• Main isolation and circuit protection applications.