Siemens Residual Current Circuit Breaker with Overload Protection, 100A, 4-Pole, 300 mA Trip Sensitivity 5SU1674-8BK81

Siemens 5SU1674-8BK81 Residual Current Circuit Breaker combines overload protection, earth-leakage detection, and high breaking capacity to deliver enhanced electrical safety. Designed for professional industrial and commercial panel installations, this RCBO (Residual Current Circuit Breaker with Overload) offers a robust 100A current rating in a 4-pole architecture. Its advanced trip sensitivity of 300 mA makes it suitable for applications requiring improved leakage fault detection and system protection.

The device is engineered with a lever-operated reset actuator, supporting easy and ergonomic operation. Mounting is streamlined with reliable DIN rail compatibility, facilitating secure use in electrical distribution boards. Operating at a rated AC voltage of 400V, this circuit breaker addresses demanding requirements in manufacturing, automation, HVAC, water treatment, and large commercial infrastructure.

Provides reliable current interruption with 100A rating and 4-pole configuration. Ensures additional overload protection with integrated trip mechanism. Built-in 300 mA trip sensitivity for enhanced safety against earth leakage.

DIN rail mountable for easy and efficient installation in electrical panels. Suitable for 400V AC operating voltage in industrial and commercial applications. Lever reset actuator for quick and convenient operation. Compliant with CE, EAC, and VDE standards for quality assurance.

Part of the Sentron series, offering extended product life and robust design. Breaking capacity of 10kA for reliable protection during fault conditions. Designed for use in industrial, automation, and building electrical systems.

This Siemens RCBO boasts extended product life and best-in-class quality, as certified by CE and VDE standards. Its compact dimensions (90mm height, 77mm depth, 198mm width) make it easy to integrate even in space-constrained panels. With screw terminal arrangement, installation and maintenance are simplified for electrical professionals.

Applications span from industrial control panels, laboratory power distribution, HVAC and water treatment plants, to residential and commercial buildings requiring advanced safety devices. The advanced design accommodates overvoltage category III and pollution degree 2 environments, making it suitable for demanding use cases. The Sentron series ensures reliable performance and extended product lifecycle.

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