Residual current circuit breaker, 4-pole, type A, In: 40 A, 30 mA, Un AC: 400 V, bulk pack of 18 SENTRON 5SV3 residual current circuit breakers for comprehensive protection of people and property against electric shock. The residual current circuit breakers offer reliable safety during installation thanks to the reach-around and contact protection included as standard. With the convenient manual slider operation, you can remove the residual current circuit breakers from the DIN rail or from the busbar assembly without tools. The data matrix code on the device gives you quick access to all technical data in the Siemens Industry Online Support app. The SENTRON protective switching devices can be expanded to include many functions using the consistent accessories from the modular system. Optimum technology for your safety - only from Siemens.