System circuit breaker locking strength. - Modular Box 305 x 350 x 95mm. - Four pole circuit breaker curve C for the motor supply (curve D on request). - With STEP RELAY bipolar. - Leg Lock permanent DTU - Meets NFP 82-212 and DTU NCF 1500 No. 70-1 December 1980 - CE Certified - Higher than 40A and DTU double on request. Former reference: DTUS40A