This is a chassis for drawout 4 poles Masterpact MTZ2 25 N1/H1/H2//H3/H10 circuit breakers and MTZ2 25 HA/HA10 switch disconnectors. The drawout version brings some benefits compared to fixed version with visible separation of the power contacts via racking out. It offers also an easy and complete access to the device for periodic maintenance, and the possibility of a quick replacement of the device if necessary. Masterpact MTZ is the last generation of high current air circuit breakers up to 6300 A embedding advanced digital technologies. Masterpact MTZ is designed to protect electrical systems from damage caused by overloads, short circuits and equipment ground faults. The rated current of this chassis is 2500 A.