MX50 Auxiliary is to be installed in left side of 50 series products (such as MM50H MCB, ML50H RCD, MRO50, RCBO), with functioin of auxiliary contact, remote shunt tripper, and under-voltage.
Auxiliary contact: linked with ON, OFF mechanism of main circuit breaker, mainly used for indication of circuit breaker ON, OFF status. To connect with circuit breaker to control, through ON and OFF of circuit breaker, the auxiliary contact can take control or interlock to related electrical device.
Shunt tripper: it is a tripper used for voltage source excitation, its own voltage can be independent from the voltage of main circuit. So shunt tripper is an auxiliary of remote control tripping, can disconnect circuit by remote, to liaison with fire alarm system. It may also be used to remote control to trip off by emergency stop button.
Under-voltage tripper: it is a tripper to trip off circuit breaker, when its terminal voltage drop lower to a certain specified scope. Thus to protect the electrical equipment under circuit breaker, which is loading circuit, from the loss of under-voltage.
Shunt tripper + auxiliary contact; with function of shunt tripper and auxiliary contact at the same time.
Under-voltage tripper + auxiliary contact: with function of under-voltage and auxiliary contact at the same time.