This is an MX working current release for devices ComPact NS 630b to ComPact NS 3200. Its rated voltage is 48-60 V DC or 48 V AC 50/60 Hz. It is an accessory used for emergency stop or remote opening applications. This auxiliary function switches off the circuit breaker when the control voltage Un rises above 70% of its rated voltage Un. It complies with the standard IEC 60947-2. The devices ComPact NS 630b to ComPact NS 3200 can be equipped with 1 MX or 1 MN auxiliary device.