PROTON M air circuit breaker for currents up to 6300 A is designed for operation in electrical installations at a rated voltage of up to 690 V AC at a frequency of 50/60 Hz. PROTON M is supplemented by an accessory kit – shunt trip, shunt coil, undervoltage release, motor operator for spring charging. Available in fixed and withdrawable versions. 3-pole and 4-pole versions are available for order, with horizontal or vertical connection terminals. PROTON M is designed for making and breaking operations, as well as for protection against overcurrents and ground faults. Standard electronic trip units MP4 and MP6 with expanded functionality – measurement and graphical display of a wide range of network parameters on an LCD, maintenance notifications, and a service log. Expanded LSI or LSIG protection functionality. Modbus in all MP4 and MP6 versions. Warranty on the device and accessories is 5 years.