Electronic Motor Protection 320 - 327 Series Relay

The 320 - 327M Series of electronic motor protection relays provide comprehensive protection required by motors running constantly at full load and occasionally beyond their limitations. Motors driving crushers, ball mills or high inertia loads especially with long run-up starting times are ideal applications.

Thermal overload protection, running stall and jam protection, earth fault and short circuit protection along with selectable start attempt limitations are features of the relay. A built in motor load current transducer is useful for indicating the % motor load through the 4-20mA loop.

Available in Amp calibration range from 0,8A to 1680A split over 7 Amperage selection bands. Also available in a % calibration with the maximum load setting expressed as the M.F.L. current divided by the C.T. Ratio, multiplied by 100.