The Schneider Electric C1036M050 is a MicroLogic 6.2 E-M electronic trip unit from the ComPacT NSX100...250 range, designed for fixed-mount circuit breakers protecting motor loads. It carries a trip unit rating of 50 A at 65 °C and a rated operational voltage of 690 V AC 50/60 Hz. The 3-pole, 3D protected configuration with LSIG protection functions means it handles overload (L), short-time short-circuit (S), instantaneous short-circuit (I), and ground-fault (G) protection — the full set for a motor feeder.
Motor protection specifics
The E-M designation means this trip unit is purpose-built for motor applications. It offers complementary motor protection functions including protracted starting time, underload, current unbalance, and stalled rotor detection. The motor tripping class is selectable among 10, 20, 30, 5 — class 30 is typical for high-inertia loads like fans or conveyors where starting current can persist for tens of seconds. The long-time protection delay adjustment range (Tr) varies by trip class: for class 5, 120 s at 1.5 x Ir; for class 30, 720 s at 1.5 x Ir. That range lets you match the trip curve to the motor's actual start profile. Short-time protection pickup (Isd) is adjustable across 9 settings from 5 to 13 x Ir. Instantaneous pickup (Ii) is fixed. Ground-fault pickup (Ig) is adjustable. Zone selective interlocking (ZSI) is included, which speeds up fault clearing by coordinating trip delays between downstream and upstream breakers — useful in a motor control center with multiple feeders.
The trip unit mounts into a ComPacT NSX fixed circuit breaker.