EV Parts > Controllers > Sevcon > MillipaK SEM 633T45303

Click on an image above to enlarge in a new window ^

Sevcon MillipaK SEM
P/N# 633T45303

48V 500A SEM Controller



The Millipak family of DC and AC motor controllers provides an enhanced thermal design for traction and pump systems. Millipak controllers deliver high power capabilities in a minimum of space without compromising performance.

Speed, efficiency, flexibility. SEM offers a contactor-free solution to regenerative braking and field weakening, with improved efficiency. Complementary switching techniques provide improved speed control without added sensors

Sevcon's patented MOSFET switching design delivers peak dependability and performance, as well as silent operation utilizing a 16 kHz high switching frequency.

As application data is stored in flash memory on the controller, it can be reprogrammed in place, increasing flexibility and commonality of system design.

Various configurations of digital and analog inputs and outputs (I/O) are standard and suitable for many applications. Functions can include throttle inputs, limit switch inputs, contact drives, hour counters, and instrumentation. This allows use as a stand-alone controller or integration into a vehicle system.


Compact Design
Silent Operation
Torque/Speed Control
Regenerative Braking
Diagnostic LED
Calibrator Interface
Flash Memory
IP66 Protection


Battery Voltage
  Peak current (1 min.)
  Field current
  Operating temperature
-30 to +40ºC (ref. SAE J1211)
  Storage temperature
-40 to +70ºC (ref. SAE J1211)
  Ingress of dust and water
95% (at 60ºC)
6 G (NAVMAT P9492 random vibration test profile)
  Switching frequency
16 kHz