Baldor NEMA 1 Enclosed DC Controls for PMDC and Shunt Wound Motor Applications:

For general purpose industrial use with permanent magnet or shunt wound DC motors.

SCR controls have a free-wheeling diode and feature adjustable accel, decel, current limit, IR comp, min. and max speed pots to match applications. The anti-demag feature protects PM motors and helps protect the SCR power bridge against direct shorts. The controls have US and Canadian UL component recognition. A Plug-in Horsepower Resistor and armature fuse must be ordered and installed in BC138, BC139, BC140, BC140-FBR, BC141 and BC142.