The control box is a component part of the system, providing management and protection. All control relays, reversing DC contactor, fuses, high speed DC circuit breaker and adjustable motor jam protection are contained in this stationary mounted panel to insure repeatable performance and reliability. User serviceable parts (control circuit fuses) and circuit breaker are easily accessible from the front panel. All field connections are made through MIL Spec. gender-keyed receptacles which insure a failsafe installation or replacement.