The VTBC7-30-01-55 mini reversing contactor is a compact 3 pole contactor with 1 auxiliary contact and a wider voltage range from 50 to 90VDC. They are ideally suited for applications where reliability is a must and space is at a premium. Mini reversing contactors for tractions are used in different railway applications for the control of three-phase loads up to 4 kW (AC-3). Attachable accessories include surge suppressor, front-mounted 2-pole auxiliary switches and connecting links.