The CV1BH1H0ZMD11 is a TeSys B single-pole contactor from the Schneider Electric TeSys range, designed for motor starting and resistive load switching. The 220 V DC coil suits installations where a DC control bus is already in place — common in marine switchboards and industrial DC auxiliary systems.
The AC-1 rating covers resistive loads like heating elements, where the switching current is purely sinusoidal and contact wear is lower. The 690 V AC rated operational voltage means the contactor can be used on 400 V or 480 V systems with headroom, and on 690 V line-to-line circuits common in heavy industrial and marine installations. The single-pole (1P) configuration with 1 NO main pole is suited for single-phase motor control or DC load switching where only one line needs interruption.
Control circuit and auxiliary contacts
The 220 V DC control circuit voltage is a fixed nominal — the coil holds in at that level, and dropout occurs below the manufacturer's release threshold. Auxiliary contact composition is 1 NO + 1 NC, giving one normally-open and one normally-closed feedback contact for status indication or interlocking. This is sufficient for basic seal-in circuits or PLC digital input feedback, but for more complex logic, an additional auxiliary contact block would be needed.