xStart DC-actuated contactors [t-head2]

The market for DC actuated contactors is growing due to the increasing use of electronics. Whilst AC contactors were used 20 years ago with additional resistors and specially wound DC coils with a lot of copper were used till recently, the next quantum leap has started. Electronic components are now in use for the drives of DC actuated contactors.

The xStart contactor series DILM7 to DILM170 has been particularly optimized in the development of DC actuated contactors. The DILM17 to DILM170 DC contactors are no longer switched on or off in the conventional way using a coil but by means of an electronic unit.

The integration of electronics in the contactor drives makes different technical features possible which enable the contactors to offer outstanding performance in their daily use.

Universal voltage coils [t-head3]

The DILM17 to DILM170 DC actuated contactors cover the entire DC control voltage range with only 4 control voltage variants.

Voltage tolerance [t-head3]

Contactors are built in compliance with the IEC/EN 60947-4-1 standard. The requirement for operational safety even with small mains supply fluctuations is implemented with the reliable switching of contactors at between 85 to 110 % of the rated actuation voltage. The DC actuated DILM17 to DILM170 contactors now cover an even wider range in which they switch reliably. They allow reliable operation between 0.7 × U_cmin and 1.2 × U_cmax of the rated actuation voltage. The greater voltage tolerance than stipulated by the standard increases operating safety even with less stable mains conditions.