Motor filters

Efficient solutions for the motor outgoer

Moeller provides the matching solution with the motor filter DIL M12-XMSM providing an optimum suppression of interference with three-phase motors.

Using the tool-less plug connection interface the noise suppression element is quickly and easily inserted into the standard DILM7..M15 contactor without the need for tools. It thus enhances not only the operating safety of the system but also the service life on the contactor contacts.

Inductive loads are subject – even in the modern age of digital technology – to the physical laws of nature.

On of these laws is Lenz's law. It states:

• When an inductance is switched off the current will attempt to continue to flow with the same magnitude in the same direction.

At the load inductance a voltage source is established which establishes induction voltage peaks which are several multiples of the operating voltage.

Motors are inductive loads of this nature. When a motor is switched off, inductive voltages occur as an unwanted side effect and can cause interference in ongoing operations. These interference's even have the effect that the voltages between the windings are so high that the motor winding insulation breaks down and the motor is destroyed.

Moeller supplies you with the suitable motor suppressor elements for motors up to 7.5 kW:
– with an integrated system solution and
– on the basis of tool-less plug connection for direct installation on the contactor.

When you use the motor suppressor filter, voltage peaks and high-frequency interference caused by steep voltage rises are reduced significantly. This not only protects the motor but rather also significantly enhances the life of the contacts on the contactor.