The PM10 is designed to provide secondary protection against power surges caused by external sources such as lightning strikes and electrical switching as well as providing a measure of protection from surge events generated on the secondary side of the filter.

The unit has been designed in accordance with AS3100, AS1768, IEC61643-1, IEC61000-6-1, 2, 3, 4 and other standards and codes as applicable.

The PM10 is a 3-stage protection unit utilising primary and secondary MOV protection in conjunction with an L/C filter. In addition, the unit also provide filtering of line harmonics and high-frequency noise with a cut-off frequency of ~10kHz and a nominal attenuation of 40dB.