To get power into your van you need a 15-amp inlet and if you’re looking at a CMS system or replacing one then this is what you need as it starts from here.
The CMS 15-amp power inlet features all the usual appointments of a regular 15-amp inlet such as a spring-loaded weather flap, IP44 rating, large earth pin and common sized four screw mount-frame but on rear it features the classic CMS plug in socket with safety clip for a quick, simple & dependable connection that your electrician will love.
The new standard requires to have the breakers on the outside of the van. This is an easy way to achieve this.