Adding contacts to an existing assembly is simple with EMAS — the C1 clips into place with no special tooling required, and at just over £3, held in UK stock, it's a genuinely low-cost way to expand a switch's functionality rather than replacing the whole unit. We use these ourselves when adding status signalling to e-stops and selectors on our own panel builds.
Technical Details
Frequently Asked Questions
Which switches is this compatible with?
It's designed to clip onto EMAS's CP and CM series pushbuttons, selectors, e-stops, and joysticks — the same 22mm control unit range used throughout the CP product line.
Do I need any tools to fit it?
No — it clips into place on the back of the switch body without special tooling.
What's the difference between C1 and C2?
C1 is normally-open (N.O.) — the contact closes when the switch is actuated. C2 is normally-closed (N.C.) — the contact opens when actuated. Use C1 to add extra signalling or start functions, and C2 for stop or safety-interlock functions.
Can I stack multiple contact blocks on one switch?
Yes — contacts can be double-stacked where panel depth allows, letting you build up multi-function control units from a single switch body.
Industry Applications
- Manufacturing control panels — expanding a pushbutton or selector to drive an additional PLC input or indicator lamp
- Motor control circuits — adding auxiliary start/stop signalling to an existing switch
- Panel refurbishment & repair — replacing worn contact blocks on existing EMAS CP/CM series switches