Adding contacts to an existing assembly is simple with EMAS. This spare part is suitable for many of the P Series control boxes, typically part numbers starting P1C or P1EC (emergency style). The C4CK clips into the rear of the box assembly, giving a solid mechanical fit that resists knocks and vibration, and at a low cost held in UK stock it's a quick way to upgrade a safety circuit without replacing the whole control box.
It can be used to provide additional switching or signalling. Commonly fitted to replace an existing normally open block, providing compatibility with 2 channel safety relays.
Technical Details
Frequently Asked Questions
Which control boxes is this compatible with?
It's designed for EMAS P Series control boxes — commonly part numbers starting with P1C, or P1EC for emergency-style boxes. Check your box's part number prefix before ordering.
Why would I need this instead of the C3CK?
This C4CK is normally-closed (N.C.), commonly fitted to replace an existing normally-open block when your circuit needs compatibility with a 2-channel safety relay — a common requirement for emergency stop or safety interlock upgrades.
Do I need any tools to fit it?
No — it clips into the rear of the box assembly without special tooling, giving a solid mechanical fit resistant to knocks.
Can this help me upgrade to a 2-channel safety circuit?
Yes — swapping in a normally-closed C4CK is the standard way to add the second N.C. channel a 2-channel safety relay needs on an existing control box.
Industry Applications
- Machine safety upgrades — adding the second N.C. channel needed for 2-channel safety relay compliance
- Control box refurbishment — restoring or replacing contact blocks on P Series control boxes
- Panel builders & OEMs — customising standard control box wiring for safety-rated switching arrangements