EATON M22-CK01 Contact Element, 1 NC, Front Mounting, Spring-Cage Terminal

Emergency stop circuits, mode selector stations, and status lamps all rely on precise switching behind the control panel. The EATON M22-CK01 contact element is purpose-built for M22 series pushbuttons and pilot devices, offering a single normally-closed contact in a front-mount package that snaps directly into the actuator. Its spring-cage terminal accelerates wiring and ensures a vibration-proof connection.

Key specifications

• Contact configuration: 1 NC (normally closed)
• Mounting: Front mounting for Eaton M22 devices
• Terminal: Spring-cage terminal, wire capacity 0.5–2.5 mm² solid/stranded
• Rated operational voltage: 500 V AC / 250 V DC
• Rated insulation voltage: 500 V; rated impulse withstand voltage: 6 kV
• Rated operational current AC-15: 6 A (230 V); DC-13: 0.2 A (220 V)
• Degree of protection: IP20 (terminals)
• Operating temperature: –25 °C to +70 °C
• Mechanical life: > 5 million operations; electrical life: > 0.5 million operations
• Standards: IEC/EN 60947-5-1, VDE 0660 Part 200; approvals: CE, UL, CSA

Why choose it

Eaton's M22 line is known for modular flexibility and robust engineering. This contact element inherits that heritage, providing consistent switching under industrial temperature extremes. The spring-cage terminal eliminates the need for periodic re-tightening, reducing maintenance across the machine's lifetime. With approvals for international markets, it simplifies panel assembly and keeps your equipment compliant.

Ideal use cases

• Emergency stop circuits in control panels and machinery
• Status feedback for pilot lights and PLC inputs
• Selector switches in motor starter stations
• Automation equipment with front-mounted control devices

Good to know

This contact element is rated for over 5 million mechanical operations, but the electrical load life depends on switching current and voltage. Always derate appropriately for inductive loads. When installing, the spring-cage terminal accepts up to 2.5 mm² conductors; use the correct screwdriver to open the cage and insert the wire without stripping too much insulation. The front mounting design allows quick assembly without special tools, making it a technician-friendly choice for both new builds and retrofits.