The Valco MK1PUP1 is a plastic-bodied terminal microswitch with a single changeover (1CO) contact arrangement and a slim piston actuator. It is built for industrial position-sensing, limit-switching, and machine-control applications in control panels and automation enclosures.

Contacts are AgNi for stable switching, rated 6A at 250V AC in AC15 (inductive) and 10A in AC12 (resistive). A mechanical life of 10000000 operations and electrical life of 100000 operations back long-term use in cycling installations.

Key Features

• Single changeover (1CO) contact configuration
• Slim piston actuator for tight-tolerance position sensing
• AgNi contact material for stable switching across cycles
• IP20-rated plastic body for in-panel mounting
• 6.3 x 0.8 mm cable terminal section for standard quick-connect lugs

Product Benefits

• Slim piston actuator works in confined mechanical layouts
• Dual current rating (AC15 / AC12) supports inductive and resistive loads
• High mechanical life suits high-cycle machine cycles
• 2.5 kV impulse withstand voltage gives margin against transients
• Wide -25 to +80 °C range supports unconditioned cabinets

Technical Specifications

• Brand: Valco
• Model / MPN / EAN: MK1PUP1 / 005600901
• Contact: 1CO
• Actuator: Slim piston
• Rated Current (AC15): 6A at 250V AC
• Rated Current (AC12): 10A
• Mechanical Life (min): 10000000 operations
• Electrical Life (min): 100000 operations
• Operating Frequency: Mech. 3000 / Elec. 1200 On-Off per hour
• Insulation Voltage (Ui): 660V
• Impulse Withstand Voltage (Uimp): 2.5 kV
• Dielectric Strength (Body-Contact): 1890V AC
• Dielectric Strength (Contact-Contact): 1890V AC
• Isolation Resistance: 10 MΩ min at 500V DC
• Operating Temperature: -25 to +80 °C
• Protection Rating: IP20
• Contact Material: AgNi
• Cable Terminal Section: 6.3 x 0.8 mm
• Short-Circuit Breaking Capacity (Ics): 1 kA
• Body Material: Plastic
• Package Contents: 1x Valco MK1PUP1 Terminal Microswitch plastic 1CO

Why You'll Love It

• A neat slim-piston part fits into machine assemblies where larger limit switches do not
• Quick-connect 6.3 x 0.8 mm terminals speed up panel wiring and replacements
• The 10000000 mechanical and 100000 electrical cycle ratings cover most factory duty
• Standard plastic body and AgNi contacts keep this a familiar drop-in spare