MPSR Series
Ruggedized Magnetic Proximity Sensor

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The MPSR series from C&K are ruggedized magnetic proximity sensors, perfect for automotive sensors and indicators, industrial sensors, anti-tampering and other security, and factory automation equipment. The MPSR series sensor and magnet are both sealed in a tough aluminium housing combined with stainless steel wire sleeves, protecting them from the harsh environments they’re commonly used in, whether it be from oil, water, grease, or volatile chemicals and gases. Manufactured for a quick and easy installation, the MPSR series also have a long lifecycle – lasting for 2 million actions and a robust 30V 3W rating.

Features and Benefits

  • Long life - 2M operations
  • Hermetically sealed contacts
  • Quick & easy installation
  • Form C (SPDT) contacts w/ 3W 30V rating
  • Zero leakage current
  • Ruggedized housing

Typical Applications

  • Remote monitoring
  • Anti-tamper detection
  • Security
  • IoT
  • Off-road equipment
  • Trailers, containers and storage units
  • Industrial automation
  • Automotive sensors


  • Contact Rating:

    200mA @ 3W, 30 VDC

  • Electrical Life:


  • Contact Resistance:

    300 mΩ (max. initial)

  • Dielectric Strength:

    150 VDC (minimum)

  • Operating Temperature:

    –40°C to 80°C

  • Certifications:


= Most Common

Current Rating Circuit Mounting Type Sealing Illumination Switch Function Electrical Life Cycles Voltage Rating - AC Voltage Rating - DC Actuator Type Termination Style Operating Force, Torque Release Force Pretravel Overtravel Packaging
200mA (DC) SPDT Flange Mount Sealed - IP69 No/None 2,000,000 30V 30V Magnet Wire Leads Bulk