Details of MPS20WGW Magnetic Proximity Sensor

The MPS20WGW is a model of magnetic proximity sensor belonging to the MPS Series, manufactured by C&K Components, Inc. It is designed for industrial and automotive applications, featuring reliable performance and easy installation. The comprehensive information of this model is organized as follows:

1. Basic Model Specification

The core parameter defining the MPS20WGW model is its switch type and actuation gap, which determines its installation and application scope:

• Switch Type: Standard surface mount with screw terminals
• Make Gap: 1 1/4" (1.25 inches)

2. General Features & Benefits (Applicable to MPS20WGW)

As a member of the MPS Series, the MPS20WGW shares the following standard features and benefits:

• Long Service Life: 10 million mechanical and electrical operations, ensuring stable performance in long-term use
• Sealed Contacts: Enhances durability and resistance to harsh environments
• Quality Construction: Adopts high-quality materials and precision manufacturing for reliable operation
• Quick and Easy Installation: Designed with standard surface mount and screw terminals for convenient assembly

3. Technical Specifications (MPS Series Standard, Applicable to MPS20WGW)

3.1 Electrical Specifications

• Contact Ratings: 3.0 W max. @ 30 V DC; 30 V AC max. @ 0.3 AMP max.; 1.0 AMP max. carry current
• Operate Time: 1.0 msec. max. (including bounce)
• Contact Resistance: 100 milliohms max. (initial)
• Dielectric Strength: 200 V DC min.
• Electrical Circuit: SPST NO (Contact Form A); Reed switch opens when magnet is removed from proximity, and contacts are held closed when magnet is within actuation range

3.2 Material Specifications

• Housing/Spacer/Cover: ABS plastic (UL94V-0), white color
• Reed Switch: Rhodium coated reed contacts, hermetically sealed in a nitrogen-filled glass capsule; suitable for closed loop circuits
• Wire Leads: UL 1061, 22 AWG stranded wire (copper or aluminum); 12 inches in length with stripped ends; white color
• Potting (Around Wires): Epoxy, ensuring waterproof and dustproof performance
• Magnets: Alnico V (applicable to all MPS Series models except MPS80WG), matching the sensor for reliable actuation

3.3 Environmental & Mechanical Specifications

• Operating Temperature: -40°F to 212°F (-40°C to 100°C), suitable for a wide range of temperature environments
• Operating Distance/Alignment: Operate (pull-in or make) points are nominal values with ± 10% tolerance; Release points are 110% to 150% of the operating points
• Mounting Type: Standard surface mount (screw terminals), no adhesive mounting (adhesive is exclusive to MPS45WGW)

4. Actuation Chart & Alignment Requirements

The MPS20WGW features a specific actuation chart for offset of centerlines and distance between faces of the switch and magnet (unit: inches). Key alignment requirements are as follows:

• The switch and magnet must be installed in parallel or end-to-end configuration, and never in a "T" configuration.
• Gap distance is a combination of horizontal and vertical plane separation of the switch and magnet. For example, if a recessed magnet is 1/4″ off the centerline of the switch, the make gap is reduced by 1/4″.
• Wide gap contacts (including MPS20WGW) are polarity sensitive; alignment dots should be used for proper installation of surface mount contacts.

5. Typical Applications

As a standard surface mount magnetic proximity sensor, the MPS20WGW is widely used in the following scenarios:

• Automotive sensors and indicators
• Industrial sensors
• Factory automation equipment