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Magnasphere Surface Mount Switch Set - MS28/MS29 and MS29P Series - 10 PACK

by GRI
Mount Type
Color: Gray
Various lead times may apply to this product. Please contact us for more details.

These products are all Made to Order

Which means they are non-cancelable and non-refundable


Magnasphere Surface Mount Switch Set

Magnasphere’s patented technology utilizes the principal of Spherical Magnetism. The heart of the switch is a magnetic sphere, or ball contact. This sphere is housed in a durable metal housing. Completing the switch is a seal that contains the contacting electrode, insulated from the magnetic perimeter by a time proven ceramic to metal bond. The case or seal provides the second contact point required to complete the electrical circuit. The seal/electrode cap is welded to the housing in an inert atmosphere providing a hermetically sealed contact.

PRINCIPLES OF SPHERICAL MAGNETISM: Finite element analysis shows magnetic flux paths of the Magnasphere's magnetic ball contact. The spherical shape is not polarity sensitive and will be attracted to either pole of the actuating magnet.


  • Higher Level of Security
  • Spherical Magnetism
  • Resistant to Magnetic Tamper and Defeat
  • Hermetically Sealed
  • Screw Down Flanges
  • Concealed Terminals on MS28
  • Built-in E.O.L. Resistors and Diodes
  • Switches and Magnets Available Separately
  • Colors: White, Brown, Gray
  • Private Labeling Upon Request
  • Standard Gap 3/8”
  • Lifetime Warranty
  • Made In U.S.A.


Installation Instructions

This series offers a standard gap of 1/2” inch and can be installed on a steel surface with a minimum gap penalty. The “P” style is a pre-wired switch with 2 feet of conductor cable. A broad range of mounting brackets are also available. 

What's In The Box

  • 1 x Magnasphere Surface Mount Switch Set