MRPR-3 Series - 19.7mm High Power Reed Switch

MRPR-3 Series Image
A miniature, normally open switch with a 19.69mm long x 2.84mm diameter (0.770" x .112") glass envelope. Capable of switching up to 200Vdc at 50W. It is rated to carry 3A and switch 1.5A. Available sensitivity range of 22-43 AT. High insulation resistance of 1010 ohms minimum and contact resistance of less than 100 milliohms. Ideally suited for limit sensing, telecom, office equipment and automotive applications. Will handle light inductive loads with no suppression circuitry.


  • Normally open switch capable of switching 200Vdc or 1.5A at up to 50 Watts
  • Available sensitivity range of 22-43 AT


  • Hermetically sealed switch contacts are not affected by and have no effect on their external environment
  • Zero operating power required for contact closure


  • Limit switching
  • Telecom
  • Office equipment
  • Light inductive loads

Access specifications, certifications, check availability and order parts below

Catalog #Switching Power (W)Switching Voltage (V DC)Switching Current (A DC)Breakdown Voltage (V DC)Max Contact Resistance (Ω)Magnetic Sensitivity (AT)Body Length (mm)Overall Length (mm)Switch TypeCompare
MRPR-3-22-28502001.53000.122 to 2819.6956.64A: SPST-NO
MRPR-3-22-33502001.53000.122 to 3319.6956.64A: SPST-NO
MRPR-3-27-33502001.53000.127 to 3319.6956.64A: SPST-NO
MRPR-3-27-38502001.53000.127 to 3819.6956.64A: SPST-NO
MRPR-3-32-38502001.53000.132 to 3819.6956.64A: SPST-NO
MRPR-3-32-43502001.53000.132 to 4319.6956.64A: SPST-NO
MRPR-3-37-43502001.53000.137 to 4319.6956.64A: SPST-NO

pdf icon Flow Sensing in Tankless Water Heaters Application Note

Reed switches and sensors are highly effective solutions for flow sensing applications that can be used for detecting the presence of fluid flow in a system or even measure the rate of fluid flow.

pdf icon Magnetic Sensing in Washing Machines Application Note

A most integral appliance in any home is a washing machine. Washing machines have helped made the chore of cleaning clothes quite effortless.

pdf icon Rice Cooker Lid Lock Application Note

The position sensing lid lock ensures that the lid is securely locked in place.

pdf icon Sensors Products Catalog

This guide provides an introduction to magnetic sensing and options for value-added custom design packages.

pdf icon Reed Switch Selection Guide

A quick reference guide to selecting reed switches for electronic applications

pdf icon Littelfuse Electronics Reed Switches RoHS Compliance

RoHS: Restriction of Hazardous Substances. This European directive states that no component can contain concentrations of the following materials greater than shown