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MRE Series Reed Relay


The MRE Reed Relay is a special series focused on High Voltage, High Current and High Insulation Resistance. This relay is capable of switching up to 1 kVDC, and, considering its compact size, it provides an extra high breakdown voltage of 7 kVDC (HV version) across the open contacts, or high carry current of 5 Amps (HC version).

This compact Dual-channel Dry-switch design uses two contacts in series or connected in parallel. Also, it features an integrated Magnetic Shield and high creepage distance pinout. As a result, you can expect High Insulation Resistance of 10 TOhm across open contacts as well as between coil and contacts, and thus a very Low Leakage Current in the picoamperes range.

Lastly, from reliable switching to long lifetime and Low Contact Resistance (ON-Resistance), the MRE relay series is ideally suited for ARC testers, precise testers, automated test equipment and medical equipment.


Coil Voltage (VDC)5, 12, 24
Coil Resistance (Ω)150-1400
Contact Form1A, 2A Normally Open (N.O.)
Rated Power Max.100W/1000VDC/1A
Breakdown Voltage7kVDC and above


Automated test equipment (ATE), high-insulation / high-accuracy testers, test equipment for semiconductors, high-voltage industrial application, test & measurement, medical equipment

Series Data Sheet (PDF)

Stock Check

Item No.DatasheetDistributorRegionQuantityCartRFQInventory Date
MRE05-1A79-HIHeilind ElectronicsAmericas0 RFQ2023-08-01
MRE24-2A85-PDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE24-1A85-HVDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE24-1A85-HCDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE12-2A85-PDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE12-1A85-HVDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE12-1A85-HCDigi-Key ElectronicsAmericas0 RFQ2023-08-01
MRE051A79BV384Relay Specialties, IncAmericas3 RFQ2023-01-23
MREStandex FactoryAmericas0 RFQ2023-09-22
MRE24-1A66Mouser ElectronicsAmericas400 BUY RFQ2023-09-22
MRE12-1A79-HIMouser ElectronicsAmericas1 BUY RFQ2023-09-22
MRE24-1A88Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-1A79Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-2A79Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-2A79-HIMouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-1C90Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-2A66Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-1A31/1Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-4A66 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-1A66Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-1A79-HIMouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-2A79Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-4A66 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-4A79-HI Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-4A66 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-2C90 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-1A79-HIMouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-2C90 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-1A79-BV043Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-4A79-HIMouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-1A66Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-2A66Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-1A79Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE12-1C90Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-2A66Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-1A85Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-4C90 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-2A79-HIMouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-2C90 Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-1C90-BV51545Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE15-2C90Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE24-2A31Mouser ElectronicsAmericas0 RFQ2023-09-22
MRE05-1C90-BV51545TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-1A79-HITTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1A66TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1A88TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-4C90 TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-1A66TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-1A66-844TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-2A66TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-1A79TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-1A66TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-4A66 TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1C90TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-1A79-BV043TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1A79-HITTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-1C90TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-4A66 TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-2A66TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE12-2C90 TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-2A79TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-1A79-HITTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-2A31TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE05-4A79-HITTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1A79TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22
MRE24-1A85TTI Inc Global HeadquartersAmericas0 RFQ2023-09-22

Parametric Search

Coil VoltageSwitches & Contact FormContact ConfigurationSwitching LoadSwitching VoltageMounting TypeOptionSpecial Feature
Part NumberCoil VoltageSwitches & Contact FormContact ConfigurationSwitching LoadSwitching VoltageMountingOptionSpecial Feature
MRE05-2C9052CDPDT< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE05-4A6654A4PST-NO< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE05-4A7454A4PST-NO< 50 W< 500 VDCThrough Hole (THT)Magnetic Shield
MRE12-2C90122CDPDT< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE12-4A66124A4PST-NO< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE12-4A79-HI124A4PST-NO< 50 W< 1000 VDCThrough Hole (THT)StandardHigh Insulation Resistance
MRE24-2C90242CDPDT< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE24-4A66244A4PST-NO< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield
MRE24-4C90244C4PDT< 10 W< 200 VDCThrough Hole (THT)Magnetic Shield

Technical Papers

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Standex Electronics Global Reed Switch Products and Capabilities

As the leader in reed switch technology, Standex impacts lives by contributing to effective product performance in household, automotive and utilities applications.

Standex Electronics Japan | Company Video

Standex Electronics Japan is a worldwide market leader in the design, development, and manufacturing of magnetic reed switches. Headquartered in Kofu City, Japan it was previously branded as the OKI Sensor Device Corporation prior to being acquired by Standex Electronics, Inc., a division of Standex International. The new name of OKI Reed Switches is KOFU, A Standex Electronics Brand.

Reed Switches for Smart Home Automation Systems

Reed Switches work well with smart home automation systems because they draw no power compared to other magnetic sensing elements. They can be married to a wireless or Bluetooth technology and placed in remote battery powered door sensors or window sensors, or anything where you’re looking for movement or proximity. They’re a very cost-effective and robust component suitable for the home environment, requiring fewer connections resulting in longer battery life.

In today’s homes and also commercial properties, there’s an increased necessity for control to improve efficiency and productivity. And with that control, you have different products that measure temperature, water levels, security, and locks, so within those products reed switches play a major role in making them “smart”.

Standex Electronics is a global leader in the design, development, and manufacturing of standard and custom Reed Switches.

Product Training Module – RF Reed Relays Part I

Welcome to Standex Electronics' RF Reed Relays Part I training module. Reed relays have long been known to have the capability to switch and carry RF signals and fast digital pulses. Hardly anyone thought reed relays were capable of switching and carrying RF up to 20 GHz, because the reed switch's leads are composed of nickel/iron which has a relatively high permeability or (MU). However, 20GHz is now a reality at Standex Electronics. We will be presenting the reasons Standex Electronics and their design team have made this possible.

Product Training Module – RF Reed Relays Part II

Welcome to Standex Electronics' RF Reed Relays Part II training module. This second RF presentation assumes you have already heard the first Standex Electronics RF Part I presentation. Understanding the simple physical layout of a reed relay makes it easy to design and rest reed relays for RF and fast digital pulse applications. RF is dependent on the physical layout or signal path it takes while going through circuits and the components that make up those circuits. We will show you how the physical layout of the reed relay will have a direct bearing on the RF signal's success going into and out of the reed relay. Coupled with the relay's physical layout, the materials making up the reed relay are also important.

Product Training Module – Reed Relay Overview

Welcome to Standex Electronics Reed Relay training module. This module will define key terms used in reed relays and their applications. The module will also describe the structure and function of reed relays and their vast number of applications.

Product Training Module – Magnet Technology & Their Uses

Welcome to Standex Electronics where we will be exploring what magnets are and how they are used in the electronic industry. We will define the key terms relating to magnets and we will explore what magnets are, what they do, and how they are used.

Product Training Module – Latching Form B Reed Relays & Sensors

Welcome to Standex Electronics' Latching and Form B Reed Relay and Sensor training module. This module will define key terms of Form B and Latching sensors and relays. The module will also describe the structure and function of latching and Form B reed relays and sensors.

How a Reed Switch Works

The Reed Switch is the core element in Reed Sensors, Level Sensors and Reed Relays. A magnetic contact switch consisting of two ferromagnetic blades are hermetically sealed inside a glass tube. The glass tube is filled with a high purity inert gas. Under non operating conditions the reed switch contacts do not touch. Standex Electronics is leading the way in reed switch manufacturing...

How Reed Switches are Manufactured

Ultra miniature and high precision Reed Switch manufacturing in the most modern factory of its kind. Standex Electronics micro technology enables the mass production of Reed Switches at the highest quality for competitive pricing. The complete process from the sputtering of the magnetic contacts through the hermetic sealing and final testing...

Reed Switch Technology

Standex Electronics expert discusses reed switch technology and why reed switches play such an important role in many applications.

3D Magnetic Mapping for Sensor Applications

Standex Electronics's technical expert describes their 3D Magnetic Mapping capabilities used in reed sensor applications

Reed Switch SMD Sensor & Magnet Actuation in 3-D

A Reed Switch Sensor on a surface mount PCB assembly shown in 3-D with actuating magnet. When viewed in three dimensions, the magnetic flux lines emanating from the magnet look like a beer barrel keg; and also in three dimensions, with the magnet parallel to the reed switch, the center magnetic lobe array looks like a donut and the two outside lobes look more like a boxer's punching bag -- the kind hung from the ceiling. Essentially the fields from the magnet and the fields for the lobes are symmetrical when viewed in three dimensions. As seen in two dimensions, when the magnet is brought into one of the lobes the reed switch contacts will close. Now, as seen in three dimensions the magnet can be brought into the lobes in any spherical direction for contact closure to occur. Here the magnet is moved into the sphere of influence of the lobes of the reed switch showing the closure and opening when the magnet enters the lobes and passes through them, The change in lighting signifies the closing and opening of the reed switch contacts.

Como se Fabrica un Ampolla Reed (ES)

Construir los interruptores de lengüeta no es ningún trabajo fácil. Ser la fábrica más moderna de su clase en Europa, nuestra producción en Turingia es un mundo de ellos mismos. El tamaño de estos componentes de alta precisión es extremadamente reducido, la capa ultrafina y el trabajo meticuloso se requieren en cada paso de la producción. Esta microtecnología permite la producción en masa de los productos de alta calidad a precios competitivos.

Standex Electronics at AHR Expo 2013

Alex Vinnage talks about what attendees can expect from Standex Electronics at the 2013 AHR Expo.

Linea de Productos Standex Electronics (ES)

Los Interruptores de Lengüeta, Relés de Lengüeta y Sensores de Lengüeta son nuestros productos más importantes. Estos tres grupos tienen una cosa en común: el Interruptor de Lengüeta es el elemento núcleo de todos ellos. Los Interruptores de Lengüeta so dispositivos operados magnéticamente, que han sido inventados por Laboratorios Bell a principios de los años 1940' en Estados Unidos. Funcionan con un principio simple:Dos hojas ferromagnéticas traslapadas de hierro se sellan en un tubo de cristal, separados por una distancia de solamente unos pocos micrones...

Comment fonctionnent les Ampoules Reed (FR)

Les ampoules Reed, les relais Reed et les capteurs Reed sont nos produits les plus importants. Ces trois groupes ont une chose en commun: l'ampoule Reed, « au cœur » de tous ces produits.. Les ampoules Reed sont des appareils activés magnétiquement, qui furent inventés par Bell Labs aux Etats-Unis dans les années 1940. Ils fonctionnent selon un principe simple: Deux lames ferromagnétiques qui se chevauchent , sont scellées dans un tube de verre, séparées par une distance de quelques microns seulement...

Comment sont fabriquées les Ampoules Reed (FR)

Fabriquer des ampoules Reed n'est pas un travail facile. Etant l'usine la plus moderne dans son genre en Europe, notre production de Thuringe est « dans un autre monde » . La taille de ces composants à haute précision est extrêmement petite, l'enduit ultra-mince, un travail méticuleux est exigé dans chaque étape de production. Cette micro technologie permet la production en série de produits de qualité aux prix concurrentiels...

Benvenuti in MEDER (IT)

Molto spesso sono le cose più piccole ad avere l'impatto maggiore nella nostra vita. A volte non le percepiamo neanche, anche se rendono la nostra vita più confortevole e sicura. Sono utilizzate in veicoli, ingegneria della sicurezza, elettrodomestici, dispositivi medici, telecomunicazione e sistemi industriali di ogni tipo. Precisi, affidabili e di lunga durata. Questi interruttori reed, sensori e relè miniaturizzati lavorano instancabilmente secondo la legge di Reed. Anche se a prima vista sembrano semplici, sono in realtà delle vere e proprie meraviglie dell'ingegneria che solo poche aziende al mondo sono in grado di produrre. E noi siamo una di esse: MEDER electronic. Prodotti innovativi per il futuro...

Gamma di prodotti Standex Electronics (IT)

Interruttori reed, relè reed e sensori reed sono i nostri prodotti più importanti. Queste tre categorie di prodotti hanno una cosa in comune: l'ampolla reed, che è il loro elemento centrale. Le Ampolle reed sono dispositivi azionati magneticamente, che furono inventati nei primi anni '40 negli Stati Uniti, nei laboratori Bell. Funzionano secondo un principio molto semplice: due lame di materiale ferromagnetico sono ermeticamente sigillate all'interno di un tubo di vetro...


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