Comment un interrupteur Reed fonctionne-t-il?

Un interrupteur Reed ou interrupteur à lames souples est un bipôle magnétique dont les deux contacts sont en alliage fer-nickel, souvent protégés par une couche d’or et de zinc, magnétisés et placés dans une bulle de verre contenant du diazote en général pour éviter l’oxydation.

En présence d’un champ magnétique, les contacts s’aimantent et sont attirés l’un par l’autre. Ils se rapprochent jusqu’à se toucher pour établir le courant. Lorsque le champ magnétique cesse, l’aimantation cesse également et les contacts retrouvent leur position initiale. Au repos, les 2 contacts sont éloignés d’une dizaine de micromètres environ.

Il existe aussi des interrupteurs bi-contacts qui permettent de déterminer le sens du champ magnétique.

Les interrupteurs REED sont particulièrement appéciés pour leur durée de vie et leur fiabilité : on considère qu’un tel interrupteur peut effectuer de l’ordre de 10 millions de cycles ouverture/fermeture.

faq1_en

Quels sont les avantages des commutateurs Reed?

  • Commutation sans contact
  • Fortement économique
  • Aucun courant d’alimentation requis
  • Aucun courant de commutation minimum nécessaire (sauf, par exemple, pour les matériaux de contact en tungstène)
  • Fiabilité de la commutation élevée
  • Faible résistance de contact (0.07 à 0.2 Ohms initiale)
  • Adaptés à un environnement rude et application ATEX, puisque les contacts sont hermétiquement scellés
  • Des milliards d’opérations sur les charges de signaux pendant toute la durée de vie

Capteurs Reed

Part Number Description
MS-313-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 12.7 x 9.9 x 3.5
MS-313R-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 12.7 x 9.9 x 3.5
MS-324-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324R-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324R-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324R-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 23 x 13.9 x 5.9
MS-324R-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 23 x 13.9 x 5.9
MS-328-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 28.5 x 19 x 6.3
MS-328-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 28.5 x 19 x 6.3
MS-328-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 23 x 13.9 x 5.9
MS-328-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 28.5 x 19 x 6.3
MS-328-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 28.5 x 19 x 6.3
MS-332-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 33 x 10 x 6
MS-332-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 33 x 10 x 6
MS-332-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 33 x 10 x 6
MS-332-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 33 x 10 x 6
Part Number Description
MS-2431-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 31 x 9.3
MS-2431-4Contact form C
Power: 3 W
Switching Voltage: 30 VDC
Dimensions: 31 x 9.3
MS-2431-7Contact form B
Power: 3 W
Switching Voltage: 30 VDC
Dimensions: 31 x 9.3
Part Number Description
MS-320-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 20 x 11 x 6
MS-390-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 27 x 8 x 8
MS-390-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 27 x 8 x 8
MS-390-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 27 x 8 x 8
Part Number Description
MKContact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 12 x 6 x 4.3
MS-104-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 11.4 x 2.7 x 2.8
MS-105-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 14.4 x 2.8 x 3.2
MS-106-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 17 x 2.8 x 3.2
MS-107-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 19.7 x 2.8 x 3.2
MS-108-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 22.3 x 3.3 x 4.2
MS-108-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 22.3 x 3.3 x 4.2
MS-108-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 22.3 x 3.3 x 4.2
MS-110XNo photo availableContact form E
Power: 5 W
Switching Voltage: 140 VDC
Dimensions: 29 x 3.8 x 5.7
Part Number Description
MS-208-3Contact form A
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 9 x 3
MS-209-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 10 x 3 / 2.7
MS-210-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 12.7 x 3.8
MS-211-3Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 12.2 x 3.8
MS-213-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 18 x 3.8
MS-214-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 25.2 x 3.8
MS-215-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 25.7 x 6
MS-215-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 25.7 x 6
MS-215-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 25.7 x 6
MS-215-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 25.7 x 6
MS-216-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 25.2 x 5.6
MS-216-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 25.2 x 5.6
MS-216-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 25.2 x 5.6
MS-216-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 25.2 x 5.6
MS-217-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 40.1 x 6
MS-217-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 40.1 x 6
MS-217-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 40.1 x 6
MS-217-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 40.1 x 6
MS-217-7Contact form A
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 40.1 x 5.6
PRX+1500Contact form A
Power: 1 W
Switching Voltage: 30 VDC
Dimensions: 12.2 x 2.41
Part Number Description
MS-2210M-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 9.5
MS-2210M-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 38 x 9.5
MS-2212M-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 11.5
MS-2212M-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 38 x 11.5
MS-225-3Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 24.9 x 4.8
MS-226M-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 5.5
MS-228-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 7.7
MS-228-4Contact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 38 x 7.7
MS-228-5Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 7.7
MS-228-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 38 x 7.7 x 6
MS-228-7Contact form B
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 38 x 7.7
MS-228M-3Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 38 x 7.8
MS-228M-6Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 38 x 7.8

Interrupteurs Reed

Part Number Description
HSR-0025RTContact form A
Power: 0.25 W
Switching Voltage: 30 VDC
Dimensions: 4.32 x 0.97 x 1.27
HSR-0035RTContact form A
Power: 1 W
Switching Voltage: 30 VDC
Dimensions: 5.08 x 1.4
HSR-502Contact form C
Power:3 W
Switching Voltage: 30 VDC
Dimensions: 8 x 2.4
PMC-0701Contact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 7 x 1.8
Part Number Description
PMC-1001Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 10 x 1.8
PMC-1401Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-1402Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-1496BContact form C
Power: 20 W
Switching Voltage: 150 VDC
Dimensions: 14.5 x 2.2
PMC-1496SContact form C
Power: 20 W
Switching Voltage: 150 VDC
Dimensions: 14.5 x 2.2
PMC-1515Contact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 15.3 x 2.3
PMC-1601Contact form A
Power: 10 W
Switching Voltage: 100 VDC
Dimensions: 16.5 x 2.5
PMC-2003Contact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 21 x 3
TRH-200BContact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 14.8 x 2.7
TRH-200SContact form C
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 14.8 x 2.7
Part Number Description
CRH-500Contact form C
Power: 60 W
Switching Voltage: 500 VDC
Dimensions: 39.7 x 5.4
HSR-634WTContact form C
Power: 100 W
Switching Voltage: 120 VDC
Dimensions: 34.3 x 5.33
HSR-834WTContact form C
Power: 100 W
Switching Voltage: 500 VDC
Dimensions: 34.3 x 5.33
PMC-2021Contact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 20 x 2.54
PMC-3617Contact form C
Power: 60 W
Switching Voltage: 400 VDC
Dimensions: 36 x 5.6
PMC-5001Contact form A
Power: 120 W
Switching Voltage: 250 VDC
Dimensions: 50 x 5.4
PMC-5002Contact form A
Power: 250 W
Switching Voltage: 250 VDC
Dimensions: 50 x 5.4
PMC-5025Contact form C
Power: 60 W
Switching Voltage: 230 VDC
Dimensions: 52 x 5.6
Part Number Description
HSR-V10KContact form A
Power: 50 W
Switching Voltage: 5000 VDC
Dimensions: 53.4 x 5.4
HSR-V15KContact form A
Power: 50 W
Switching Voltage: 6000 VDC
Dimensions: 53.4 x 5.4
HSR-V207Contact form A
Power: 200 W
Switching Voltage: 3500 VDC
Dimensions: 53.4 x 5.4
HSR-V7KContact form A
Power: 50 W
Switching Voltage: 4000 VDC
Dimensions: 53.4 x 5.4
PMC-1401XContact form E
Power: 5 W
Switching Voltage: 140 VDC
Dimensions: 14.2 x 3 x 4.8
PMC-5002XContact form E
Power: 150 W
Switching Voltage: 230 VDC
Dimensions: 50 x 6.2 x 9.8
PMC-5025XContact form E
Power: 40 W
Switching Voltage: 200 VDC
Dimensions: 52 x 6 x 9.5

Interrupteurs SMD Reed

Part Number Description
PMC-0701SContact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 7 x 1.8
PMC-1001SContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 10 x 1.8
PMC-1401SContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-1402SContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-1424SContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-1428SContact form A
Power: 10 W
Switching Voltage: 100 VDC
Dimensions: 14.2 x 2.3
PMC-2021SContact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 20 x 2.54
Part Number Description
HSR-0025TSMContact form A
Power: 0.25 W
Switching Voltage: 30 VDC
Dimensions: 6.1 x 1.27 x 1.27
PMC-0701TSContact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 9.8 x 2 x 2.3
PMC-1001TContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 16 x 2 x 2.3
PMC-1001TSContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 12.8 x 2 x 2.3
PMC-1401TContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 19.5 x 2.3 x 2.5
PMC-1401TSContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 18.3 x 2.3 x 2.5
PMC-1424TContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 19.5 x 3 x 2.5
PMC-1424TSContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 18.4 x 3 x 2.5
PMC-1428TContact form A
Power: 10 W
Switching Voltage: 100 VDC
Dimensions: 19.5 x 3 x 2.5
PMC-1428TSContact form A
Power: 10 W
Switching Voltage: 100 VDC
Dimensions: 18.4 x 3 x 2.5
PMC-2021TContact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 28.6 x 3 x 2.54
Part Number Description
PMC-0508THContact form A
Power: 5 W
Switching Voltage: 175 VDC
Dimensions: 6.5 x 2.3 x 2.9
PMC-0701THContact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 8.5 x 2.8 x 2.9
PMC-1001THContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 16.25 x 2.8 x 2.5
PMC-1001THLContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 19.5 x 2.9 x 2.8
Part Number Description
PMC-1001THYContact form B
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 19.6 x 3 x 3.5
PMC-1424THXContact form E
Power: 5 W
Switching Voltage: 140 VDC
Dimensions: 19.6 x 3.2 x 3.5
Part Number Description
PRX+2131Contact form A
Power: 1 W
Switching Voltage: 30 VDC
Dimensions: 8.51 x 1.8 x 2.34
PRX+2463Contact form A
Power: 0.25 W
Switching Voltage: 30 VDC
Dimensions: 5.33 x 1.57 x 1.52
Part Number Description
PMC-0701ZContact form A
Power: 10 W
Switching Voltage: 150 VDC
Dimensions: 7 x 1.8
PMC-1001ZContact form A
Power: 10 W
Switching Voltage: 180 VDC
Dimensions: 10 x 1.8
PMC-1401ZContact form A
Power: 10 W
Switching Voltage: 200 VDC
Dimensions: 14.2 x 2.3
PMC-2021ZContact form A
Power: 50 W
Switching Voltage: 200 VDC
Dimensions: 20 x 2.54