Relays

Relays are electromagnetic switches powered by a relatively small current and thanks to their structure they can both switch off or amplify a much larger current. They have been largely used in the telecom industry since the 19th century, as well as in the industrial and automotive sectors. Their application has now extended to computing and medical research, making relays a fundamental component for devices used in everyday life.

How does a general purpose relay work?

Relays work based on electromagnetic force. The core of a relay is made of a coil of wire (commonly copper, which is low-resistance and facilitates power transmission) which becomes a magnet when it receives an electric current.

They work as a bridge between devices, receiving an input signal from the first one and transmitting an output to the second. The electromagnetic current generated by the electrical input from the first device on the relay causes the contacts to open or close, determining the transmission or the blockage of the electrical signal to the second device.

What is a general purpose relay used for?

There are different kinds of relays suited for different applications:

  • Latching relays: they can be operated by a magnetic or mechanical system, and can feature a single or a double-winding coil. Their position stays where it was when the circuit was last powered. They're commonly used to operate automatic doors and gates, as well as in lighting.
  • Non latching relays: differ from how latching relays work as non-latching relays go back to their initial position when the power is removed from the circuit. Normally found in push-button applications such as keyboards.
  • High frequency and RF relays: most commonly used in radio system, computing, testing and industrial equipment where high voltages are involved and standard relays cannot support an efficient function. An example of application is in radio devices: relays separate the circuits responsible for receiving and transmitting high frequency signals.

Whatever the relay is you are looking for, we offer a broad range from the most trusted suppliers worldwide, such as Panasonic, Omron, TE Connectivity and our very own RS Pro.

Automotive Relays
Automotive Relays
Earth Leakage Relays
Earth Leakage Relays
Electromechanical Interface Relays
Electromechanical Interface Relays
Force Guided Relays
Force Guided Relays
HF & RF Relays
HF & RF Relays
Monitoring Relays
Monitoring Relays
Power Relays
Power Relays
Reed Relays
Reed Relays
Safety Relays
Safety Relays
Signal Relays
Signal Relays
Solid State Interface Relays
Solid State Interface Relays
Solid State Relays
Solid State Relays
Timer Relays
Timer Relays

17699 Produits présentés pour Relays

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1 sur 885
En stock
Omron PCB Signal Relay, 24V dc Coil, 2A, SPDT
  • N° de stock RS 369-365
  • Référence fabricant G5V-1 DC24
Sous-total (1 unité)
3,18 €(TVA exclue)
3,18 €/unité
En stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 8A Switching Current, DPDT
  • N° de stock RS 508-0023
  • Référence fabricant 2961192
Sous-total (1 unité)
4,84 €(TVA exclue)
4,84 €/unité
En stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 6A Switching Current, SPDT
  • N° de stock RS 290-1416
  • Référence fabricant 2961105
Sous-total (1 unité)
7,83 €(TVA exclue)
7,83 €/unité
En stock
Lovato TM ST Series DIN Rail Timer Relay, 2-Contact, 24 to 48 V dc 380V ac, 440 V ac, 0.1 s to 10 min, 1-Function, DPST
  • N° de stock RS 905-3485
  • Référence fabricant TMSTA440
Sous-total (1 unité)
86,90 €(TVA exclue)
86,90 €/unité
Temporairement en rupture de stock
Schneider Electric Harmony Relay Series Solid State Relay, 6 A Load, DIN Rail Mount, 280 V ac Load, 32V dc Control
  • N° de stock RS 922-1925
  • Référence fabricant SSM1A16BDR
Sous-total (1 unité)
40,00 €(TVA exclue)
40,00 €/unité
En stock
TE Connectivity SSR3 Series Solid State Relay 3 Phase, 40 A Load, Panel Mount, 480 Vrms Load, 32V Control
  • N° de stock RS 248-6832
  • Référence fabricant SSR3TR-480D40
Sous-total (1 unité)
140,23 €(TVA exclue)
140,23 €/unité
En stock
Omron PCB Signal Relay, 4.5V dc Coil, 1A, DPDT
  • N° de stock RS 365-0434
  • Référence fabricant G6K-2P-Y 4.5DC
Sous-total (1 unité)
6,85 €(TVA exclue)
6,85 €/unité
En stock
Finder Power Relay, 24V dc Coil, 7A Switching Current, 4PDT
  • N° de stock RS 385-929
  • Référence fabricant 55.34.9.024.0040
Sous-total (1 unité)
11,28 €(TVA exclue)
11,28 €/unité
En stock
Finder PCB Power Relay, 12V ac Coil, 8A Switching Current, DPDT
  • N° de stock RS 708-3138
  • Référence fabricant 40.52.8.012.0000
Sous-total (1 unité)
7,62 €(TVA exclue)
7,62 €/unité
En stock
TE Connectivity PCB Power Relay, 18V dc Coil, 8A Switching Current, SPDT
  • N° de stock RS 680-4088
  • Référence fabricant RY212018
Sous-total (1 unité)
4,50 €(TVA exclue)
4,50 €/unité
En stock
Finder PCB Non-Latching Relay, 230V Coil, 30A Switching Current, 2 NO
  • N° de stock RS 652-973
  • Référence fabricant 66.82.8.230.1300
Sous-total (1 unité)
16,44 €(TVA exclue)
16,44 €/unité
En stock
RS PRO DIN Rail Timer Relay, 1-Contact, 24 V dc 12V ac, 240 V ac, 0.1 s to 100 h, Multifunction-Function, SPDT Switch
  • N° de stock RS 896-6826
Sous-total (1 unité)
59,78 €(TVA exclue)
59,78 €/unité
En stock
Finder Socket Power Relay, 24V dc Coil, 7A Switching Current, 4PDT
  • N° de stock RS 182-9939
  • Référence fabricant 55.34.9.024.0090
Sous-total (1 unité)
13,05 €(TVA exclue)
13,05 €/unité
En stock
Finder Power Relay, 48V dc Coil, 7A Switching Current, 4PDT
  • N° de stock RS 189-3229
  • Référence fabricant 55.34.9.048.0040
Sous-total (1 unité)
13,22 €(TVA exclue)
13,22 €/unité
En stock
Pilz PNOZ X7, 230V ac Safety Relay, 2 Safety Contacts, 1
  • N° de stock RS 324-7268
  • Référence fabricant 774056
Sous-total (1 unité)
168,84 €(TVA exclue)
168,84 €/unité
En stock
Omron Non-Latching Relay, 21V dc Coil, 6A Switching Current, SPDT
  • N° de stock RS 230-5174
  • Référence fabricant G2RV-1-S-G DC21
Sous-total (1 unité)
14,12 €(TVA exclue)
14,12 €/unité
En stock
Gefran GRS-H Series Solid State Relay, 120 A Load, DIN Rail Mount, 480 V ac Load, 32V Control
  • N° de stock RS 221-7477
  • Référence fabricant F083582/ GRS-H-120-48-D-0-FAN60-0-0
Sous-total (1 unité)
265,53 €(TVA exclue)
265,53 €/unité
Dernier stock RS
Omron G3RV-SR Solid State Interface Relay 18V dc, 30 V dc DIN Rail Push-in
  • N° de stock RS 111-3010
  • Référence fabricant G3RV-SR500-D DC24
Sous-total (1 unité)
44,45 €(TVA exclue)
44,45 €/unité
En stock
Crydom PF Series Solid State Relay, 25 A Load, PCB Mount, 280 Vrms Load, 15V Control
  • N° de stock RS 394-462
  • Référence fabricant PF240D25
Sous-total (1 unité)
35,21 €(TVA exclue)
35,21 €/unité
En stock
Hongfa Europe GMBH Surface Signal Relay, 12V dc Coil, 2A, DPDT
  • N° de stock RS 176-2965
  • Référence fabricant HFD4/12-S
Sous-total (1 paquet de 2 unités)
6,80 €(TVA exclue)
3,40 €/unité
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