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

16690 Produits présentés pour Relays

1 sur 835
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)
En stock
Phoenix Contact PLC-OSC- 24DC/24DC/2 Series Solid State Relay, DIN Rail Mount, 300 V Load, 300V Control
  • N° de stock RS 306-6558
  • Référence fabricant 2966634
Sous-total (1 unité)
28,55 €(TVA exclue)
Temporairement en rupture de stock
Siemens Monitoring Relay, 1 Phase, SPDT, DIN Rail, 24 V dc 24 V ac
  • N° de stock RS 233-7606
  • Référence fabricant 3RS2500-1AW30
Sous-total (1 unité)
237,35 €(TVA exclue)
En stock
Better World
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)
Temporairement en rupture de stock
Phoenix Contact DEK-OE- 12DC/48DC/100 Series Solid State Relay, DIN Rail Mount, 300 V Load, 300V Control
  • N° de stock RS 801-8084
  • Référence fabricant 2964487
Sous-total (1 unité)
40,02 €(TVA exclue)
En stock
Phoenix Contact PLC-RSC-24DC/21 Series Interface Relay, DIN Rail, 24V dc Coil, SPDT, 9mA
  • N° de stock RS 358-8301
  • Référence fabricant 2966171
Sous-total (1 unité)
11,84 €(TVA exclue)
En stock
Better World
Schneider Electric Power Relay, 24V ac Coil, 5A Switching Current, DPDT
  • N° de stock RS 852-6834
  • Référence fabricant RXG22B7
Sous-total (1 unité)
11,18 €(TVA exclue)
Temporairement en rupture de stock
Phoenix Contact DEK-OV- 24DC/24DC/3 Series Solid State Relay, DIN Rail Mount, 300 V Load, 300V Control
  • N° de stock RS 533-0025
  • Référence fabricant 2941374
Sous-total (1 unité)
59,56 €(TVA exclue)
En stock
Finder Relay, 12V dc Coil, 7A Switching Current, 4PDT
  • N° de stock RS 385-913
  • Référence fabricant 55.34.9.012.0040
Sous-total (1 unité)
10,74 €(TVA exclue)
En stock
Schneider Electric PCB Power Relay, 24V dc Coil, 16A Switching Current, SPDT
  • N° de stock RS 742-3738
  • Référence fabricant RSB1A160BD
Sous-total (1 unité)
6,46 €(TVA exclue)
En stock
Pilz PNOZ s4, 24V dc Safety Relay, 3 Safety Contacts, 1
  • N° de stock RS 156-106
  • Référence fabricant 750104
Sous-total (1 unité)
267,61 €(TVA exclue)
En stock
WAGO 857 Series Solid State Relay, 3 A Load, DIN Rail Mount, 24 V dc Load, 31.2V dc Control
  • N° de stock RS 180-3049
  • Référence fabricant 857-724
Sous-total (1 unité)
41,51 €(TVA exclue)
En stock
Finder 34 Series Solid State Relay, 6 A Load, PCB Mount, 24 V dc Load, 30V Control
  • N° de stock RS 457-2868
  • Référence fabricant 34.81.7.024.9024
Sous-total (1 unité)
27,02 €(TVA exclue)
En stock
Carlo Gavazzi Power Relay, 60V dc Coil, 10A Switching Current, 3PDT
  • N° de stock RS 272-5977
  • Référence fabricant RCP1100360VDC
Sous-total (1 unité)
13,89 €(TVA exclue)
En stock
Phoenix Contact RIF-0-RPT-24DC/21 Series Interface Relay, DIN Rail, 24V dc Coil, SPDT
  • N° de stock RS 794-3771
  • Référence fabricant 2903370
Sous-total (1 unité)
9,54 €(TVA exclue)
En stock
Omron G9SE, 24V dc Safety Relay, 2 Safety Contacts
  • N° de stock RS 265-5203
  • Référence fabricant G9SE-201 DC24
Sous-total (1 unité)
161,20 €(TVA exclue)
En stock
Schneider Electric Harmony Relay RSB Series Interface Relay, DIN Rail, 24V ac Coil, DPDT
  • N° de stock RS 203-5243
  • Référence fabricant RSB2A080B7PV
Sous-total (1 unité)
17,18 €(TVA exclue)
En stock
Pilz PNOZ s1 C, 24V dc Safety Relay, 2 Safety Contacts, 1
  • N° de stock RS 191-9852
  • Référence fabricant 751101
Sous-total (1 unité)
168,29 €(TVA exclue)
En stock
Fujitsu PCB Power Relay, 24V dc Coil, 16A Switching Current, SPDT
  • N° de stock RS 790-3344
  • Référence fabricant FTR-K1CK024W
Sous-total (1 unité)
2,99 €(TVA exclue)
En stock
Finder 38 Series DIN Rail Timer Relay, 1-Contact, 60 V dc 24V ac, 0.1 s to 6 h, Multifunction-Function, SPDT Switch
  • N° de stock RS 666-7946
  • Référence fabricant 38.21.0.024.0060
Sous-total (1 unité)
44,91 €(TVA exclue)
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