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Relay Modules

Control circuits often use relay modules to manage the electrical signals exchanged among devices. A relay module sits between the control signal circuitry and the devices controlled by the circuit, isolating and switching them on and off in whatever sequence is required. They offer two real advantages. First, they are well-isolated from the control circuit's electrical signals, which enhances safety. And second, they can handle all sorts of voltages and currents—up to several hundred volts and several amperes.

Relay modules allow for the smooth functioning of more than one relay in a single system, which is mostly the case in industrial and automated applications. When you need to control big equipment, or if you're doing something with process controls and you need to switch between circuits, relay modules make that happen. They even give you feedback about the circuit's state so you know whether it's on or off.

Found 195 items
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Found 195 items
Manufacturer
IDEC (19)
Phoenix Contact (27)
Weidmuller (149)
Component
Multi-Channel Solid-State Relay Modules (1)
PLC Logic Basic Module (2)
Power Module (9)
Protection Module (2)
Relay Extension Modules (4)
Relay Module (158)
Relay Poles
Single Pole (42)
Double Pole (73)
Three Pole (5)
Four Pole (27)
Relay Throws
Double Throw (147)
2 NO (2)
2 NO-1 NC (2)
3 NO (4)
3 NO-1 NC (2)
Coil Voltage Rating
0-30 Volt (3)
110 VDC (8)
110-127 Volt (2)
115 VAC (28)
12 VDC (4)
12-24 Volt (2)
220 VDC (4)
220-277 Volt (2)
230 VAC (34)
24 VAC (32)
Relay Indication
Green LED (56)
Red LED (91)
Relay Load Voltage AC Rating
120 VDC (1)
230 VDC (2)
24 VDC (3)
Relay UL Rating
10 Amp (1)
17 Mamp (1)
18 Mamp (1)
6Mamp -7Mamp (1)
8.5 Mamp - 10 Mamp (2)
Relay Input Amperage
10 Amp (43)
12 Amp (9)
16 Amp (20)
30 Mamp (1)
40 Mamp (2)
5 Amp (38)
6 Amp (15)
8 Amp (22)
Relay Application
Extension Module (1)
Input Function (1)
Input Function Analog Input (1)
Output Function Analog Output (1)
Temperature Input (1)
Relay Connection Type
Insulation Displacement Connection (2)
Micro USB Type B (2)
Plug-In Connection (2)
Push-In Connection (69)
Push-In Terminal (6)
Screw Connection (86)
Screw Terminal (6)
S-PORT (Socket) (2)
Spring-Cage Connection (1)
Tension Clamp Connection (6)
Relay Contact Material
Agni (101)
Agsno (44)
Relay Mounting
Din Rail (169)
Relay Number of Channels
4 (1)
Series
HR5S Series (7)
HR6S Series (12)
Normally In Stock
Phoenix Contact 1550107 Relay module RIF-0-RPT-24DC/21/MS
Free U.S Ground shipping
$17.98
$14.98
Normally In Stock
Phoenix Contact 1328357 Relay module PLC-RSC- 24DC/1/CB1-6
Free U.S Ground shipping
$67.39
$56.16
Normally In Stock
Phoenix Contact 1328360 Relay module PLC-RPT- 24DC/1/CB1-6
Free U.S Ground shipping
$67.39
$56.16
Normally In Stock
Phoenix Contact 1739922 Relay module RIF-1-RPT-LDP-24DC/2X21/AU/FG
Free U.S Ground shipping
$63.40
$52.83
Normally In Stock
Phoenix Contact 2944407 Relay module EMG 22-REL/KSR-G 24/TRN24/SO62
Free U.S Ground shipping
$174.78
$145.65
Normally In Stock
IDEC HR6S-S1P HR6S Series 2 NO, 24 VAC/DC
Free U.S Ground shipping
$327.42
$272.85
Normally In Stock
IDEC HR6S-S1C HR6S Series 2 NO, 24 VAC/DC
Free U.S Ground shipping
$381.98
$318.32
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IDEC HR6S-DN1P HR6S Series 3 NO-1 NC, 24 VAC/DC
Free U.S Ground shipping
$573.76
$478.13
Normally In Stock
IDEC HR6S-DN1C HR6S Series 3 NO-1 NC, 24 VAC/DC
Free U.S Ground shipping
$628.33
$523.61
Normally In Stock
IDEC HR6S-AT1P HR6S Series 3 NO, 24 VAC/DC
Free U.S Ground shipping
$639.25
$532.71
Normally In Stock
IDEC HR6S-AT1C HR6S Series 3 NO, 24 VAC/DC
Free U.S Ground shipping
$693.83
$578.19
Normally In Stock
IDEC HR6S-AK1P HR6S Series 2 NO-1 NC, 24 VAC/DC
Free U.S Ground shipping
$541.02
$450.85
Normally In Stock
IDEC HR6S-AK1C HR6S Series 2 NO-1 NC, 24 VAC/DC
Free U.S Ground shipping
$595.60
$496.33
Normally In Stock
IDEC HR6S-AF1P HR6S Series 3 NO, 24 VAC/DC
Free U.S Ground shipping
$319.64
$266.37
Normally In Stock
IDEC HR6S-AF1C HR6S Series 3 NO, 24 VAC/DC
Free U.S Ground shipping
$374.21
$311.84
Normally In Stock
IDEC HR6S-AB1P HR6S Series, 24 VAC/DC
Free U.S Ground shipping
$232.31
$193.59
Normally In Stock
IDEC HR6S-AB1C HR6S Series, 24 VAC/DC
Free U.S Ground shipping
$286.88
$239.07
Normally In Stock
IDEC HR5S-C2S HR5S Series
Free U.S Ground shipping
$246.34
$205.28
Normally In Stock
IDEC HR5S-C2D-T400 HR5S Series
Free U.S Ground shipping
$514.51
$428.76
Normally In Stock
IDEC HR5S-C2D-T200 HR5S Series
Free U.S Ground shipping
$514.51
$428.76
Normally In Stock
IDEC HR5S-C2D-T100 HR5S Series
Free U.S Ground shipping
$514.51
$428.76
Normally In Stock
IDEC HR5S-C2D-T050 HR5S Series
Free U.S Ground shipping
$514.51
$428.76
Normally In Stock
IDEC HR5S-C2D-T025 HR5S Series
Free U.S Ground shipping
$514.51
$428.76
Normally In Stock
IDEC HR5S-C2B HR5S Series
Free U.S Ground shipping
$277.52
$231.27
Normally In Stock
Phoenix Contact 1148699 Relay module RIF-RPT-LDP-24DC/2X2/2X1/AU/FG
Free U.S Ground shipping
$80.58
$67.15
Normally In Stock
Phoenix Contact 1148703 Relay module RIF-RPT-LDP-24DC/1X2/3X1/AU/FG
Free U.S Ground shipping
$80.58
$67.15
Normally In Stock
Phoenix Contact 1136242 Relay module PLC-RPT-230UC/21HC/SO46
Free U.S Ground shipping
$30.50
$25.42
Normally In Stock
Phoenix Contact 1136245 Relay module PLC-RPT-230UC/21-21/SO46
Free U.S Ground shipping
$30.50
$25.42
Normally In Stock
Phoenix Contact 1136244 Relay module PLC-RPT-120UC/21-21/SO46
Free U.S Ground shipping
$36.04
$30.03
Normally In Stock
Phoenix Contact 1078683 Relay module PLC-RPT- 24DC/ 1ICT/ACT
Free U.S Ground shipping
$36.04
$30.03
Normally In Stock
Weidmuller 8921150000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$56.83
$47.36
Normally In Stock
Weidmuller 8921140000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$54.86
$45.72
Normally In Stock
Weidmuller 8921130000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$57.55
$47.96
Normally In Stock
Weidmuller 8921120000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$57.55
$47.96
Normally In Stock
Weidmuller 8921110000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$52.58
$43.82
Normally In Stock
Weidmuller 8921100000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$59.76
$49.80
Normally In Stock
Weidmuller 8921090000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$50.21
$41.84
Normally In Stock
Weidmuller 8921080000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$54.56
$45.47
Normally In Stock
Weidmuller 8921060000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$53.46
$44.55
Normally In Stock
Weidmuller 8921050000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$38.47
$32.06
Normally In Stock
Weidmuller 8921040000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$39.38
$32.82
Normally In Stock
Weidmuller 8921030000 Relay Module 4PDT 6 Amp
Free U.S Ground shipping
$34.42
$28.68
Normally In Stock
Weidmuller 8921020000 Relay Module 3PDT 10 Amp
Free U.S Ground shipping
$56.83
$47.36
Normally In Stock
Weidmuller 8921010000 Relay Module 3PDT 10 Amp
Free U.S Ground shipping
$37.40
$31.17
Normally In Stock
Weidmuller 8920990000 Relay Module 3PDT 10 Amp
Free U.S Ground shipping
$46.64
$38.87
Normally In Stock
Weidmuller 8920980000 Relay Module 3PDT 10 Amp
Free U.S Ground shipping
$33.86
$28.22
Normally In Stock
Weidmuller 8920970000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$53.76
$44.80
Normally In Stock
Weidmuller 8920960000 Relay Module 2PDT 12 Amp
Free U.S Ground shipping
$36.46
$30.38

More Information about Relay Modules

Relay modules are needed in places where precise electrical control is essential. You can find them in automated test equipment, control cabinets, and security systems—about anything that needs electrical control and cannot afford to have anything but consistent performance. They are not very different from relays. They offer compact design, long life, and reliable operation without wear. If you consider that all of the properties of relay modules are essential in the environments in which they're used, then you can conclude that they are indispensable. Whether relay modules are necessary because of modern design or electricity's control properties, they are used widely in industry and commerce.

FAQs

How does a relay module work with switch electrical devices, electromechanical relays and solid state relays?

A relay module works by using control signals to activate electromechanical or solid-state relays, which then switch electrical devices on or off by completing or breaking circuits with precision and electrical isolation.

How to select the right relay module function for working with control devices like multiple relays?

To select the right relay module function for working with control devices like multiple relays, consider factors such as the required input voltage rating, control circuit compatibility, number of channels, and the specific switching configuration needed for your application.

Is a relay module considered an electrical switch?

Yes, a relay module can be considered an electrical switch. A relay module is designed to provide a convenient and reliable means of controlling the flow of electrical current to a load or circuit.

What is Relay Logic?

In most of today's modern electrical control scenarios, it is common to see some kind of controller or PLC that is monitoring the state of certain electrical components and providing control over several electrical circuits. This controller has the ability to process the information coming in and send output commands in response. This is all done using some kind of programming language, like ladder logic. However, before controllers were widely used, or in situations where the functions of the electrical circuits were quite simple, relay logic was used.  

So what is relay logic? Relay logic consists of relays wired up in a particular fashion to perform various switching operations to one or many different electrical circuits. The method in which the relays are wired will impact the overall function of the control that is provided. Relay logic circuits use a combination of relays and other components such as switches, motors, timers, actuators, contactors, lights and many other types of electrical hardware. Relay logic control uses basic ON/OFF functionality, which is quite simple, but can perform very complex control tasks depending on how many relays are used and the configuration of the wiring.  

This type of control uses different parts of the relays for different functions.  For example, the coil portion of the relay can be used as a discrete input point. When the coil receives voltage, it will perform a switching operation.  Depending on the relay, this might mean the relay switches just one circuit or it could switch many circuits. This switching can then control other relay coil inputs or it might turn on a light or motor. It all depends on the need of the control circuit.