Signal Relays

Signal relays are a type of electrically operated mechanical switch. They are operated by electrical impulses with the primary function to open and close a circuit. Relays can also be referred to as industrial switches. There are 2 main types of relay category available, latching and non–latching relays.

Relays are used within PCBs for switching purposes. Signal relays are designed for low currents and low voltages. They can be used for up to 2A switching. Power relays are another type of relay which is suitable for high currents and voltages.

What is the difference between latching and non-latching relays?

Both types of relays in similar in design and function, however, a significant difference between them is that a latching relay will remain in the last position it when it was last powered, whereas a non-latching goes back to its normal position. This makes each more type of relay suitable for different applications.

How to choose a signal relay:

When choosing a relay, it is important to consider a number of specifications to ensure it is fit for purpose, some factors include:

  • Coil voltage - the required voltage to actuate the switching mechanism. If a voltage is too high this could damage the components, if it is too low then it will not actuate
  • Contact configuration - This is the state the contacts are in without power. For example SPST, single pole single throw
  • Contact material - the relay contacts are available in many materials that have certain properties. Common materials are gold, silver, tin oxide and nickel
  • Coil power - the amount of power (watts) the coil operates at. This must match the power in the circuit for correct function
  • Coil resistance - the amount of resistance (ohms) in the circuit that the coil creates

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Description Price Coil Voltage Contact Configuration Mounting Type Switching Current Maximum Switching Current AC Number of Coils Maximum Switching Current DC Maximum Switching Voltage AC Maximum Switching Voltage DC Maximum Switching Power DC Series Latching Length Depth
RS Stock No. 800-4514
BrandRS PRO
kr 34,03
Each
Units
24V dc DPDT PCB Mount 3A 3 A - 3 A 250V 220V 90 W G5V No 20.5mm 10.1mm
RS Stock No. 193-5849
BrandRS PRO
kr 841,56
Each
Units
24V dc DPDT PCB Mount 2A - - 2 A - 220V dc - TX2 No 15mm 7.4mm
RS Stock No. 193-5850
BrandRS PRO
kr 227,126
Each (In a Pack of 100)
Units
12V dc SPDT PCB Mount 3A 3 A - 3 A 250V ac 220V dc 60 W DS No 15mm 9.9mm
RS Stock No. 193-5859
BrandRS PRO
kr 700,285
Each (In a Pack of 100)
Units
12V dc SPDT PCB Mount 1A 1 A - 1 A 250V 220V 60 W Axicom P1 No 13mm 7.6mm
RS Stock No. 800-4536
BrandRS PRO
kr 40,77
Each
Units
24V dc DPDT PCB Mount 2A 2 A - 2 A 250V 220V 60 W Axicom P2 No 10mm 6.5mm
RS Stock No. 193-5851
BrandRS PRO
kr 230,96
Each
Units
24V dc SPDT PCB Mount 3A 3 A - 3 A 250V ac 220V dc 60 W DS No 15mm 9.9mm
RS Stock No. 476-725
BrandRS PRO
kr 26,20
Each
Units
12V dc DPDT PCB Mount 2A 2 A - 2 A 125V 60V 30 W - No 12.5mm 7.5mm
RS Stock No. 193-5857
BrandRS PRO
kr 412,404
Each (In a Pack of 100)
Units
24V dc DPDT PCB Mount 3A 3 A - 3 A 250V 220V 60 W DS No 20mm 9.9mm
RS Stock No. 193-5855
BrandRS PRO
kr 634,45
Each
Units
12V dc DPDT PCB Mount 3A 3 A - 3 A - - - DS No 20mm 9.9mm
RS Stock No. 193-5865
BrandRS PRO
kr 1 077,36
Each
Units
12V dc DPDT PCB Mount 2A 2 A - 2 A 250V ac 220V dc 60 W G6S No 14.8mm 7.3mm
RS Stock No. 193-5846
BrandRS PRO
kr 229,84
Each (In a Pack of 100)
Units
5V dc DPDT PCB Mount 2A 2 A - 2 A 250V 220V 60 W TQ2 No 14mm 11.5mm
RS Stock No. 193-5860
BrandRS PRO
kr 1 077,36
Each
Units
24V dc SPDT PCB Mount 1A 1 A - 1 A 250V 220V 60 W Axicom P1 No 13mm 7.6mm
RS Stock No. 193-5848
BrandRS PRO
kr 546,972
Each (In a Pack of 100)
Units
5V dc DPDT PCB Mount 2A - - 2 A 250V 220V 60 W TX2 No 15mm 9.4mm
RS Stock No. 193-5858
BrandRS PRO
kr 362,89
Each
Units
5V dc SPDT PCB Mount 1A 1 A - 1 A 250V 220V 60 W Axicom P1 No 13mm 7.6mm
RS Stock No. 476-757
BrandRS PRO
kr 26,20
Each
Units
5 V cc DPDT PCB Mount 2A 2 A - 2 A 125V 60V 30 W - No 12.5mm 7.5mm
RS Stock No. 193-5854
BrandRS PRO
kr 412,404
Each (In a Pack of 100)
Units
5V dc DPDT PCB Mount 3A 3 A - 3 A 250V 220V 60 W DS No 20mm 9.9mm
RS Stock No. 193-5847
BrandRS PRO
kr 233,75
Each
Units
12V dc DPDT PCB Mount 2A 2 A - 2 A 250V 220V 60 W TQ2 No 14mm 11.5mm
RS Stock No. 193-5853
BrandRS PRO
kr 174,14
Each
Units
24V dc SPDT PCB Mount 3A 3 A - 3 A 250V ac 220V dc 60 W DS No 15mm 9.9mm
RS Stock No. 193-5864
BrandRS PRO
kr 700,285
Each (In a Pack of 100)
Units
12V dc DPDT PCB Mount 2A - - 2 A 250V 220V 60 W TX No 15mm 7.4mm
RS Stock No. 800-4524
BrandRS PRO
kr 42,72
Each
Units
5V dc SPDT PCB Mount 2A 2 A - 2 A 250V 220V 60 W - No 10mm 6.5mm