Non-Latching Relays

Relays are electrical switches that are operated by electrical impulses with the primary function to open and close a circuit, they can also be referred to as industrial switches. There are 2 main types available, latching and non–latching relays.


How do non-latching relays work?


Non-latching relays are in a normally closed (NC) position and will stay in this state without power. When power passes through the circuit, the relay switched to a normally open (NO) position by using an internal coil to generate a magnetic force, holding this NO position. Once the current is turned off, it returns to the NC position. This makes non-latching relays well suited to push-button applications like keyboards and micro-controller input buttons.


What are non-latching relays used for?


Non-latching relays are highly durable and versatile components, making their performance long lasting and suitable for use in a wide range of applications, such as:


  • Automotive engines

  • Household appliances

  • Industrial machinery

  • Medical equipment

  • Telecommunications equipment

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.


Considerations when selecting a 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.


...
Read more Read less

Filters

Viewing 1 - 20 of 248 products
Results per page
Description Price Coil Voltage Coil Power Contact Configuration Coil Resistance Mounting Type Switching Current Isolation Coil To Contact Terminal Type Series Maximum Switching Voltage AC Maximum Switching Voltage DC Application Number of Poles Length
RS Stock No. 884-1474
Mfr. Part No.RXM3AB1BD
HK$60.38
Each
units
24 V dc 900mW 3PDT 650 Ω Plug In 10A - Plug In - 250V - - 3 21mm
RS Stock No. 852-6890
Mfr. Part No.RXG25BD
HK$48.43
Each
units
24 V dc 530mW DPDT 1.1 kΩ Plug In 5A 5kV ac Plug In - 250V 30V - - 13mm
RS Stock No. 884-1301
Mfr. Part No.RXM4AB2B7
HK$73.29
Each
units
24 V ac 1.2W 4PDT 180 Ω Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 884-1411
Mfr. Part No.RXM2AB1B7
HK$52.57
Each
units
24 V ac 1.2W DPDT 180 Ω Plug In 12A - Plug In - 250V - - 2 21mm
RS Stock No. 814-8267
Mfr. Part No.9AS5D52-24
HK$30.29
Each
units
24 V dc 2.8W SPDT 576 Ω Flange Mount 30A 2.5kV ac Quick Connect - 300V - - - 50.22mm
RS Stock No. 814-8175
Mfr. Part No.750XBXH-24D
HK$519.25
Each
units
24 V dc 1.2W DPDT 470 Ω Plug In 12A 1.5kV rms Plug In - 300V - - - 40.9mm
RS Stock No. 293-5172
Mfr. Part No.RHN412B
HK$423.96
Each
units
24 V dc 1.6W 4PDT 43.4 Ω Plug In 5A 2.5kV Through Hole - - - - - 54mm
RS Stock No. 884-1531
Mfr. Part No.RXM4AB1FD
HK$70.30
Each
units
110 V dc 900mW 4PDT 13.44 kΩ Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 814-8226
Mfr. Part No.9AS1D52-5
HK$51.87
Each
units
5 V dc 2.8W SPNO 25 Ω Flange Mount 30A 2.5kV ac Quick Connect - 300V - - - 50.22mm
RS Stock No. 884-1547
Mfr. Part No.RXM4AB2E7
HK$77.28
Each
units
48 V ac 1.2W 4PDT 710 Ω Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 884-1272
Mfr. Part No.RXM2AB1P7
HK$29.18
Each
units
230 V ac 1.2W DPDT 15 kΩ Plug In 12A - Plug In - 250V - - 2 21mm
RS Stock No. 884-1584
Mfr. Part No.RXM4AB3FD
HK$50.79
Each
units
110 V dc 900mW 4PDT 13.44 kΩ Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 814-8412
Mfr. Part No.782XBXM4L-24D
HK$51.19
Each
units
24 V dc 1.2W DPDT 650 Ω Plug In 12A 1.6kV rms Plug In - 300V - - - 27.9mm
RS Stock No. 884-1559
Mfr. Part No.RXM4AB2FD
HK$80.43
Each
units
110 V dc 900mW 4PDT 13.44 kΩ Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 814-8169
Mfr. Part No.750XBXH-120A
HK$641.16
Each
units
120 V ac 1.2W DPDT 1.7 kΩ Plug In 12A 1.5kV rms Plug In - 300V - - - 40.9mm
RS Stock No. 884-1278
Mfr. Part No.RXM2AB2BD
HK$38.37
Each
units
24 V dc 900mW DPDT 650 Ω Plug In 12A - Plug In - 250V - - 2 21mm
RS Stock No. 884-1290
Mfr. Part No.RXM4AB1BD
HK$40.16
Each
units
24 V dc 900mW 4PDT 650 Ω Plug In 8A - Plug In - 250V - - 4 21mm
RS Stock No. 922-1767
Mfr. Part No.RXG22M7
HK$93.78
Each
units
220 V ac 820mW DPST-C/O 21 kΩ Plug In - 5kV ac Plug In - 250V 30V - 2 13mm
RS Stock No. 293-5188
Mfr. Part No.RHN411B
HK$540.63
Each
units
24 V ac 4.5W 4PDT 43.4 Ω - 5A 2.5kV Through Hole - - - - - 54mm
RS Stock No. 922-1619
Mfr. Part No.RXG11BD
HK$47.43
Each
units
24 V dc 530mW SPST-C/O 1.1 kΩ Plug In - 5kV ac Plug In - 250V 30V - 1 13mm