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 - 15 of 15 products
Results per page
Description Price Coil Voltage Coil Power Contact Configuration Coil Resistance Mounting Type Switching Current Isolation Coil To Contact Maximum Switching Current AC Maximum Switching Current DC Terminal Type Maximum Switching Voltage AC Maximum Switching Voltage DC Application Number of Poles
RS Stock No. 135-7383
Mfr. Part No.788-156
BrandWago
£2.66
Each
Units
24V dc - DPDT - DIN Rail 2 x 8A 5kVrms - - Plug In 250V - - 2
RS Stock No. 180-3054
Mfr. Part No.857-150
BrandWago
£6.96
Each
Units
12 V dc 1500 W SPDT - Plug In 6A - 3 A 2 A PCB Pin 250 V 30 V - -
RS Stock No. 135-7384
Mfr. Part No.859-304
BrandWago
£5.85
Each
Units
24V dc <320mW - - DIN Rail 10mA 4kVrms - - Plug In 250V - - 1
RS Stock No. 135-7375
Mfr. Part No.857-304
BrandWago
£4.73
Each
Units
24V dc <300mW - - DIN Rail 10mA 4kVrms - - Plug In 250V - - 1
RS Stock No. 180-3055
Mfr. Part No.788-154
BrandWago
£4.19
Each
Units
24 V dc 4000 W SPDT - Plug In 16A - 6 A 2 A PCB Pin 250 V 24 V - -
RS Stock No. 135-7386
Mfr. Part No.858-304
BrandWago
£7.52
Each
Units
24V dc 900mW 4PDT - DIN Rail 36.9mA 1.5kVrms - - Plug In 250V - - 4
RS Stock No. 135-7376
Mfr. Part No.857-354
BrandWago
£7.65
Each
Units
24V ac/dc <300 mVA, <800 mVA - - DIN Rail 8.5mA 4kVrms - - Plug In 250V - - 1
RS Stock No. 180-3056
Mfr. Part No.788-152
BrandWago
£4.56
Each
Units
12 V dc 2000 W DPDT - Plug In 8A - 3 A 2 A PCB Pin 250 V 24 V - -
RS Stock No. 135-7378
Mfr. Part No.857-358
BrandWago
£8.50
Each
Units
230V ac/dc <300 mVA, <800 mVA - - DIN Rail 6A 4kVrms - - Plug In 250V - - 1
RS Stock No. 135-7387
Mfr. Part No.858-150
BrandWago
£3.78
Each
Units
24V dc - 4PDT - DIN Rail 36.9mA 1.5kVrms - - Plug In 250V - - 4
RS Stock No. 135-7382
Mfr. Part No.788-312
BrandWago
£5.54
Each
Units
24V dc 400mW - - DIN Rail 19.1mA 5kVrms - - Plug In 250V - - 2
RS Stock No. 180-3039
Mfr. Part No.788-390
BrandWago
£17.22
Each
Units
24 V dc 2000 W DPDT - DIN Rail 8A - 1.5 A 1 A Cage Clamp 250 V 24 V - -
RS Stock No. 135-7377
Mfr. Part No.857-357
BrandWago
£16.07
Each
Units
115V ac/dc <300 mVA, <800 mVA - - DIN Rail 6A 4kVrms - - Plug In 250V - - 1
RS Stock No. 135-7381
Mfr. Part No.857-155
BrandWago
£116.10
1 Box of 20
Box(es)
60 V ac/dc, 230 V ac/dc - - - DIN Rail 6A 4kVrms - - Plug In 250V - - 1
RS Stock No. 135-7380
Mfr. Part No.857-152
BrandWago
£76.50
1 Box of 20
Box(es)
24V dc - - - DIN Rail 6A 4kVrms - - Plug In 250V - - 1