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 4203 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 Terminal Type Series Maximum Switching Voltage AC Maximum Switching Voltage DC Application Number of Poles
RS Stock No. 776-1664
Mfr. Part No.55.34.9.024.0074
BrandFinder
$27.97
Each
units
24 V dc 1W 4PDT 600 Ω Plug In 7A - - Plug In 55 Series - - - 4
RS Stock No. 353-837
Mfr. Part No.G2R-1-SN 24DC(S)
BrandOmron
$14.26
Each
units
24 V dc 530mW SPDT 1.1 kΩ Plug In 10A 5kV ac - Plug In G2R-1 380V ac 125V dc - 1
RS Stock No. 457-2846
Mfr. Part No.34.51.7.024.0010
BrandFinder
$14.38
Each
units
24 V dc 170mW SPDT 3.35 kΩ PCB Mount 6A 6kV - PCB Pin 34 Series 400V ac - - 1
RS Stock No. 353-887
Mfr. Part No.G2R-2-SN 24DC(S)
BrandOmron
$16.65
Each
units
24 V dc - DPDT 1.113 kΩ Plug In 5A - - Plug In G2R-2 - - - 2
RS Stock No. 290-1416
Mfr. Part No.2961105
$23.18
Each
units
24 V dc - SPDT 3.39 kΩ PCB Mount 10 mA - - PCB Pin REL-MR- 24DC/21 - - Compact 1
RS Stock No. 733-5104
Mfr. Part No.50.12.9.012.5000
BrandFinder
$31.81
Each
units
12 V dc 700mW DPDT 205 Ω PCB Mount 8A 6kV - Through Hole 50 Series 400V - - 2
RS Stock No. 351-588
Mfr. Part No.40.52.7.024.0000
BrandFinder
$9.78
Each
units
24 V dc 500mW DPDT 1.2 kΩ PCB Mount 8A 6kV - Through Hole 40 Series 400V ac - - 2
RS Stock No. 794-3771
Mfr. Part No.2903370
$15.58
Each
units
24 V dc 170mW SPDT 3.388 kΩ DIN Rail 6A - - Plug In RIF-0-RPT-24DC/21 250V ac 250V dc - -
RS Stock No. 211-1304
Mfr. Part No.G2R1TAC240
BrandOmron
$32.55
Each
units
240 V ac 900 SPDT 30 kΩ Panel Mount 10A 5kV ac - Quick Connect G2R - - - 1
RS Stock No. 154-526
Mfr. Part No.56.32.9.024.0040
BrandFinder
$30.34
Each
units
24 V dc 1.5W DPDT 600 Ω Plug In 12A - - Quick Connect 56 Series 400V ac - - 2
RS Stock No. 828-7328
Mfr. Part No.LY2N-DC24
BrandOmron
$24.47
Each
units
24 V dc 900mW DPDT 650 Ω Plug In 10A 2kV ac - PCB Pin LY2N 250V 125V - -
RS Stock No. 680-3830
Mfr. Part No.RT424012 6-1393243-3
$2.95
Each
units
12 V dc - DPDT 360 Ω PCB Mount 8A - - Through Hole RT2 - - - -
RS Stock No. 135-5117
Mfr. Part No.RT424012
$3.366
Each (In a Box of 20)
units
12 V dc - DPDT 360 Ω PCB Mount 8A - - Through Hole - - - - -
RS Stock No. 121-8073
Mfr. Part No.HF105F-4/240A1HSTF
$9.30
Each
units
240 V ac 2W SPNO 13.49 kΩ Flange Mount 30A 2.5kV ac - Quick Connect - 277V 28V - 1
RS Stock No. 154-374
Mfr. Part No.56.32.8.230.0040
BrandFinder
$39.08
Each
units
230 V ac 1.5W DPDT 17 kΩ Plug In 12 A - - Quick Connect 56 Series 400V ac - - 2
RS Stock No. 776-1660
Mfr. Part No.55.34.9.012.0074
BrandFinder
$27.97
Each
units
12 V dc 1W 4PDT 140 Ω Plug In 7A - - - 55 Series - - - 4
RS Stock No. 385-929
Mfr. Part No.55.34.9.024.0040
BrandFinder
$26.57
Each
units
24 V dc 1W 4PDT 600 Ω Plug In 7A - - Quick Connect 55 Series 400V ac - - 4
RS Stock No. 828-7319
Mfr. Part No.LY2N-DC12
BrandOmron
$29.36
Each
units
12 V dc 900mW DPDT 160 Ω Plug In 10A 2kV ac - PCB Pin LY2N 250V 125V - -
RS Stock No. 613-4351
Mfr. Part No.G2RV-1-S DC21
BrandOmron
$15.21
Each
units
21 V dc - SPDT - Plug In 6A - - Plug In G2RV - - - -
RS Stock No. 394-9116
BrandRS PRO
$12.13
Each
units
240 V ac 1.1W 4PDT 18.79 kΩ Plug In 5A 2kV ac - Through Hole - 250V ac 125V dc - 4
Related Products
Relays have a test button, LED indication and ...
Description:
Relays have a test button, LED indication and mechanical flag indicator fitted as standard. The test button is colour coded and dual function, push to test or lift to latch. A removable marking label is fitted to each relay. The ...
Relays with 2 or 3 rest/work contacts (RT).Permanent ...
Description:
Relays with 2 or 3 rest/work contacts (RT).Permanent 16A current.Housing equipped with a lockable mechanical test button.Option to fit with time switch series 86 dual function or multi-function (357-6948 or 357-6954).Mounts on universal supports with panel attachment, assembly on DIN ...
Range of plug-in automation relays on an RHZ-21-type ...
Description:
Range of plug-in automation relays on an RHZ-21-type base.The pivoting front face has three functions: removal latch, dust protection and protection from moving components, and stop-locking.Relay self-locks onto the base by snap-fitting.
Mechanical flag indicator, lockable test button and LEDCoil ...
Description:
Mechanical flag indicator, lockable test button and LEDCoil to contact isolation 6000Vac (1.2 / 50μs)8mm creepage and clearance distance coil to contactContact material: AgNiAmbient temperature range: -40 to +70°CDimensions (mm): H 32.8, W 29, D12.4DIN rail sockets and Flange mount ...