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 21 - 40 of 4395 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. 450-0217
BrandRS PRO
SGD6.78
Each
units
110V ac 1.2W SPDT 3.83 kΩ PCB Mount 15A 1.5kV ac PCB Pin - 240V ac 28V dc - 1 27mm
RS Stock No. 800-4454
BrandRS PRO
SGD2.99
Each
units
24V dc 400mW DPDT 1.44 kΩ PCB Mount 8A 5kV ac Through Hole - 440V ac 300V dc - 2 29mm
RS Stock No. 476-680
BrandRS PRO
SGD2.85
Each
units
24V dc 150mW SPDT 3.84 kΩ PCB Mount 2A 1kV ac Through Hole - 125V ac 60V dc - 1 12.5mm
RS Stock No. 476-589
BrandRS PRO
SGD5.45
Each
units
12V dc 290mW SPDT 620 Ω PCB Mount 10A 5kV ac Through Hole - 440V ac 125V dc - 1 28.5mm
RS Stock No. 450-0295
BrandRS PRO
SGD10.17
Each
units
24V dc 900mW SPDT 750 Ω PCB Mount 15A 1.5kV ac PCB Pin - 240V ac 28V dc - 1 27mm
RS Stock No. 800-4463
BrandRS PRO
SGD3.81
Each
units
24V ac 750mW DPDT 350 Ω PCB Mount 8A 5kV ac Through Hole - 440V ac 300V dc - 2 29mm
RS Stock No. 888-6919
BrandRS PRO
SGD16.822
Each (In a Pack of 5)
units
230V ac/dc - SPDT - DIN Rail 6A - Push In - 250V 250V - 1 6.2mm
RS Stock No. 450-0425
BrandRS PRO
SGD8.86
Each
units
24V dc 900mW DPDT 650 Ω Plug In 10A 1.5kV ac PCB Pin - 240V ac 30V dc - 2 28mm
RS Stock No. 800-4518
BrandRS PRO
SGD2.80
Each
units
5V dc 140mW DPDT 178 Ω PCB Mount 2A 1kV ac Through Hole - 125V ac 110V dc - 2 14mm
RS Stock No. 121-7834
BrandRS PRO
SGD16.70
Each
units
12V dc 300W 3PDT - Plug In 10A 2.5kV ac Plug In - 250V ac 30V dc - 3 36mm
RS Stock No. 888-6833
BrandRS PRO
SGD11.652
Each (In a Pack of 5)
units
230V ac/dc - SPDT - DIN Rail 6A - Screw - 250V 250V - 1 6.2mm
RS Stock No. 476-606
BrandRS PRO
SGD4.19
Each
units
6V dc 150mW DPDT 240 Ω PCB Mount 2A 1.5kV ac Through Hole - 240V ac 120V dc - 2 20.2mm
RS Stock No. 348-778
BrandRS PRO
SGD10.67
Each
units
115V ac 2W DPDT 2 kΩ Plug In 10A 1.5kV ac Through Hole - 240V 30V - 2 35mm
RS Stock No. 819-8994
BrandRS PRO
SGD42.06
Each
units
24V dc - 4PDT - PCB Mount 2A - PCB Pin - 250V 220V - 4 20.32mm
RS Stock No. 121-7829
BrandRS PRO
SGD14.13
Each
units
24V dc 300W DPDT - Plug In 10A 2.5kV ac Plug In - 250V ac 30V dc - 2 36mm
RS Stock No. 800-4530
BrandRS PRO
SGD3.94
Each
units
5V dc 900mW SPNO 27.8 Ω PCB Mount 25A 4.5kV ac Through Hole - 250V ac - - 1 30.5mm
RS Stock No. 121-7814
BrandRS PRO
SGD10.02
Each
units
230V ac 300W DPDT - Plug In 10A 2kV ac Plug In - 250V ac 30V dc - 2 28mm
RS Stock No. 121-7836
BrandRS PRO
SGD15.13
Each
units
24V ac 300W 3PDT - Plug In 10A 2.5kV ac Plug In - 250V ac 30V dc - 3 36mm
RS Stock No. 349-327
BrandRS PRO
SGD11.26
Each
units
24V ac 2W DPDT 85 Ω Plug In 10A 1.5kV ac Through Hole - 240V 30V - 2 35mm
RS Stock No. 348-762
BrandRS PRO
SGD11.09
Each
units
230V ac 2W DPDT 8.2 kΩ Plug In 10A 1.5kV ac Through Hole - 240V 30V - 2 35mm
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 ...
R2N, R3N and R4N series miniature industrial relays ...
Description:
R2N, R3N and R4N series miniature industrial relays for general applications. All relays are designed for mounting in plug-in sockets with WT features as standard (W - mechanical indicator + T - lockable front test button). Accessories include retainer clips ...
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 ...
Coil to contact isolation 6000Vac (1.2 / 50μs)8mm ...
Description:
Coil 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 adaptors for Faston connection available separately.