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 41 - 60 of 4433 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. 121-7821
BrandRS PRO
MYR64.89
Each
units
24V dc 300W 4PDT - Plug In 10A 2kV ac Plug In - 250V ac 30V dc - 4 41.5mm
RS Stock No. 613-3594
BrandRS PRO
MYR44.08
Each
units
240V ac 2.5W 3PDT 12.1 kΩ Plug In 12A 2.2kV ac PCB Pin - 240V ac 28V dc - 3 30.8mm
RS Stock No. 476-678
BrandRS PRO
MYR22.91
Each
units
24V dc 400mW SPDT 1.44 kΩ PCB Mount 16A 5kV ac Through Hole - 440V ac 300V dc - 1 29mm
RS Stock No. 476-791
BrandRS PRO
MYR19.85
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. 800-4555
BrandRS PRO
MYR15.37
Each
units
6V dc 170mW SPST 212 kΩ PCB Mount 6A 4kV ac Through Hole - 400V ac 125V dc - 1 28mm
RS Stock No. 121-7799
BrandRS PRO
MYR47.18
Each
units
24V ac 180W 4PDT - Plug In 6A 2kV ac Plug In - 250V ac 30V dc - 4 28mm
RS Stock No. 476-602
BrandRS PRO
MYR13.93
Each
units
5V dc 150mW DPDT 167 Ω PCB Mount 2A 1.5kV ac Through Hole - 240V ac 120V dc - 2 20.2mm
RS Stock No. 476-753
BrandRS PRO
MYR19.85
Each
units
12V dc 400mW DPDT 360 Ω PCB Mount 8A 5kV ac Through Hole - 440V ac 300V dc - 2 29mm
RS Stock No. 121-7814
BrandRS PRO
MYR35.05
Each
units
230V ac 300W DPDT - Plug In 10A 2kV ac Plug In - 250V ac 30V dc - 2 28mm
RS Stock No. 476-618
BrandRS PRO
MYR9.23
Each
units
24V dc 360mW SPDT 1.6 kΩ PCB Mount 10A 2kV ac Through Hole - 277V ac 30V dc - 1 19mm
RS Stock No. 450-0403
BrandRS PRO
MYR27.96
Each
units
240V ac 1.2W DPDT 15.7 kΩ Plug In 10A 1.5kV ac PCB Pin - 240V ac 30V dc - 2 28mm
RS Stock No. 144-1602
BrandRS PRO
MYR42.93
Each
units
24V dc 530mW DPDT 1.1 kΩ Plug In 5A 5kV ac PCB Pin RFT 250V 30V - 2 29mm
RS Stock No. 888-6887
BrandRS PRO
MYR49.446
Each (In a Pack of 5)
units
24V ac/dc - SPDT - DIN Rail 6A - Push In - 250V 250V - 1 6.2mm
RS Stock No. 819-8990
BrandRS PRO
MYR146.45
Each
units
12V dc - 4PDT - PCB Mount 2A - PCB Pin - 250V 220V - 4 20.32mm
RS Stock No. 450-0273
BrandRS PRO
MYR31.48
Each
units
12V dc 900mW SPDT 188 Ω PCB Mount 15A 1.5kV ac PCB Pin - 240V ac 28V dc - 1 27mm
RS Stock No. 476-713
BrandRS PRO
MYR14.34
Each
units
24V dc 400mW SPNO 1.44 kΩ PCB Mount 16A 5kV ac Through Hole - 440V ac 300V dc - 1 29mm
RS Stock No. 476-719
BrandRS PRO
MYR19.68
Each
units
24V dc 400mW SPDT 1.44 kΩ PCB Mount 12A 5kV ac Through Hole - 440V ac 300V dc - 1 29mm
RS Stock No. 476-741
BrandRS PRO
MYR14.05
Each
units
6V dc 200mW SPDT 180 Ω PCB Mount 3A 1kV ac Through Hole - 240V ac 30V dc - 1 15.7mm
RS Stock No. 121-7816
BrandRS PRO
MYR57.20
Each
units
24V dc 300W 3PDT - Plug In 10A 2kV ac Plug In - 250V ac 30V dc - 3 31.5mm
RS Stock No. 888-6865
BrandRS PRO
MYR43.534
Each (In a Pack of 5)
units
24V dc - SPDT - DIN Rail 6A - Cage Clamp - 250V 250V - 1 6.2mm
Related Products
General purpose, miniature 4-pole changeover relays capable of ...
Description:
General purpose, miniature 4-pole changeover relays capable of switching up to 3A. Mechanical flag & LED indication to assist commissioning and fault findingLabelling facility for easy identificationGold clad contacts allows small loads to be switched consistentlyEnvironmentally friendly cadmium free contactsSurge ...
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.
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 ...
These automotive micro-ISO relays are compact and are ...
Description:
These automotive micro-ISO relays are compact and are available in through hole and plug in terminals. Typical applications include fan motors, heaters, head lamps, air compressors, EPS, ABS, blower fans, defoggers and other automotve system applications. Micro-ISO type terminalsSmall size: ...