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.


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Omschrijving Prijs 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 Series Maximum Switching Voltage AC Maximum Switching Voltage DC Application
RS-stocknr. 838-2751
FabrikantnummerRF1V-4A2B-D24
FabrikantIdec
€ 25,32
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24 V dc 500mW 4NO/2NC 1.152 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2767
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FabrikantIdec
€ 29,52
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24 V dc 500mW 4NO/2NC 1.152 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2723
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FabrikantIdec
€ 24,93
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24 V dc 360mW 3PDT 1.6 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2748
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FabrikantIdec
€ 27,22
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48 V dc 500mW 3PDT 4.608 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2789
FabrikantnummerRF1V-5A1BL-D24
FabrikantIdec
€ 29,52
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24 V dc 500mW 5PDT 1.152 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2713
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FabrikantIdec
€ 22,58
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12 V dc 360mW 3PDT 400 Ω Plug In 6A 4kV ac - - Plug In - 250V 30V -
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€ 30,65
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FabrikantIdec
€ 19,40
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110 V dc 1W DPDT 12.1 kΩ Plug In 10A 2.5kV ac - - Plug In - 250V ac 30V dc -
RS-stocknr. 838-2732
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FabrikantIdec
€ 26,08
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48 V dc 360mW 3PDT 6.4 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2735
FabrikantnummerRF1V-3A3B-D12
FabrikantIdec
€ 26,08
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12 V dc 500mW 3PDT 288 Ω Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2739
FabrikantnummerRF1V-3A3B-D24
FabrikantIdec
€ 26,08
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24 V dc 500mW 3PDT 1.152 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2760
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€ 27,22
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48 V dc 500mW 4NO/2NC 4.608 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2745
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€ 31,00
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24 V dc 500mW 3PDT 1.152 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2785
FabrikantnummerRF1V-5A1BL-D12
FabrikantIdec
€ 29,52
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12 V dc 500mW 5PDT 288 Ω Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2710
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FabrikantIdec
€ 26,08
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48 V dc 360mW DPDT 6.4 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 838-2779
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€ 26,08
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12 V dc 500mW 5PDT 288 Ω Plug In 6A 4kV ac - - Plug In - 250V 30V -
RS-stocknr. 813-4707
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€ 54,31
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24 V dc 500mW 4NO/2NC 1.152 kΩ PCB Mount 6A 4kV ac - - PCB Pin - 250V 30V -
RS-stocknr. 838-2694
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€ 22,66
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24 V dc 360mW DPDT 1.6 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -
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€ 22,65
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48 V dc 360mW DPDT 6.4 kΩ Plug In 6A 4kV ac - - Plug In - 250V 30V -