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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Part Details Brand Coil Voltage Coil Power Switching Current Coil Resistance Maximum Switching Current AC Isolation Coil To Contact Contact Configuration Maximum Switching Current DC Contact Material Mounting Type Maximum Switching Voltage AC Terminal Type Maximum Switching Voltage DC Number of Poles Dimensions Application Length Depth Height Series Life Special Features Maximum Switching Power AC Standards Met Maximum Switching Power DC Operating Temperature Range Electrical Life Maximum Operating Temperature Relay Switching Classification Minimum Operating Temperature
Omron 4PDT Non-Latching Relay Plug In, 110/120V ac Coil, 3 A, 3 A Miniature Power Relay
  • RS Stock No. 186-4171
  • Brand Omron
  • Mfr. Part No. MY4IN-GS 110/120VAC
Omron 110/120V ac - - 4.43 kΩ 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 110/120V ac Coil, 3 A, 3 A Miniature Power Relay
  • RS Stock No. 186-4175
  • Brand Omron
  • Mfr. Part No. MY4N-GS 110/120VAC
Omron 110/120V ac - - 4.43 kΩ 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 220/240V ac Coil, 3 A, 3 A Miniature Power Relay
  • RS Stock No. 186-4167
  • Brand Omron
  • Mfr. Part No. MY4-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 660 VA - 72 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron 4PDT Non-Latching Relay Plug In, 220/240V ac Coil, 3 A, 3 A Miniature Power Relay
  • RS Stock No. 186-4172
  • Brand Omron
  • Mfr. Part No. MY4IN-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 220/240V ac Coil, 3 A, 3 A Miniature Power Relay
  • RS Stock No. 186-4176
  • Brand Omron
  • Mfr. Part No. MY4N-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 24V ac Coil, 3 A, 3 A Miniature Power Relay Omron 24V ac - - 180 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 24V ac Coil, 3 A, 3 A Miniature Power Relay Omron 24V ac - - 180 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 660 VA - 72 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron 4PDT Non-Latching Relay Plug In, 24V ac Coil, 3 A, 3 A Miniature Power Relay Omron 24V ac - - 180 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 24V dc Coil, 3 A, 3 A Miniature Power Relay Omron 24V dc - - 662 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron 4PDT Non-Latching Relay Plug In, 24V dc Coil, 3 A, 3 A Miniature Power Relay Omron 24V dc - - 662 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 660 VA - 72 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron 4PDT Non-Latching Relay Plug In, 24V dc Coil, 3 A, 3 A Miniature Power Relay Omron 24V dc - - 662 Ω 3 A 2kV ac 4PDT 3 A - Plug In 250V ac Plug In 220V dc 4 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 660 VA - 72 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 110/120V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4162
  • Brand Omron
  • Mfr. Part No. MY2N-GS 110/120VAC
Omron 110/120V ac - - 4.43 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 110/120V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4153
  • Brand Omron
  • Mfr. Part No. MY2-GS 110/120VAC
Omron 110/120V ac - - 4.43 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 1.1 kVA - 120 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron DPDT Non-Latching Relay Plug In, 110/120V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4157
  • Brand Omron
  • Mfr. Part No. MY2IN-GS 110/120VAC
Omron 110/120V ac - - 4.43 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 220/240V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4154
  • Brand Omron
  • Mfr. Part No. MY2-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 1.1 kVA - 120 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron DPDT Non-Latching Relay Plug In, 220/240V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4159
  • Brand Omron
  • Mfr. Part No. MY2IN-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 220/240V ac Coil, 5 A, 5 A Miniature Power Relay
  • RS Stock No. 186-4163
  • Brand Omron
  • Mfr. Part No. MY2N-GS 220/240VAC
Omron 220/240V ac - - 15.92 kΩ 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 24V ac Coil, 5 A, 5 A Miniature Power Relay Omron 24V ac - - 180 Ω 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators, With Latching Lever 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
Omron DPDT Non-Latching Relay Plug In, 24V ac Coil, 5 A, 5 A Miniature Power Relay Omron 24V ac - - 180 Ω 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles Built-in Mechanical Indicators 1.1 kVA - 120 W -55 → +70°C 500000 Cycles +70°C Miniature Power Relay -55°C
Omron DPDT Non-Latching Relay Plug In, 24V ac Coil, 5 A, 5 A Miniature Power Relay Omron 24V ac - - 180 Ω 5 A 2kV ac DPDT 5 A - Plug In 250V ac Plug In 220V dc 2 28 x 21.5 x 36mm General Purpose 28mm 21.5mm 36mm MY 50000000 cycles LED Operation Indicator and Built-in Mechanical indicators 1.1 kVA - 120 W -40 → +70°C 500000 Cycles +70°C Miniature Power Relay -40°C
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