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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Description Prix 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
N° de stock RS 758-6898
Référence fabricantLZX:PT270024
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7,72 €
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24V dc - DPDT - Plug In 8A - - - Screw LZX 230V 24V -
N° de stock RS 758-6905
Référence fabricantLZX:PT570730
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8,95 €
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230V ac - 4PDT - Plug In 6A - - - Screw LZX 230V 24V -
N° de stock RS 758-6908
Référence fabricantLZX:RT424024
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6,18 €
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24V dc - - - Plug In 2.5A - - - Screw LZX 230V - -
N° de stock RS 622-0547
Référence fabricant5TT4202-0
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31,14 €
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230V ac 3W DPNO - DIN Rail 16A 4kV - - Screw 5TT4 400V ac - -
N° de stock RS 758-6885
Référence fabricantLZS:RT78726
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6,62 €
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- - - - - - - - - - LZS - - -
N° de stock RS 622-0569
Référence fabricant5TT4205-0
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34,29 €
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230V ac 3W SPDT - DIN Rail 16A 4kV - - Screw 5TT4 400V ac - -
N° de stock RS 622-0581
Référence fabricant5TT4207-0
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50,94 €
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230V ac 3W DPDT - DIN Rail 16A 4kV - - Screw 5TT4 400V ac - -
N° de stock RS 758-6839
Référence fabricantLZS:PT5B5L24
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18,54 €
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24V dc - 4PDT - Plug In 6A - - - Screw LZS 230V 24V -
N° de stock RS 758-6895
Référence fabricantLZX:PT570615
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8,95 €
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Unité
115V ac - 4PDT - Plug In 6A - - - Screw LZX 230V 24V -
N° de stock RS 758-6823
Référence fabricantLZS:PT3A5L24
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18,54 €
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24V dc - 3PDT - Plug In 8A - - - Screw LZS 230V 24V -
N° de stock RS 758-6835
Référence fabricantLZS:PT5A5T30
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19,71 €
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230V ac - 4PDT - Plug In 6A - - - Screw LZS 230V 24V -
N° de stock RS 758-6891
Référence fabricantLZX:PT570024
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7,72 €
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Unité
24V dc - 4PDT - Plug In 6A - - - Screw LZX 230V 24V -
N° de stock RS 758-6876
Référence fabricantLZS:RT4A4L24
MarqueSiemens
19,89 €
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Unité
24V - DPDT - Plug In 2.5A - - - Screw LZS 230V - -
N° de stock RS 175-2354
Référence fabricant3RS1800-2HP00
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59,67 €
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Unité
240V ac/dc - 3CO - DIN Rail 1 (DC) A, 3 (AC) A - 3 A 1 A Cage Clamp 3RS1 240V ac 24V dc -
N° de stock RS 175-2349
Référence fabricant3RS1800-1AP00
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41,76 €
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240V ac/dc - SPDT - DIN Rail 1 (DC) A, 3 (AC) A - 3 A 1 A Screw 3RS1 250V ac 250V dc -
N° de stock RS 175-2351
Référence fabricant3RS1800-1HP00
MarqueSiemens
58,50 €
Each
Unité
240V ac/dc - 3CO - DIN Rail 1 (DC) A, 3 (AC) A - 3 A 1 A Screw 3RS1 240V ac 24V dc -
Nouveau
N° de stock RS 203-2309
Référence fabricant5TT4217-2
MarqueSiemens
48,70 €
Each
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400V ac 1.7W DPDT - DIN Rail 4A 4kV - - - 5TT4 - - -
N° de stock RS 622-0575
Référence fabricant5TT4206-0
MarqueSiemens
35,01 €
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230V ac 3W SPDT - DIN Rail 16A 4kV - - Screw 5TT4 250V ac - -
N° de stock RS 758-6860
Référence fabricantLZS:RT3A4L24
MarqueSiemens
18,90 €
Each
Unité
24V dc - SPDT - Plug In 3A - - - Screw LZS 230V - -
N° de stock RS 175-2352
Référence fabricant3RS1800-2AP00
MarqueSiemens
42,48 €
Each
Unité
240V ac/dc - SPDT - DIN Rail 1 (DC) A, 3 (AC) A - 3 A 1 A Cage Clamp 3RS1 240V ac 24V dc -