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 290-1416
Référence fabricant2961105
13,32 €
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24 V dc - SPDT 3.39 kΩ PCB Mount 10 mA - - - PCB Pin REL-MR- 24DC/21 - - Compact
N° de stock RS 508-0023
Référence fabricant2961192
7,55 €
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24 V dc - DPDT 1.44 kΩ PCB Mount 8A - - - Through Hole REL-MR- 24DC/21-21 - - -
N° de stock RS 358-8288
Référence fabricant2961121
14,20 €
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24 V dc - SPDT 3.39 kΩ PCB Mount 1mA - - - PCB Pin REL-MR- 24DC/21AU - - -
N° de stock RS 794-3771
Référence fabricant2903370
6,92 €
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24 V dc 170mW SPDT 3.388 kΩ DIN Rail 6A - - - Plug In RIF-0-RPT-24DC/21 250V ac 250V dc -
N° de stock RS 507-9966
Référence fabricant2961422
10,34 €
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230 V ac - SPDT 32.5 kΩ PCB Mount 16A - - - Through Hole REL-MR-230AC/21HC 250V ac 250V dc -
N° de stock RS 794-3761
Référence fabricant2903361
5,23 €
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24 V dc 170mW SPNO 3.388 kΩ DIN Rail 6A - - - Plug In RIF-0-RPT-24DC/1 250V ac 250V dc -
N° de stock RS 308-1311
Référence fabricant2942153
23,51 €
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24 V dc - SPDT 1.143 kΩ DIN Rail - - - - Screw EMG REL - - -
N° de stock RS 666-7031
Référence fabricant2981363
28,16 €
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24 V dc - DPDT - - - - - - Screw PSR-SCF- 24UC/URM/2X21 - - -
N° de stock RS 742-4380
Référence fabricant2981444
65,72 €
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24 V dc - 4NO/2NC - - - - - - Screw PSR-SCF- 24UC/URM/4X1/2X2 250V 250V -
N° de stock RS 507-9972
Référence fabricant2961312
6,66 €
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24 V dc - SPDT 1.44 kΩ PCB Mount 16A - - - Through Hole REL-MR- 24DC/21HC 250V ac 250V dc -
N° de stock RS 794-3746
Référence fabricant2903338
7,12 €
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24 V dc 400mW SPDT 1.44 kΩ DIN Rail 12A - - - Plug In RIF-1-RPT-LDP-24DC/1X21AU 250V ac 250V dc -
N° de stock RS 794-3711
Référence fabricant2903330
7,35 €
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24 V dc 400mW DPDT 1.44 kΩ DIN Rail 50mA - - - Plug In RIF-1-RPT-LDP-24DC/2X21AU 30V ac 36V dc -
N° de stock RS 794-3780
Référence fabricant2903371
7,69 €
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12 V dc 170mW SPDT 847 Ω DIN Rail 6A - - - Plug In RIF-0-RPT-12DC/21 250V ac 250V dc -
N° de stock RS 794-3660
Référence fabricant2903294
11,79 €
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24 V dc 80mW 3PDT 430 Ω DIN Rail 2A - - - Plug In RIF-3-RPT-LDP-24DC/3X21 250V ac 250V dc -
N° de stock RS 308-1333
Référence fabricant2940391
35,17 €
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24 V dc - DPDT - DIN Rail - - - - Screw EMG REL - - -
N° de stock RS 794-3658
Référence fabricant2903292
13,35 €
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Unité
230 V ac - 3PDT 7.08 kΩ DIN Rail 2A - - - Plug In RIF 250V ac 250V dc -
N° de stock RS 794-3620
Référence fabricant2903273
16,78 €
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230 V ac 2.8W 3P-NO 7.08 kΩ DIN Rail 8A - - - Plug In RIF 440V ac 250V dc -
N° de stock RS 508-0102
Référence fabricant2961451
11,59 €
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230 V ac - DPDT 32.5 kΩ PCB Mount 15A - - - Through Hole REL-MR-230AC/21-21 250V ac 250V dc -
N° de stock RS 794-3705
Référence fabricant2903327
9,17 €
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230 V ac - DPDT 32.5 kΩ DIN Rail 50mA - - - Plug In RIF-1-RPT-LV-230AC/2X21AU 30V ac 36V dc -
N° de stock RS 794-3749
Référence fabricant2903339
8,63 €
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230 V ac - SPDT 32.5 kΩ DIN Rail 10mA - - - Plug In RIF-1-RPT-LV-230AC/1X21 250V ac 250V dc -