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40A Polarized PCB Latching Relay
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40A Polarized PCB Latching Relay

You can rest assured to buy 440A Polarized PCB Latching Relay from us. We look forward to cooperating with you, if you want to know more, you can consult us now, we will reply to you in time! We do everything we can to add value to our customers' experiences, allowing us to be their best option.

◉ Energy Saving
◉ 40A switching capability
◉ Environmental friendly product
◉ Single coil and dual coil available
◉ RoHS Compliant


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Product Description

As the professional manufacturer, we would like to provide you 40A Polarized PCB Latching Relay. And we will offer you the best after-sale service and timely delivery. Sincerely look forward to cooperating with you in the near future.

Single and double coils magnet latching relay available.

Switching capacity up to 40A.

Energy saving and enviromental friendly product.

Ordering Information

1 Part number:NT90L

2 Load: 30A,40A/277VAC (Resistive load)

3000W 240VAC (Incandescent Lamp)

5A/280VAC (Electronic ballast)

2HP 250VAC (Motor load)

3 Contact arrangement: A:1A; B:1B; C:1C

4 Enclosure:S: Wash tight; E: Flux proof 
5 Coil rated voltage(V):5,12,24,48
6 Coil power:0.9:0.9W

7 Coil:NIL:Single coil; D: Double coils

Contact Data

Coil Parameter


1.When latching relays are installed in equipment, the latch and reset coil should not simultaneously. Coil should not be pulsed with less than the nominal coil voltage and pulse width should be a minimum of three times the specified operate time of the  relay. If these conditions are not followed, it is possible for the relay to in be the magnetically neutral position .

2.Switching voltage is for test purpose only and are no to be used as design criteria.

Safety Approvals


Insulation Resistance

1000MΩ min (at 500VDC)

Item 4.11 of IEC61810-7

Dielectric Strength

Between Contacts

Between Contact and Coil

50Hz 1500V 1min

50Hz 2500V 4000V(Without Pin 6)1min

Item 4.9 of IEC 61810-7

Item 4.9 of IEC 61810-7

Shock Resistance

196m/s² 11ms

Item 4.26 of IEC 61810-7

Vibration Resistance

10Hz-55Hz Double amplitude 1.5mm

Item 4.28 of IEC 61810-7

Terminals Strength


Item 4.24 of IEC 61810-7

Ambient Temperature



Relative Humidity

5% to 85%

Item 4.16 of IEC 61810-7


25g(Unenclosed) 28g

Item 4.7 of IEC 61810-7



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