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10A Polarized Latching Relay

10A Polarized Latching Relay

As a professional high quality 10A Polarized Latching Relay manufacture, you can rest assured to buy 10A Polarized Latching Relay from our factory and we will offer you the best after-sale service and timely delivery.

● 10A switching capability
● High insulation
● Small size and light weight
● RoHS Compliant


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Product Description

As the professional manufacture, we would like to provide you 10A Polarized Latching Relay. Due to our focused approach, timely delivery and ethical business policy, we have been able to gain tremendous success in this domain.


Latching relay.

Small size and light weight.

Contact switching capacity can reach 10A.

PC board mounting.

Ordering Information

1 Part number: NT74L

2 Contact arrangement: A:1A; C:1C

3 Enclosure: S: Wash tight Z: Flux proof

4 Coil rated voltage(V): DC:3,5,12,24

5 Coil NIL:Single coil D: double coils

6 Polarity Nil: standard R: reverse polarity

7 Contact plating NIL:Standard G:Gold plated

Contact Data

Contact Arrangement 1A(SPSTNO) 1C(SPDT(B-M))
Contact Material AgSnO2
Contact Rating (Resistive) NO:10A/250VAC,24VDC
Max. Switching Power 240W 2500VA
Max. Switching Voltage 150VDC 400VAC Max. Switching Current :10A
Contact Resistance ≤100mΩ Item 4.12 of IEC 61810-7
Operation Electrical 5×104 Item 4.30 of IEC 61810-7
Life Mechanical 5×106 Item 4.31 of IEC 61810-7

Coil Parameter

Dash numbers Rated voltage VDC Coil resistance
Set/Reset voltage VDC
(70% of rated voltage )
Pulse duration ms Coil power W Set time ms Reset time ms
1 Coil
003-250 3 36 2.1 ≥30 0.25 ≤10 ≤10
005-250 8 100 3.5
012-250 12 576 8.4
024-250 24 2300 16.8
2 Coils
003-480 3 2×19 2.1 ≥30 2×0.48 ≤10 ≤10
005-480 5 2×52 3.5
012-480 12 2×300 8.4
024-480 24 2×1200 16.8


1. When latching relays are installed in equipment, the latch and reset coil should not be powered 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.


Insulation Resistance 100MΩ min (at 500VDC) Item 4.11 of IEC 61810-7
Dielectric Strength

Between Contacts 50Hz 1000VAC Item 4.9   of IEC 61810-7
Between Contact and Coil 50Hz 5000VAC Item 4.9   of IEC 61810-7
Shock Resistance Functional: 98m/s² Item 4.26 of IEC 61810-7
Destructive: 980m/s²
Vibration Resistance 10Hz~55Hz Double amplitude 1.65mm Item 4.28 of IEC 61810-7
Terminals Strength 10N Item 4.24 of IEC 61810-7
Ambient Temperature -40℃~85℃
Relative Humidity 5% to 85% Item 4.16 of IEC 61810-7
Mass 8g Item 4.7 of IEC 61810-7



In case of no tolerance shown in outline dimension: outline dimension ≤1mm tolerance should be ±0.2mm outline dimension >1mm and ≤5mm, tolerance should be ±0.3mm; outline dimension >5mm, tolerance should be ±0.4mm.

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