Small size, light weight.

Low coil consumption.

PC board mounting.

Suitable for household electrical appliances, automation system, electrical equipment, instrument, meter

telecommunication facilities and remote control facilities.

Ordering Information

NT74 1C S 10 DC12V N

G

1

2

3

4

5

6

7

Rated

Max.

Dash

numbers

Coil voltage

VDC

Coil

resistance

10%

Pickup

voltage

VDC(max)

(70%of rated

voltage )

Release voltage

VDC(min)

(10% of rated

voltage)

Coil power

consumption

W

Operate

Time

ms

Release

Time

ms

Contact Data

Contact Arrangement

1A SPSTNO

1C

SPDT(B-M)) 1C2

SPDT(B-M)

Contact Material

AgNi

AgSnO

2

Contact Rating (resistive)

1A,1C,1C2:8A,10A/250VAC,30VDC

2A,2B,2C:5A/250VAC,30VDC

Max. Switching Power

1A,1C,1C2:300W 2500VA

Max. Switching Voltage

440VAC 125VDC

Max. Switching Current:10A

Contact Resistance or Voltage drop

100m

Item 4.12 of IEC 61810-7

5

Operational

Electrical

10

Item 4.30 of IEC 61810-7

7

life

Mechanical

10

Item 4.31 of IEC 61810-7

Coil Parameter

4 Contact rating:1A,1C:8A,10A/250VAC 30VDC;

2A,2B,2C:5A/250VAC 30VDC

5 Coil rated voltage(V):DC:5,6,9,12,18,24,48,60

6 Contanct material: N: AgNi; S:AgSnO

2

7 Contact plating: Nil:Standard; G:Gold plated

1 Part number:NT74

2 Contact arrangement:1A:1A;1C:1C;C2:1C2;

2A:2A;2B:2B;2C:2C

3 Enclosure:S: Sealed type

Z: Dust cover

2.Pickup and release voltage are for test purposes only and are not to be used as design criteria.

005-220

5

6.5

113

3.5

0.5

006-220

6

7.8

164

4.2

0.6

009-230

9

11.7

360

6.3

0.9

012-230

12

15.6

620

8.4

1.2

0.22

10

5

0.23

10

5

Features

93

Operation condition

Insulation Resistance

1000M

min (at 500VDC)

Item 7 of IEC 61810-5

Dielectric Strength

Between contacts

50Hz 1000V 1min

Item 6 of IEC 61810-5

Between contact and coil

50Hz 5000V 1min

Item 6 of IEC 61810-5

2

Shock resistance

functional: 980m/s

IEC68-2-27 Test Ea

Vibration resistance

10~55Hz double amplitude NO: 1.65mm

IEC68-2-6 Test Fc

Terminals strength

10N

IEC68-2-21 Test Ua1

Solderability

260

5

3

0.5s

IEC68-2-20 Test Ta method 1

Ambient Temperature

-40

~85

Relative Humidity

35%~85% (at 40 )

IEC68-2-3 Test Ca

Mass

8g

Dimensions

NOTES 1).Dimensions are in millimeters.

2).Inch equivalents are given for general information only.

94

NT 74

Dimension

mm /inch

2A

DPSTNO

2B(DPSTNC)

2C

DPDT(B-M)

2A,2B,2C:150W 1250VA

018-250

18

23.4

1295

12.7

1.8

024-250

24

31.2

2350

16.8

2.4

0.25

10

5

048-290

48

62.4

8000

33.6

4.8

060-290

60

78

12500

42

6.0

0.29

10

5

Between contact sets

50Hz 2500V 1min

Item 6 of IEC 61810-5

(no coil voltage) NC: 0.8mm

2

2

survival: NO:98m/s NC:49m/s

1A

1C

2A

2C

1C2

2B

Mounting (Bottom view)

Wiring diagram (Bottom view)

1C

1C2,2C

2B

1A

NT74

28.5

12.5

10.1

2A

22.1

6- 1.3

3.2

0.126

0.051

0.870

0.744

0.126

0.051

6- 1.3

18.9

3.2

0.051

0.744

0.126 0.126

8- 1.3

18.9

3.2 3.2

0.051

0.200

0.744

5- 1.3

18.9

5.08

0.126

0.126

0.051

0.744

5- 1.3

3.2

3.2

18.9

0.016

0.031

0.398

0.008

0.024

1.122

0.008

0.065

0.30

10.1

0.2

28.5

0.2

2- 0.6

7.62

1.65

6-0.4

0.8

E169380

C

US

R

VDE

40019280

Safety approvals

Safety approval

Load

VDE

1A,1C,1C2:8A,10A/250VAC,30VDC

2A,2C:5A/250VAC,30VDC

8A/250VAC

UL&CUR

Ningbo Huaguan Electronics Corporation LTD.