NT73 -2

Small size, light weight, heavy reverse power.

Low coil power consumption.

PC board mounting.

Suitable for automation control, telecommunication equipment, household electrical appliances and machinery electrical

facilities.

19.5

15.6

15.3

Ordering Information

NT73-2 C S

10 DC12V

0.36

1

2

3

4

5

6

Rated

Max.

Dash

numbers

Coil voltage

VDC

Coil resistance

10%

Pickup

voltage

VDC(max)

(75%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

1B

SPSTNC

1C

SPDT(B-M)

Contact Material

AgCdO

AgSnO

2

Contact Rating (resistive)

5A,6A,10A,12A,15A/125VAC,28VDC;20A/125VAC,16VDC;

Max. Switching Power

420W 2500VA

Max. Switching Voltage

110VDC 380VAC

Max. Switching Current:20A

Contact Resistance or Voltage drop

100m

Item 3.12 of IEC255-7

5

Operational

Electrical

10

Item 3.30 of IEC255-7

7

life

Mechanical

10

Item 3.31 of IEC255-7

Coil Parameter

4 Contact rating

5A,10A,12A,15A/125VAC 28VDC

6A/277VAC

20A/125VAC 16VDC10A/250VAC 0.8W

T V:6A/250VAC 28VDC

5 Coil rated voltage(V)

DC:3,5,6,9,12,24,48

6 Coil power consumption

0.36:0.36W

0.45:0.45W

0.8:0.8W

1 Part number

NT73-2

2 Contact arrangement

A:1A

B:1B

C:1C

3 Enclosure

S: Sealed type

NIL: Dust cover

03001003508

LR814321

R50050438

PATENT NO.:95 2 18643.8

E158859

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

003-360

3

3.9

25

2.25

0.3

005-360

5

6.5

70

3.75

0.5

006-360

6

7.8

100

4.50

0.6

009-360

9

11.7

225

6.75

0.9

012-360

12

15.6

400

9.00

1.2

024-360

24

31.2

1600

18.0

2.4

048-360

48

62.4

6400

36.0

4.8

003-450

3

3.9

20

2.25

0.3

005-450

5

6.5

55.6

3.75

0.5

006-450

6

7.8

80

4.50

0.6

009-450

9

11.7

180

6.75

0.9

012-450

12

15.6

320

9.00

1.2

024-450

24

31.2

1280

18.0

2.4

048-450

48

62.4

5120

36.0

4.8

003-800

3

3.9

11

2.25

0.3

005-800

5

6.5

31

3.75

0.5

006-800

6

7.8

45

4.50

0.6

009-800

9

11.7

101

6.75

0.9

012-800

12

15.6

180

9.00

1.2

024-800

24

31.2

720

18.0

2.4

048-800

48

62.4

2880

36.0

4.8

0.36

10

5

0.45

10

5

0.80

10

5

Features

Operation condition

Insulation Resistance

250M

min (at 500VDC)

Item 7 of IEC255-5

Dielectric Strength

Between contacts

50Hz 750V

Item 6 of IEC255-5

Between contact and coil

50Hz 1500V

Item 6 of IEC255-5

2

Shock resistance

100m/s

11ms

IEC68-2-27 Test Ea

Vibration resistance

10~55Hz double amplitude 1.5mm

IEC68-2-6 Test Fc

Terminals strength

5N

IEC68-2-21 Test Ua1

Solderability

235

2

3

0.5s

IEC68-2-20 Test Ta method 1

Ambient Temperature

-55~85

Relative Humidity

93% (at 40 )

IEC68-2-3Test Ca

Mass

9.5g

Qualification inspection:

Perform the qualification test as specified in the table

of IEC255-19-1 and minimum sample size 24.

Safety approvals

Safety approval

UL

T V

CQC

Dimensions

Reference Data

20A/125VAC,16VDC 12A/28VDC

10A/250VAC 6A/277VAC

1/3HP 125VAC/277VAC

Insulation

B-class F-class

Load

6A/250VAC 28VDC

7A/250VAC

Dimensions

Mounting (Bottom view)

NOTES 1).Dimensions are in millimeters.

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

Wiring diagram(Bottom view)

10

8

6

4

2

NT73-2

5- 1.3

U

mm /inch

0.051

0.480

0.079

C

US

R

Ningbo

Huaguan Relay Corporation LTD.

6A/250VAC,277VAC;10A/250VAC

(15A 0.45W ; 20A 0.8W coil only )

Motor load: 1/3HP 125VAC ; 1/3HP 277VAC

0.039

0.020

0.039

0.016

0.472

0.480

0.079

0.055

0.768max.

0.614max.

15.6max.

19.5max.

NHG RELAYS