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GENERAL DATA

Life Expectancy

Minimum operations

Mechanical

3 x 10

7

Electrical

1 x 10

5

at 8 A 240 VAC res.

Operate Time (typical)

7 ms at nominal coil voltage

Release Time (typical)

3 ms at nominal coil voltage

(with no coil suppression)

Dielectric Strength

5000 Vrms coil to contact

(at sea level for 1 min.) 2500 Vrms between contact sets

1000 Vrms between open contacts

Insulation

10

5

megohms min. at 500 VDC,

Resistance

20°C, 50% RH

Insulation

B250 at 2 Form C, unsealed

(according to 

C250 at other relay versions

DIN VDE 0110, 

Overvoltage category: III

IEC 60664-1)

Pollution degree: 3

Nominal voltage: 250 VAC

Dropout

Greater than 10% of nominal coil voltage

Ambient Temperature

At nominal coil voltage

Operating

-40°C (-40°F) to 85°C (185°F)

Storage

-40°C (-40°F) to 85°C (185°F)

Vibration

Break contacts: 5 g at 20…500 Hz

Make contacts: 20 g at 30…500 Hz

Shock

20 g

Enclosure

P.B.T. polyester, UL-94 : V0

Terminals

Tinned copper alloy, P.C.

Max. Solder Temp.

270°C (518°F)

Max. Solder Time

5 seconds

Max. Solvent Temp.

80°C (176°F)

Max. Immersion Time

30 seconds

Weight

14 grams

ZETTLER

electronics

Telephone +44 (0) 1582 599 600  Fax +44 (0) 1582 599 700

 

Logistic Design (UK) Limited. Unit 3, Eagle Centre Way, Luton LU4 9US   www.zettlerrelay.com  sales@zettlerrelay.com

 

 

2001-02-02

AZ742

8 A DPDT MINIATURE 

POWER RELAY

FEATURES

• Dielectric strength 5000 Vrms

• Low height: 15.7 mm

• Epoxy sealed version available

• 8 Amp switching — double pole contacts

• Isolation spacing greater than 10 mm

• Proof tracking index (PTI/CTI) 250

• Surpasses requirements of VDE 0631/0700

• UL, CUR file E43203; VDE 119918

CONTACTS

Arrangement

DPDT (2 Form C)

DPST (2 Form A)

Ratings

Resistive load:

Max. switched power: 2 X 240 W or 2000 VA

Max. switched current: 2 X 8 A

Max. switched voltage: 300* VDC or 400 VAC

*Note:  If switching voltage is greater than 30 VDC,

special precautions must be taken.  Please contact the 

factory.

Rated Load

UL, CUR

8 A at 250 VAC General Use

VDE

8 A at 250 VAC

Material

Silver nickel or silver nickel gold plated

Resistance

< 100 milliohms initially

COIL

Power

At Pickup Voltage

200 mW

(typical)

Max. Continuous

2.4 W at 20°C (68°F) ambient

Dissipation

2.1 W at 40°C (81°F) ambient

Temperature Rise

14°C (25°F) at nominal coil voltage

Max. Temperature

115°C (239°F)

NOTES

1. All values at 20°C (68°F).

2. Relay may pull in with less than “Must Operate” value.

3. Specifications subject to change without notice.

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RELAY ORDERING DATA

COIL SPECIFICATIONS - DC COIL

ORDER NUMBER*

Nominal Coil

Must Operate

Max. Continuous

Coil Resistance

2 Form A

2 Form C

VDC

VDC

VDC

Ohm, ± 10%

3

2.1

7.6

22

AZ742–2A–3D

AZ742–2C–3D

5

3.5

12.7

60

AZ742–2A–5D

AZ742–2C–5D

6

4.2

15.3

90

AZ742–2A–6D

AZ742–2C–6D

9

6.3

22.9

200

AZ742–2A–9D

AZ742–2C–9D

12

8.4

30.6

360

AZ742–2A–12D

AZ742–2C–12D

18

12.6

45.9

710

AZ742–2A–18D

AZ742–2C–18D

24

16.8

61.2

1,440

AZ742–2A–24D

AZ742–2C–24D

36

25.2

92.0

3,140

AZ742–2A–36D

AZ742–2C–36D

48

33.6

122.0

5,700

AZ742–2A–48D

AZ742–2C–48D

60

42.0

153.0

7,500

AZ742–2A–60D

AZ742–2C–60D

110

77.0

280.0

25,200

AZ742–2A–110D

AZ742–2C–110D

* Add suffix “E” for sealed version. “2C” : 2 Form C, contact material AgNi; “2A” : 2 Form A, contact material AgNi; “2CG” : 2 Form C, contact material

AgNi gold plated; “2AG” : 2 Form A, contact material AgNi gold plated.

2001-02-02

ZETTLER

electronics

Telephone +44 (0) 1582 599 600  Fax +44 (0) 1582 599 700

 

Logistic Design (UK) Limited. Unit 3, Eagle Centre Way, Luton LU4 9US   www.zettlerrelay.com  sales@zettlerrelay.com

 

 

AZ742

MECHANICAL DATA

[2.5]

.098

[5.0]

.197

[5.0]

.197

VIEWED TOWARDS TERMINALS

PC BOARD LAYOUT

.591

[15.0]

[5.0]

.197

.197

[5.0]

[15.0]

[15.7]

.618

[3.9]

.154

[0.9]

6X .035

8X ø.050

[ø1.3]

6X .020

[0.5]

.295

[7.5]

[2.5]

.098

.591

5

[12.7]

0.500

[7.5]

.295

[7.5]

.295

[29.0]

1.142

[ø0.6]

2X ø.024

WIRING DIAGRAMS

VIEWED TOWARDS TERMINALS

1

2

7

4

6

3

8

Max.

Max.

Max.

*

*

*

Not used on 2 Form A relay

 

2 Form C

5

1

2

7

4

8

2 Form A

Dimensions in inches with metric equivalents in parentheses. Tolerance:  ± .010"

HARDWARE

For P.C.B. mount:

Socket EC50

Retaining Clip MP16 / MH16

For DIN rail mount:

Socket ES50

Retaining Clip MS16

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AZ742

ZETTLER

electronics

Telephone +44 (0) 1582 599 600  Fax +44 (0) 1582 599 700

 

Logistic Design (UK) Limited. Unit 3, Eagle Centre Way, Luton LU4 9US   www.zettlerrelay.com  sales@zettlerrelay.com

 

 

2001-02-02

Ambient temperature  [°C]

B

A

U

B

/U

N

0

I

N

=12 A

10

20

30

40

50

60

70

80

90

100

0,6

0,8

1,0

1,2

1,4

1,6

1,8

2,0

2,2

2,4

2,6

2,8

3,0

1

2

3

A - Cold coil (T

coil

 = T

ambient

)

B - Hot coil (1,1 x U

N

), contact load = I

N

1 - no load on contacts

2 - half of rated load on contacts

3 - rated load on contacts

Coil operating range

Breaking capacity [kVA]

0

0,4

0,8

1,2

1,6

2,0

N

u

m

b

e

r

o

f

cycl

e

s

10

4

10

5

10

6

10

7

2,4

2,8 3,0

Electrical life at 250 VAC, resistive load

 

Ambient temperature  [˚C ]

B

A

U

B

/U

N

0

I

N

= 8 A

10

20

30

40

50

60

70

80

90

100

0,6

0,8

1,0

1,2

1,4

1,6

1,8

2,0

2,2

2,4

2,6

2,8

3,0

1

2

3

A - C old coil (T

coil

 = T

ambient

)

 - Hot coil (1,1 x U

N

), contact load = I

N

1 - no load on contacts

2 - half of rated load on contacts

3 - rated load on contacts

Coil operating range

Breaking capacity [kVA]

0

0,4

0,8

1,2

1,6

2,0

N

u

m

b

e

r

o

f

cycl

e

s

10

4

10

5

10

6

10

7

Electrical life at 250 VAC, resistive load

DC voltage [V]

DC

c

u

rr

en

t

[A

]

10

20

30

40 50

100

200

300

0,1

0,5

1

2

5

8

10

50

Max. DC resistive load breaking capacity

Power factor

Red

u

c

ti

o

n

fac

to

r

1,0

0,9

0,7

0,8

0,2

0,9

1,0

0,8

0,3

cos

ϕ

F

0,3

0,4

0,5

0,6

0,4

0,5

0,6

0,7

N

cos

ϕ

 

= N x F

Electrical life reduction factor at inductive AC load