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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 

 

1999-10-06

AZ977

GENERAL DATA

Life Expectancy

Minimum operations

Mechanical

1 x 10

6

Electrical

1 x 10

5

at rated load

Operate Time (max.)

10 ms max. at nominal coil voltage

Release Time (max.)

7 ms max. at nominal coil voltage

(with no coil suppression)

Dielectric Strength

500 VDC coil to contact

(at sea level for 1 min.) 500 VDC between open contacts

Insulation Resistance

100 megohms min. at 20°C, 500 VDC

50% RH

Dropout

Greater than 8.3% of nominal coil voltage

Ambient Temperature

At nominal coil voltage

Operating

-40°C (-40°F) to 115°C (239°F)

Storage

-40°C (-40°F) to 155°C (311°F)

Vibration

0.062" DA at 10-55 Hz

Shock

10 g

Enclosure

P.B.T. polyester

Terminals

Tinned copper alloy, P.C.

Weight

16 grams

20 AMP MINIATURE 

POWER RELAY FOR

AUTOMOTIVE USE

FEATURES

• Low Cost

• Up to 20 Amp switching capability in a compact size

• Coils to 24 VDC

• Small footprint

• 1 Form A and C contacts available

• Vibration and shock resistant

• Designed for high in-rush applications

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.

CONTACTS

Arrangement

SPST (1 Form A)

SPDT (1 Form C)

Ratings

Resistive load:

Max. switched power:

280 W

Max. switched current:  20 A

Max. switched voltage: 150 VDC*

Rated load: 20 A at 14 VDC

* If switching voltage is greater than 30 VDC, special 

precautions must be taken. Please contact the factory.

Minimum Load

5 VDC, 0.1 A

Material

AgSnO2

Resistance

< 50 milliohms initially

(6 V, 1 A voltage drop method)

COIL

Power

At Pickup Voltage

534 mW (Standard)

(typical)

432 mW (Sensitive)

Max. Continuous

2.6 W at 20°C (68°F) ambient 

Dissipation

Temperature Rise

60°C (108°F) at nominal coil voltage

Max Temperature

155°C (311°F)

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SENSITIVE RELAYS

COIL SPECIFICATIONS

ORDER NUMBER*

Nominal Coil

Must Operate

Max. Continuous

Coil Resistance

Form A (SPST)

From C (SPDT)

VDC

VDC

VDC

± 10%

6

3.6

7.8

32

AZ977-1A-6DS

AZ977-1C-6DS

12

7.2

15.6

123

AZ977–1A–12DS

AZ977–1C–12DS

24

14.4

31.2

483

AZ977–1A–24DS

AZ977–1C–24DS

*Add suffix “R” for resistor in parallel with coil. Resistor values: 6V: 180 ohms, 12V: 680 ohms,

24V: 2700 ohms  

1999-10-06

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 

 

AZ977

MECHANICAL DATA

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

RELAY ORDERING DATA

STANDARD RELAYS

COIL SPECIFICATIONS

ORDER NUMBER*

Nominal Coil

Must Operate

Max. Continuous

Coil Resistance

Form A (SPST)

From C (SPDT)

VDC

VDC

VDC

± 10%

6

3.6

7.8

25

AZ977-1A-6D

AZ977-1C-6D

12

7.2

15.6

97

AZ977–1A–12D

AZ977–1C–12D

24

14.4

31.2

384

AZ977–1A–24D

AZ977–1C–24D

[4.5]

.177

[9.0]

.354

.189

[14.1]

.554

FORM A

VIEWED TOWARDS TERMINALS

WIRING DIAGRAMS

[2.6]

.099

[8.0]

.315

87

30

85

86

87a

[4.8]

3X

[11.5]

.453

[23.0]

.906

[26.0]

1.02

FORM C

86 (1)

85

87

86

[6.3]

[0.8]

5X.031

2X.248

30

(8)

30

87 (5)

87a (4)

85 (2)

.610

[15.5]

*Optional resistor

*

*