ZETTLER electronics GmbH
Fax +49 89 800 97 200 www.ZETTLERelectronics.com
office@ZETTLERelectronics.com 0 97 800 89 +49 Tel.
Germany Puchheim , D-82178 Junkersstrasse 3,
2003-06-24
GENERAL DATA
Life Expectancy Minimum operations
Mechanical 1 x 107
Electrical 1 x 105at 40 A 14 VDC Res.
Operate Time (max.) 7 ms at nominal coil voltage
Release Time (max.) 5 ms at nominal coil voltage
Dielectric Strength 500 Vrms coil to contact
(at sea level for 1 min.) 500 Vrms contact to contact
Insulation Resistance 100 megohms min. at 500 VDC, 20°C
50% RH
Dropout Greater than 10% of nominal coil voltage
Ambient Temperature
Operating -55°C (-67°F) to 85°C (185°F)
Storage -55°C (-67°F) to 105°C (221°F)
Vibration 0.062" (1.5 mm) DA at 10-40 Hz
Shock 100 m/s2
Enclosure P. B.T. polyester
Terminals Tinned copper alloy
0.25 Quick Connect
Note: Allow suitable slack on leads when wiring
and do not subject the terminals to excessive
force.
Weight 31 grams
AZ973
40 AMP
AUTOMOTIVE
RELAY
FEATURES
•40 Amp contact rating
•High momentary carry current (60A)
•High operating temperature (85°C)
•SPST (1 Form A), SPDT (1 Form C)
•Quick connect terminals
•Metal or plastic mounting bracket available
•Resistor or diode parallel to coil available
CONTACTS
Arrangement SPST (1 Form A)
SPDT (1 Form C)
Ratings Resistive load:
Max. switched power: 560 W (SPST)
560 W (N.O.)
420 W (N.C.)
Max. switched current: 40 A (SPST)
40 A (N.O.)
30 A (N.C.)
Max. switched voltage: 75 VDC
Material Silver tin oxide
Resistance < 100 milliohms initially
(6 V, 1 A voltage drop method)
COIL
Power
At Pickup Voltage 0.68 W
(typical)
Max. Continuous 5.1 W at 20°C (68°F)
Dissipation
Temperature Rise 52°C (94°F) at nominal coil voltage
Temperature Max. 155°C (311°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.
2003-06-24
ZETTLER electronics GmbH
Fax +49 89 800 97 20 0 www.ZETTLERelectron ics.com
office@ZETTLERelectronics.com 0 97 800 89 +49 Tel.
Germany Puchheim , D-82178 Junkersstrasse 3,
AZ973
RELAY ORDERING DATA
COIL SPECIFICATIONS
Nominal Coil Must Operate Max. Continuous Coil Resistance
VDC VDC VDC Ohm ± 10%
6 3.9 10.6 22
12 7.8 21.0 85
24 15.6 42.2 350
AZ973-1C-12DC2R1
RELAY ORDERING DATA
Blank - Standard no diode, no resistor
R1 - 680 Ohm, ½ W resistor in parallel with 12 V coil
2700 Ohm ½ W resistor in parallel with 24 V coil
R2 - 820 Ohm, ½ W resistor in parallel with 12 V coil
3200 Ohm ½ W resistor in parallel with 24 V coil
D1 - 1N4007 diode in parallel with coil, anode
on #86 terminal
D2 - 1N4007 diode in parallel with coil, cathode
on #86 terminal
D3 - 1N4004 diode in parallel with coil, anode
on #86 terminal
D4 - 1N4004 diode in parallel with coil, cathode
on #86 terminal
C1 - Plastic dust cover with steel mounting bracket
C2 - Plastic dust cover with plastic mounting bracket
C3 - Plastic dust cover
C4 - Plastic dust cover, shrouded, sealed
24D - 24 volt coil
12D - 12 volt coil
6D - 6 volt coil
1A - SPNO Single pole normally open
1C - SPDT Single pole double throw
Basic series designation - AZ973
AZ973
ZETTLER electronics GmbH
Fax +49 89 800 97 20 0 www.ZETTLERelectron ics.com
office@ZETTLERelectronics.com 0 97 800 89 +49 Tel.
Germany Puchheim , D-82178 Junkersstrasse 3,
2003-06-24
MECHANICAL DATA
868585 86
86
85
D2,D4D1,D3
R1,R2
WIRING DIAGRAMS
.039
[1.0]
[26.2]
1.032
.445
[11.3]
Version C2
Version C4
Version C1
[12.0]
.472
.681
[17.3]
[16.5]
.650
.354
[9.0]
are typical for all other versions
Dimensions shown for Version C3
.665
Viewed Toward Terminals
[16.9]
ø.228
[ø5.8]
[ø5.3]
ø.209
[2.0]
.079
.630
[16.0]
[11.5]
[6.3]
.248
.106
[8.4]
.331
[2.7]
.453
[26.2]
1.032
[26.2]
1.032
.032
.315
[0.8]
.705
[17.9]
Note:
[8.0]
Version C3
[23.7]
.933
87A
85
86
30
86
87
87
85
30
FORM C
FORM A [46.5]
1.831
[35.5]
1.398
[35.5]
1.398
[44.9]
1.768
5 x .032
[0.8]
[6.3]
5 x .248
[11.5]
5 x .453 85
87
86
87A
30
[1.8]
.071
[20.0]
.787
[9.0]
.354
[4.4]
.173
[6.9]
.272
[17.9]
.705
.665
[16.9]
[8.4]
.331
[8.0]
.315
Dimensions in inches with metric equivalents in parentheses. Tolerance: ± .010"
Sockets & Har dware for AZ973
.945
[24.0]
.090
[2.3]
.472
[12.0]
.945
[24.0]
1.205
[30.6]
[2.0]
.079
.905
.059
[1.5]
1.091
[27.7]
1.300
[33.0]
[9.0]
.245
[6.2]
.075
.354
.345
[8.8]
.945
.659
[24.0]
5x ø.116
[ø2.9]
[16.7]
VIEWED TOWARDS TERMINALS
PCB LAYOUT
ST9721-U2
.236
[6.0]
.200
[5.1]
.375
[9.5]
.692
[17.6]
.138
[3.5]
[1.9]
ST9721-U3
1.417
[36.0]
1.043
[26.5]
[23.0]
ST9721-U1
.571
[14.5]
[26.5]
1.043
AZ973
ZETTLER electronics GmbH
Fax +49 89 800 97 20 0 www.ZETTLERelectron ics.com
office@ZETTLERelectronics.com 0 97 800 89 +49 Tel.
Germany Puchheim , D-82178 Junkersstrasse 3,
2003-06-24
Note: Recommended receptical connector Amp Part numbers are 5-160558-9 or 5-1605-26-9
