AZ
9/3/98W
AZ9721
40 AMP
AUTOMOTIVE
RELAY
FEATURES
•40 Amp contact rating
•High momentary carry current (60A)
•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: 480 W (SPST)
480 W (N.O.)
360 W (N.C.)
Max. switched current: 40 A (SPST)
40 A (N.O.)
30 A (N.C.)
Max. switched voltage: 75 VDC
Minimum Load 5 VDC, 0.1 A
Material Silver alloy
Resistance < 50 milliohms initially
(24 V, 1 A voltage drop method)
GENERAL DATA
Life Expectancy Minimum operations
Mechanical 1 x 107
Electrical 1 x 105at rated load
Operate Time (typical) 10 ms at nominal coil voltage
Release Time (typical) 10 ms at nominal coil voltage
(with no coil suppression)
Dielectric Strength 750 Vrms coil to contact
(at sea level for 1 min.) 750 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 70°C (158°F)
Storage -55°C (-67°F) to 155°C (311°F)
Vibration 0.062" DA at 20-200 Hz
Shock 20 g
Enclosure P. B.T. polyester
Terminals Copper alloy
0.25 Quick Connect
Weight 40 grams
COIL
Power
At Pickup Voltage 0.76 W
(typical)
Max. Continuous 4.0 W at 20°C (68°F)
Dissipation
Temperature Rise 63°C (113°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.
AZ
9/3/98W
AZ9721-1C-12DC2R1
COIL SPECIFICATIONS
Nominal Coil Must Operate Max. Continuous Coil Resistance
VDC VDC VDC ± 10%
12 7.8 17.8 80
24 17.0 36.0 320
RELAY ORDERING DATA
AZ9721
Blank - Standard no diode, no resistor
R1 - 680 Ohm, ½ w resistor in parallel with 12 V coil
2700 Ohm ½ w resistor in paralle 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 #85 ter minal
D2 - 1N4007 diode in parallel with coil, cathode
on #85 ter minal
D3 - 1N4004 diode in parallel with coil, anode
on #85 ter minal
D4 - 1N4004 diode in parallel with coil, cathode
on #85 ter minal
C1 - Plastic dust cover with steel mounting bracket
C2 - Plastic dust cover with plastic mounting bracket
C3 - Plastic dust cover
24D - 24 volt coil
12D - 12 volt coil
1A - SPNO Single pole nor mally open
1C - SPDT Single pole double throw
Basic series designation - AZ9721
AZ
9/3/98W
5x.433
[11.0]
ø.217
[ø5.5]
5x.248
[6.3]
5x.177
[4.5]
.346
[8.8]
[9.6]
.378 1.102
[28.0]
.394
.984
[25.0]
[10.0]
.031 5x
[0.8]
.661
.150
[3.8]
ø.217
[ø5.5]
[6.3]
5x.248
5x.177
[4.5]
[28.0]
[9.6]
.346
[8.8]
1.102
.378
5x.433
[11.0]
1.102
[28.0]
[16.8]
86
85
86
86
85
30
85
87
86
85
87
[6.3]
5x.248
[4.5]
5x.177
86
30
85 87A
[25.0]
.984
.098
[2.5]
5x.031
[0.8]
.661
[16.8]
1.102
[28.0]
.165
[4.2]
5x.031
[0.8]
.661
1.102
[16.8]
[28.0]
1.102
[28.0]
[9.6]
.346
[8.8]
.378
5x.433
[11.0]
.394
[25.0]
.984
[10.0]
AZ9721-C2
1A
D2,D4 D1,D3
1C
R1,R2
AZ9721-C3 Wiring Diagram
AZ9721-C1
AZ9721
MECHANICAL DATA
AZ9721
9/3/98W
.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
Sockets & Hardware for AZ9721
Note: Recommended receptical connector Amp Part numbers are 5-160558-9 or 5-1605-26-9
