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152
relays & power distribution
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Change Over Relays
Change over relays can be used in
applications that require Change Over
Relays, Normally Open Relays or Normally
Closed Relays.
Relays
The best solution for full voltage applications. Ideal for use with head lamps, auxiliary lamps,
fog horns, fan motors, window lifters, air conditioners, heated rear windows or a myriad of
other equipment existing on vehicles today. Engineered to deliver superior performance over
a long life.
OPERATING CHARACTERISTICS:
Permissible ambient temperature = -40°C to 125°C (-40°F to 257°F)
Mechanical Life–no load = 10,000,000 operations (frequency 18,000 operations/hr)
The following applies for all relays unless otherwise noted:
- Operating voltage = 8–16V at 12V; 16–32V at 24V
- Contact voltage drop(1) = Typ. 50MV at 10A
- Insulation resistance( 1) = 20M 1 Min. (DC 500V)
- Operate time(1) = 20ms Max.
- Release time(1) = 20ms Max.
- Resistive load N.O. = 50A at 14V DC
- Resistive load N.C. = 30A at 14V DC
- Dielectric strength N.O.(1) = AC 500V, 50/60Hz 1 min
- Dielectric strength N.C.(1) = AC 500V, 50/60Hz 1 min
- Life Expectancy Mechanical = 10,000,000 operations (frequency 18,000
operations/hr)
- Life Expectancy Electrical = 100,000 operations (frequency 1,200 operations/
hr)
A change over relay switches current from one user to another. Change over
relays are used for switching from one horn to the fan, from forward to backward
movement of the sliding roof, from opening to closing electrically operated windows
and for two-stage uses such as fans and some rear window heating systems.
* ground diode accordingly
mounting bracket
part no. description
73980 NC/NO 12 volt, 30/50 amp
mounting bracket with resistor
part no. description
73982 NC/NO 24 volt, 15/20 amp
Resistor reduces voltage spikes which can damage
sensitive electronic equipment.
no mounting bracket
part no. description
73984 NC/NO 12 volt, 30/50 amp
with diode
part no. description
73986 NC/NO 12 volt, 30/50 amp
The same as 73984 with a diode. Diode eliminates voltage
spikes which can damage sensitive electronic equipment.
INFORMATION
IP54 Rated
IP54 Rated
IP54 Rated
IP54 Rated