What is a 40 amp relay used for?
40 Amp Relays L07-40 Use our relays to give your circuit “switching power” and to take the strain off of brake switches, fan switches, electronic switches or sensors.
How many watts does a 12V relay draw?
The current draw of the coil is not normally shown but is typically 150-200 mA with a corresponding coil resistance of around 80-60 W.
What does 40 60 amp relay mean?
40/60 amp Automotive Relay with Mounting Tab – Five terminal automotive relay with integrated mounting tab. Capable of switching up to 60 amps. Normally closed terminals can switch 40 amps. High power in a small package, this relay can power most equipment existing on vehicles today.
What is the purpose of a relay in a 12V circuit?
In 12-volt automotive circuits, even small resistance amounts can cause significant voltage drop. Relays provide a solution by shortening the required length of the heavy-gauge, power-delivery wire from the battery or alternator to the load.
Can you use a 12V relay for 24V?
Just doubtful. 24V relay never work at 12V weather is a AC or DC voltage. If you want to know the pickup voltage of relay, you just set testing setup with variable voltage source.
What are the 2 circuits of a relay called?
Relays involve two circuits: the energizing circuit and the contact circuit. The coil is on the energizing side; and the relays contacts are on the contact side. When a relays coil is energized, current flow through the coil creates a magnetic field.
How do I choose a 12V relay?
An easy way to determine the limit of a relay is to multiply the rated Volts times the rated Amps. This will give you the total watts a relay can switch. Every relay will have two ratings: AC and DC. You should determine the AC watts and the DC watts, and never exceed these ratings.
How many watts can a 40 amp relay handle?
The specifications you gave are 12-volt and 40-amp of current. The wattage of this automotive relay is 480 watts. Usually manufacturers give a 20% tolerance value for above that value will make that device unsafe to use and cause damage to it.
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