What do the numbers on automotive relays mean?
Represents the rated operating voltage of the relay (that is, the voltage applied to the coil end), at this point some manufacturers will use some numbers to represent their internal specifications, such as HT33067 Can ignore it. Numbers of a Relay 85 and 86 are the coil pins while 30, 87, and 87a are the switch pins.
What is relays and its types?
Relays are electrically operated switches. They are used to control a circuit by a separate low-power signal or to control several circuits with one signal. Relays were first used in long distance telegraph circuits as amplifiers. The three main types of relays are electromechanical, solid-state, and reed.
What does the relay do for the car?
The main relay of an automobile is undoubtedly one of the most important and essential components of a car. It controls the computers and the entire fuel system of your car. The moment you turn the key before you even start the engine, this relay will be activated and without this relay your car’s computer will not get power, your car’s fuel system will not be turned on and as a result your car will not start.
What is automotive 12V relay?
12 Volt Automotive Relays. Automotive relays are for use in 12 volt electrical systems. Relays are used when you need to switch higher currents than a switch can handle, or when you want to isolate an electrical circuit. Our relays have either 5 contacts or 4 contacts. Relays with 5 contacts are called Changeover Relays,…
What is a 5 volt relay?
A 5 volt relay connected to the solar panels is used to control the connection between the battery and charge controller. So, in the morning, when the solar panels produce enough power to flip the relay, the charge controller will connect to the battery and commence charging.
What is a Bosch relay?
Bosch DC relays are used to switch electrical devices featuring high power levels or which are sensitive to voltage loss. Relays relieve the load on control switches and make for small voltage drops with economical conductor cross- sections.