Are all 12 volt relays the same?

The problem is, not all relays are the same. Just because it has the same number/location of terminals, doesn’t mean the relay works for that application. Some relays, when used for the wrong application, can generate a voltage spike over 100V on a traditional 12V system.

How do I choose the right 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.

What is an 87 relay?

87 Differential protective relay A protective relay that functions on a percentage, phase angle, or other quantitative difference between two currents or some other electrical quantities.

What is a micro relay?

A compact design with nominal 12- or 24-volts. Bosch micro relays are used in a wide range of vehicles. They perform switching operations and allow rated switching currents of up to 25 A. Thanks to their design, they are an ideal solution for quick and easy service tasks.

What is 12v relay?

12V DC relay switches are the best solution for full voltage applications, as they allow a low current flow circuit to control a high current flow circuit, like a vehicle’s horn, headlights, auxiliary lamps, fan motors, blower motors and countless pieces of equipment existing on vehicles today.

How many amps does a 12v relay draw?

do small coil based relays (12v coil) draw, typically? Automotive relays are typically 150-200mA (“72 ohm coil”).

What’s the voltage of the voltage sensitive relay?

VOLTAGE SENSITIVE RELAY: The KeyLine Automatic 140 Amp Dual Battery Isolator is all you need to charge Two Battery Systems. Voltage Sensitive Relay (VSR) cuts in at 13.3 volts and cuts out at 12.8 volts to ensure your primary battery is always charged and ready to start your vehicle.

Are there voltage sensitive relays for boat batteries?

Battery switch for your boat, RV, ATV, Camper, Trailer,etc! Video Player is loading. This is a modal window. Voltage Sensitive Relays have been specifically designed for a wide variety of 12V applications.

What is the current capacity of a 12 volt relay?

Typically 12V for passenger vehicles and small craft but also available in 6V for older vehicles and 24V for commercial applications (both auto and marine). This is the current carrying capacity of the high current circuit (s) and is normally between 25A and 40A, however it is sometimes shown as a dual rating on changeover relays e.g. 30/40A.

Which is the best battery isolator for 12V?

Based on dozens of customer reviews and ratings, the followings are the top 10 best-selling 12V Battery Isolators: 12V 140 Amp Dual Battery Smart Isolator by KeyLine – VSR – Voltage Sensitive… Ampper 12V 140Amp Dual Battery Isolator, Battery Voltage Sensitive Relay (VSR)…