CB1AH-12V Relays

Turn On Voltage (Max):	7 VDC
Coil Resistance:	80 Ohms
Coil Power:	1.8 W
Contact Material:	Silver Alloy, Cadmium Free
Operating Temperature:	-40°C ~ 85°C
Termination Style:	Plug In, Quick Connect - Multiple Sizes
Mounting Type:	Socketable
Features:	Sealed - Fully
Release Time:	15ms
Operate Time:	15ms
Turn Off Voltage (Min):	1.2 VDC
Series:	CB
Switching Voltage:	14VDC - Nom
Contact Rating (Current):	70A
Contact Form:	SPST-NO (1 Form A)
Coil Voltage:	12VDC
Coil Current:	150mA
Coil Type:	Non Latching
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to Automotive Relays

Automotive relays are electrical switches for electronically controlling a circuit. They are used in many applications in the automotive industry, such as car alarms, lights, traffic signals, electric window motors, and fuel pumps. Automotive relays come in many different varieties, like single pole double throw (SPDT) relays, two pole double throw (2PDT) relays, and solid state relays.

The CB1AH-12V

The CB1AH-12V is a single-pole double-throw (SPDT) relay with changeover contacts. It has a 12-volt coil that applies power to the contacts when the relay is energized. It can be used to control high-current circuit switching in automobiles, from low-current signals from sensors or switches.CB1AH-12V is equipped with a plastic dust cover that keeps dust and moisture away from the moving parts of the relay. The housing is also designed to ensure minimal wear of the contacts and prolong the lifetime of the relay.

Application Field

The CB1AH-12V is used in several applications in the automotive industry, such as alarm systems, tailgate locks, starter circuit control, aftermarket power window or power seat control, and fuel pump control. It can also be used in non-automotive industrial applications, such as motors, contactors, and solenoids.

Working Principle

The CB1AH-12V functions by detecting the magnetic field of the current passing through the coil. When the coil is energized, a current is created and the magnetic field opens the contacts. When the power is discontinued, the contacts close.The contacts of the relay are rated for 30A at 12V DC, and can be used for higher loads with the appropriate surge rating. It has an operating temperature range from -40°C to +85°C.

Installation

The CB1AH-12V must be installed in a location that is protected from dust, humidity, and water. High vibration or shock should also be avoided to keep the contacts from misfiring.The relay should be secured tightly with screws to prevent any movement of the relay during operation. The device should be close to the power source to reduce the voltage drop.

Safety

When installing the relay, it is important to disconnect the power source first and make sure that there is no voltage present at the terminals. This reduces the risk of electrical shock and damage to the equipment. Furthermore, it is important to consider the amount of current their equipment can manage. Connecting relays that are not rated for a high enough load may cause overheating and could result in short circuits or fire.

Conclusion

The CB1AH-12V is an SPDT type automotive relay used in many applications in the automotive industry, such as car alarms, electric window motors, and fuel pumps. It functions by detecting the magnetic field of the current passing through the coil and is rated for currents of up to 30A at 12V DC. When installing a CB1AH-12V, it is important to consider the appropriate load rating and safety issues to protect the equipment from electrical shock and damage.

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