Part Number: CP1A-12V

Manufacturer: Panasonic Electric Works


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of CP1A-12V

Datasheet  CP1A-12V datasheet
Category Relays
Family Power Relays, Over 2 Amps
Manufacturer Panasonic Electric Works
Series CP
Packaging Tube
Part Status Active
Relay Type Automotive
Coil Type Non Latching
Coil Current 53.3mA
Coil Voltage 12VDC
Contact Form SPST-NO (1 Form A)
Contact Rating (Current) 20A
Switching Voltage 14VDC – Nom
Turn On Voltage (Max) 7.2 VDC
Turn Off Voltage (Min) 1 VDC
Operate Time 10ms
Release Time 10ms
Features Sealed – Fully
Mounting Type Through Hole
Termination Style PC Pin
Contact Material Silver Alloy, Cadmium Free
Coil Power 640 mW
Coil Resistance 225 Ohms
Operating Temperature -40°C ~ 85°C

CP1A-12V Introduction

The CP1A-12V relay is an automotive part that is used in many electrical circuits. This guide aims to give a complete overview of the CP1A-12V relay, including its features, specs, applications, and installation instructions. Whether you are a car enthusiast or an expert, this guide will help you understand and use the CP1A-12V relay effectively.

What is a relay?

A relay is a switch that is controlled by electricity and uses an electromagnet to control the flow of electricity in an electrical circuit. It has one or more sets of contacts and a coil. When the coil is turned on, it forms a magnetic field that pulls or pushes the contacts, opening or closing the circuit.

In many situations, relays are used to handle high-current or high-voltage devices with a signal with a lower current or voltage. They separate the control circuit from the circuit being managed, which makes control safer and more effective.

Introduction to the CP1A-12V Relay

The CP1A-12V relay is a type of automobile relay that is made to work in cars. It is a Single-Pole, Single-Throw (SPST) relay, which means it has one usually open (NO) contact that can be open or closed depending on whether the coil is on or off.

The CP1A-12V relay can handle up to 20 A of power and works at a voltage of 12 V.It is often used in cars to handle headlights, fans, motors, and other electrical parts that need high-current switching, such as headlights, fans, and motors.

This relay is a reliable and long-lasting way to control and protect different devices and connections in an automobile’s electrical system. Its small size and standard pin arrangement make it easy to add to different types of vehicles.

In the parts that follow, we’ll talk about the CP1A-12V relay’s features, specifications, uses, and installation instructions. This will help you understand what it can do and how to use it effectively in automotive settings.

Features of the CP1A-12V Relay

  • SPST Configuration: The CP1A-12V relay is a single-pole, single-throw relay, which means it has one usually open (NO) contact that opens or closes when the coil is turned on or off. Electrical lines can be turned on and off easily with this setup.
  • Rating for High Current: The CP1A-12V relay can handle up to 20 A of current. Because it can handle a lot of current, it can be used to control high-power devices and parts in automotive applications.
  • Compatibility with 12V Voltage: The CP1A-12V switch is made to work with a voltage of 12V, which is often found in the electrical systems of cars. This makes it easy to connect the device to the vehicle’s power source.
  • Switching is Reliable: The relay’s switching is reliable, so it will keep working the same way over time. It can control electrical circuits in a reliable way, so it can be used in important automotive applications.
  • Size: The CP1A-12V relay is small and takes up little room. This makes it easy to install in different types of vehicles. Its small size makes it great for places where there isn’t much room.
  • Durable Construction: The CP1A-12V relay is made of high-quality materials that can stand up to the harsh conditions of an automotive setting. It stands up well to vibrations, changes in temperature, and other environmental forces.
  • Standardised Pin Configuration: The relay has a standard configuration for its pins, which makes it easier to install and repair. This makes sure that it works with current relay sockets and wiring harnesses, which saves time and effort during installation.
  • Electrical Protection: The CP1A-12V relay has safety features built in to protect both the relay and the circuitry it is attached to. It may have features like surge reduction, diode protection, and a sealed case to make it more reliable and last longer.

The CP1A-12V relay uses these features to control electrical circuits in automotive applications in a way that is both efficient and reliable. Its high current rating, ability to work with different voltages, and dependability make it a popular choice among car fans, professionals, and makers.

Electrical Specifications of the CP1A-12V Relay

  • Coil Voltage: The CP1A-12V switch has a coil voltage of 12 volts, which is typical for electrical systems in cars.
  • Contact Rating: The relay has a contact rating of 20 A, which means it can be used in car circuits with high currents.
  • Contact Resistance: The CP1A-12V relay has a low contact resistance, which makes it easy to move power and keeps energy loss to a minimum.
  • Operating Temperature Range: The switch is made to work in a certain range of temperatures to make sure it works well. The working temperature range of a CP1A-12V relay is usually between -40°C and +85°C, which lets it work reliably in a variety of automotive settings.

Mechanical Specifications of the CP1A-12V Relay

  • measurements: The CP1A-12V relay usually has the same measurements as other relays for cars. It is usually about 28 mm long, 12 mm wide, and 15 mm high, but the exact measurements can change based on who makes it.
  • Options for Mounting: The relay is usually offered with different options for mounting, such as PCB (printed circuit board), socket, or bracket. This lets the installation be done in a way that fits the needs of the programme.
  • Terminal Types: The CP1A-12V switch usually has plug-in terminals or PCB terminals that make it easy and safe to connect to the wiring harness or circuit board.
  • Material of the housing: The housing of a relay is usually made of a strong material, like thermoplastic or thermosetting plastic. These materials stand up well to heat, chemicals, and mechanical stress, so the relay will last and work well for a long time.
  • Protection: Some CP1A-12V switches may have protective enclosures or covers to keep moisture, dust, and other environmental factors from getting to the parts inside. This protection makes the relay last longer and work better in tough circumstances.

Even though these specs are usually associated with the CP1A-12V relay, it is important to note that for exact electrical and mechanical specs, you should always look at the manufacturer’s datasheet or product documentation. This is because electrical and mechanical specs can vary slightly between manufacturers or product versions.

Frequently Asked Questions (FAQs)

● What does a switch do in an automobile’s system?

In automotive systems, a relay is used to handle high-current or high-voltage devices with a signal with a lower current or voltage. It keeps the control circuit separate and safe while keeping the flow of electricity under control.

● Can the CP1A-12V circuit be used for things besides cars?

Yes, the CP1A-12V relay can also be used in non-automotive situations that call for a 12V SPST relay that can handle a lot of power. It can be used in different industrial, business, or residential settings where reliable switching of electrical circuits is needed.

● How should the CP1A-12V switch be wired?

The CP1A-12V relay needs to be wired by connecting the right power source, control signal, and load to its inputs. To make sure the relay is installed correctly and safely, it is important to use the manufacturer’s datasheet or wiring plan.

● What are some typical problems with the CP1A-12V relay?

Relays often break down because of bad wiring, loose links, coil failure, or wear and tear on the contacts. These problems can be fixed by taking troubleshooting steps like checking the connections, trying the relay with a multimeter, or replacing any broken parts.


The CP1A-12V relay stands out as a reliable and versatile automotive relay that is great at handling high-current applications in vehicles. Its SPST design, current rate of 20 A, and compatibility with 12 V voltage make it a good way to control and protect a wide range of electrical components. The CP1A-12V relay can be used in automotive or non-automotive applications.

It has reliable switching performance, is durable, and has a standard pin design that makes it easy to integrate. By following the instructions for installing, wiring, and maintaining the CP1A-12V switch, you can get the most out of it and improve the functionality and performance of your electrical systems. Reach out to ICRFQ for more information on how to use the CP1A-12V connection to its fullest potential. They can give you good ideas that will help you take your thoughts to a higher level.

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