4-Pin Automotive Relay

Your Leading 4-Pin Automotive Relay Supplier

Zhejiang Qianji Relay Co.,Ltd. Established in 2000, located in Zhejiang, China. It is a modern professional enterprise that researches, develops, produces, and sells relays. The company specializes in producing over 50 series and 1000 specifications of Qianji products, including small relays, high-power relays, automatic relays, timers, solid-state relays, counters, temperature controllers, relay sockets, switches, etc. Our 24V high power relay includes 24 Volt DC power relay, 24V 120V relay, 24V100A high power relay, 24V200A high power relay, etc.

Car Horn Relay
The car horn relay is an electronic control switch for the car horn. The small current controlled by the horn switch can be converted into a large current to drive the horn, greatly reducing the...
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12 Volt Car Relay
The 4-pin relay is a 40A 12v 4-pin relay with a resistor, suitable for heaters and automatic doors.
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4-Pin 12V Automotive Relay
The 4-pin 12V automotive relay consists of a PC flame-retardant housing and a pure copper inner core. High quality materials are durable, heat-resistant, corrosion-resistant, and highly...
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12V 4 Pin Automatic Relay
High quality DC12V 4-pin, 5-pin 6V, 12V, 24V, 20a, 30a, 40a automotive relay automotive relay box.
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12V Automotive Relay 4-Pin
New original car relay, car racing fuse relay box with 6PCS 4-pin 12V 40A relay, 6-slot standard blade fuse relay box wiring for trucks and ships.
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Why Choose Us

Broad Market
There are dealers all over the country and our products are exported to the Middle East, South America, Southeast Asia, Taiwan, South Korea, Australia, Europe, the United States, and other countries and regions.

Quality Assurance
We have passed ISO9001 international quality system certification, and our products have passed non-toxic and environmentally friendly tests; some products have obtained American UL, German TUV certification, CE certification, and CQC certification.

Professional Technical Team
We have been engaged in foreign trade export production of relays for over 20 years and have cooperated with over 200 countries. Our professional salesperson provides you with reliable consulting services and procurement related matters.

OEM & ODM Available
We provide professional ODM customization services, which can be set to the pattern you want on the product. And provide free samples for your reference.

Specifications of 4-Pin Automotive Relay

Contact Ratings
Contact Ratings	1A, 1C
Contact Resistance	100MΩ (1A 6VDC)
Contact Material	AgCdO
Contact Capacity	30A/40A 14VAC
Specification
Insulation Resistance	100MΩ, 500VDC
Dieletric Strength	BCC 750V 1 min
Dieletric Strength	BOC 750V 1 min
Operate Time	10ms/10ms
Terminal Type	PCB
Coil Ratings
Norminal Coil Power	DC: 1.6W 1.9W

Types of 4-Pin Automotive Relay

Car Horn Relay
The car horn relay is an electronic control switch for the car horn. The small current controlled by the horn switch can be converted into a large current to drive the horn, greatly reducing the burden on the switch and extending its service life.

12 Volt Car Relay
The 4-pin relay is a 40A 12v 4-pin relay with a resistor, suitable for heaters and automatic doors. This car relay has standardized dimensions and interfaces, what is the purpose of which is to make it easier to install in the vehicle's electrical system.

4-Pin 12V Automotive Relay
The 4-pin 12V automotive relay consists of a PC flame-retardant housing and a pure copper inner core. High quality materials are durable, heat-resistant, corrosion-resistant, and highly conductive. It has two types of lead out angle sizes, American and European, and the rated power of the coil is 1.6w.

12V 4 Pin Automatic Relay
High quality DC12V 4-pin, 5-pin 6v, 12v, 24V, 20a, 30a, 40a automotive relay box is suitable for most cars, with a long service life and safe control. Protect the safety of the circuit. And with powerful anti vibration function, it is the best choice for automotive relays.

12V Automotive Relay 4-Pin
The new original car relay car racing fuse relay box comes with 6PCS 4-pin 12V 40A relay, 6-slot standard blade fuse relay box wiring for trucks and ships. It is equipped with various sockets, which can effectively regulate the current of the circuit and protect circuit safety.

Product Video

Function of 4-Pin Automotive Relay

Role in Vehicle's Electrical System

The 4 pin automotive relay plays a vital role in ensuring the smooth operation of the vehicle's electrical system. By acting as an intermediary between the control unit and the load, it protects sensitive circuits from potential damage caused by excessive current flow.

Impact on Vehicle Performance

Properly functioning 4 pin automotive relays contribute to optimal vehicle performance. They ensure that essential components receive the required current, allowing them to operate efficiently. For example, a faulty relay can cause dim headlights or difficulty starting the engine.

Installation Requirements of 4-Pin Automotive Relay

Installing a 4 pin relay is straightforward but requires attention to detail:

Identify the Terminals

Locate the four terminals on the relay, typically labeled 85, 86, 30, and 87. These correspond to the coil and switch connections.

Connect the Coil

Attach terminal 85 to ground. This provides a return path for the current. Connect terminal 86 to the control switch or signal source. This setup ensures that the coil is energized when the control signal is applied.

Connect the Load

Terminal 30 is usually connected to the power source. This could be a battery or a power supply. Alternatively, you can connect it directly to the load you intend to control.

Connect the Device

Connect terminal 87 to the device that will be powered when the relay is activated. This device could be a motor, light, or any other high-power component that needs to be controlled.

Test the Connections:

Ensure all connections are secure and properly insulated. Test the relay by applying voltage to the coil terminals (85 and 86) to verify that it switches correctly. The relay should click, indicating it is functioning, and the device connected to terminal 87 should be powered.

Packaging & Delivery

Packing:	Neutral white box and brown cardboard box; Customizable.
Payment:	EXW, FOB, CFR, CIF, DDU;
Payment:	T/T 30% as deposit, 70% paid before delivery.
Delivery time:	It takes 30 to 60 days after advance payment
Shipping:	By logistics; by automobile; by train; by shipping; by air.

Certificate

After-Sales Service

7 Days free return and exchange
One-year quality warranty
Quick delivery
Comprehensive technical support

FAQ

Q: I wonder if you accept small orders?

A: Don't worry. Please feel free to contact us. In order to obtain more orders and provide our customers with more conveners, we accept small orders.

Q: Can you deliver the product to my country?

A: Of course. If you don't have your own freight forwarder, we can help you.

Q: Can you do OEM for me?

A: We accept all OEM orders, just contact us and provide me with your design. We will give you a reasonable price and make samples for you.

Q: How long is your production lead time?

A: This depends on the product and order quantity. Usually, it takes us 15 days to receive the minimum order quantity.

Q: When can I receive a quote?

A: We usually provide you with a quotation within 24 hours after receiving your inquiry. If you are very eager to get a quote. Please call us or let us know in the email so that we can prioritize your inquiry.

Q: How Does a 4-Pin automotive relay Work?

A: 4 pin relays are indispensable in both automotive and industrial applications due to their ability to control high-power devices with low-power signals. In the automotive industry, these relays are vital for managing critical components like headlights, fuel pumps, and cooling fans.

Q: What is the difference between a 4-Pin automotive relay and 5-Pin automotive relay?

A: The difference between a 4 and 5 pin relay is that a 4 pin relay is used to control a single circuit, whereas a 5 pin relay switches power between two circuits.

Q: How to properly test a 4-Pin automotive relay for correct operation?

A: Apply power to the coil pins (85 and 86), and the resistance between pins 87 and 30 should show continuity. This indicates the relay is functioning correctly. This simple test ensures your relay operates properly and is ready for use.

Q: How often should 4-Pin automotive relays be replaced?

A: 4-Pin automotive relays tend to be quite reliable in benign environments, however they have a limited lifetime. Typically something like 50000-100000 operations at full rated load. At lighter loads, the life will increase, generally up to many millions of operations with a negligible load (the so-called mechanical life).

As one of the leading 4-pin automotive relay manufacturers and suppliers in China, we warmly welcome you to buy high-grade 4-pin automotive relay in stock here from our factory. All our products are with high quality and low price.

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