Power Relay
Professional relay production
Your professional power relay supplier
Zhejiang QIANJI Relay Co., Ltd. is a top relay production supplier in China. We specialize in producing various types of relays, including power relays, PCB relays, automotive relays, and dozens of other types
Quality assurance
Our relays are equipped with professional testing equipment to strictly control quality. And the product quality has passed the European and American CE 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
ODM customization services
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
Widely applicable
We provide professional relay solutions to cater to different industries, such as automation equipment, household appliances, and automotive relay control
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12V60A High Power RelayThe 12V60A high-power relay can be automatically adjusted, with a short reaction time and automatic switching of electromagnetic relays. It is a brand new configuration and a popular style.read more -
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High Power Relay 80A12VHigh power relay 80A12V, voltage 12V, current 80A, DC12V DC heavy-duty continuous relay, capable of handling high current applications, heavy-duty switches. Silver alloy terminal contacts have the...read more -
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24V100A High Power Relay24V high-power relay 100A220V 100A automatic conversion power relay 8-pin DPDT transparent shell 100A electrical relay.read more -
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150A12V High Power RelayThe 150A12V high-power relay consists of a PC casing and a pure copper inner core. Silver alloy contacts. Normally closed relay, typical high-power relay, easy to install, automatic control...read more -
![24V 100A Power Relay For Trucks]()
24V 100A Power Relay For TrucksOur 24V 100A power relay for trucks is engineered to meet the demanding electrical requirements of heavy trucks and automotive vehicles. Rated for continuous 100 amp high current switching with a...read more -
![Heavy Duty Relay 24V 100A]()
Heavy Duty Relay 24V 100AThe Heavy Duty Relay 24V 100A is engineered to deliver dependable high-current power switching for automotive, truck, and industrial equipment. This rugged relay handles up to 100 amps at 24 volts DCread more -
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60A 12v Power Relay12V 60A Heavy Duty High Power Automotive & Marine Relay | Fast Automatic Electromagnetic Switching for Universal Applicationsread more -
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Relay Jqx 62f 120aThe QX-62F 120A relay is a very superior performance electrical element used widely in industrial control systems, automation equipment, and an electric distribution systemread more -
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Relay 12v 25aRelay 12V 25A is an electrical switch device that is used to control high-power loads. It has wide uses in the field of automobiles, electrical equipment, and industrial automation. Its main...read more -
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48v 30a RelayThe QIANJI-brand 48V 30A relay is designed for the particular purpose of high voltage and current control in electrical equipment. This relay could provide a function of effective and stable...read more -
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Relay 40a 220vRelay 40A 220V is a high-performance electrical control component widely used in industrial and home automation, capable of withstanding current loads of 40 amperes and supporting 220V voltage.read more -
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24v 80a Relay24V 80A relay is a kind of high-performance and highly reliable electrical control equipment, widely used in all kinds of industrial automation, mechanical equipment, household appliances, automobilesread more
What is a power relay
Power relay is an electrical device mainly used to control high-power circuits. It can open or disconnect high-power circuits under the control of low-power signals, playing a role in signal amplification and isolation. Power relays typically consist of an electromagnetic excitation system and a mechanical contact system. The electromagnetic excitation system receives low-power signals and generates sufficient force to control the closure or disconnection of mechanical contacts, thereby controlling the opening and closing of high-power circuits.
Applicable fields of power relays
QIANJI Relay specializes in producing power relays and is a top relay supplier in China
industrial control
Power relays are widely used in industrial control fields, such as the control of motors, pumps, fans, lighting equipment, heating equipment, etc. In these application scenarios, power relays can achieve remote control and automation control, improving production efficiency and safety.
Agricultural sector
In the agricultural field, the power relay is usually used for the control of agricultural machinery equipment, such as irrigation equipment, spray equipment, livestock feeding equipment, etc. Power relays can achieve automated control, improving the quality and efficiency of agricultural machinery equipment.
Transportation sector
In the field of transportation, power relays are commonly used for controlling equipment such as traffic lights and elevators. Power relays can quickly respond to signals, perform accurate equipment control, and improve the safety and stability of transportation facilities.
Home appliance industry
In the field of household appliances, power relays are commonly used for controlling household appliances such as air conditioners, refrigerators, and washing machines. Power relays can achieve automated control and improve the safety and energy efficiency of electrical equipment.
In principle, the control circuit of the power relay amplifies the trigger input signal and controls the high-power load connected to the relay by activating the electromagnetic relay. Electromagnetic relay is the core component of power relay, including a coil and a mechanical switch. When the coil receives sufficient current activation, the mechanical switch will open or close to control the on/off of the power load.
User Evaluation
Buyers from the Middle East
Buyers from Europe and America
Buyers from Asia
China's Top Relay Supplier - QAINJI Relay
Company professionallyproduces more than 50series and more than 1000 specifications for Qianl product such as miniature relay, high power relay, indraughirelay, auto relay, imer, solid state relay, counter, temperature controller, relay socket, switch and so on.Company insist on attracingmany high-tech talent person and strong technical force, advanced production technology, testing equipment, scientific managementand efective, in order to provide a reliable production line. Further more, the company has obtained 1S09001 international qualitysystem certifi cation,the products have been approved the nontoxic and environmental protection test; some products have passedCE
certification,CQC certification.
Accumulated orders
years experience
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Power relay selection considering parameters
What parameters should be considered to determine the power relay type selection
1. Performance parameters
Power relay is a kind of electrical element used to control high power circuit, its performance parameters include rated voltage, rated current, rated power, contact resistance, insulation resistance, mechanical life, etc. Among them, the rated voltage and the rated current are the most basic performance parameters of the power relay, which are used to determine the applicable circuit voltage and current range. Rated power refers to the maximum power that the power relay can withstand, usually multiplied by the rated voltage and rated current. Contact resistance and insulation resistance are important indicators to measure the contact quality and insulation performance of power relay, and the mechanical life refers to the life of power relay under normal use conditions. In the selection, it is necessary to select the appropriate power relay according to the voltage, current and power requirements of the actual circuit, and pay attention to whether the performance parameters meet the requirements, so as to ensure the stability and reliability of the circuit. At the same time, it also needs to consider the power relay brand, price, after-sales service and other factors, and make the best choice after comprehensive consideration.
2. Electrical parameters
Power relay is an electrical control element and whose performance is mainly determined by electrical parameters. Among them, the most important parameters are the rated current and the rated voltage. Rated current is the maximum current that the relay can withstand, while the rated voltage is the maximum voltage that the relay can withstand. There are also contact resistance, insulation resistance, operation time and other parameters also need to be considered.
In the selection, it is necessary to determine the rated current and rated voltage of the relay according to the actual application scenario. At the same time, the relay reliability, life, environmental adaptability and other factors. For the application scenarios with high load and high frequency, the relay with large rated current and voltage needs to be selected to ensure its stability and reliability.
In recent years, with the development of intelligence and automation, the application range of power relay is more and more widely. At the same time, some new relays are also emerging, such as solid state relays, electronic relays, etc. These relays have higher reliability, longer life and better environmental adaptability, and have become the trend of future development.
3. Mechanical parameters
The mechanical parameters of the power relay refer to the performance indicators of the relay in the mechanical aspects, including contact resistance, mechanical life, contact pressure drop, etc. These parameters have an important influence on the service life and reliability of the relay. In the type selection, the appropriate mechanical parameters should be selected according to the actual requirements. For example, for frequent switching occasions, relays with long mechanical life should be selected to ensure their long-term stable operation. With the continuous development of science and technology, the mechanical parameters of modern power relay are also constantly improving, such as using new materials and new processes, to improve its performance and reliability. Therefore, in the selection, the latest technology development trend should also be considered to choose more advanced products.
4. Environmental parameters
In the performance and selection method of power relay, environmental parameters are very important factors. Environmental parameters include temperature, humidity, vibration, electromagnetic interference and other factors. When selecting the power relay, it is necessary to determine the environmental parameter range according to the actual operating environment. For example, when using a power relay in a high temperature environment, it is necessary to choose a relay that can withstand the high temperature to ensure that it works properly. Vibration and electromagnetic interference can also affect the performance of the power relay, so it is necessary to choose a relay with seismic and anti-interference ability. In practical application, it is also necessary to consider the installation mode and heat dissipation mode of the power relay to ensure that it will not be damaged by overheating during use. In conclusion, environmental parameters are important factors to be considered when selecting power relays, and their scope needs to be determined according to the actual use environment to ensure their normal operation
Transportation logistics solutions
QIANJI relay solves all transportation problems for you and provides the most reliable service
Large material warehouse
We are integrated with industry and trade, and have a large factory warehouse
Logistics selection
We will choose suitable logistics channels based on different regions
Customs declaration
We can provide customers with customs declaration services to solve their troubles
Certifications
Our products have obtained many certificates, and our company has also been rated as a top relay supplier in China
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As one of the most professional power relay manufacturers and suppliers in China, QIANJI is characterized by high-quality products and competitive prices. Please rest assured to purchase the power relay sold here from our factory. Contact us for customized services
As one of the leading power relay manufacturers and suppliers in China, we warmly welcome you to buy high-grade power relay in stock here from our factory. All our products are with high quality and low price.
rated power relay, miniature power relay, high power relay