Relays are widely used in household appliances, and the communications, automatic control, electronics, remote control and testing, and space and aviation industries. By construction, there are electromagnetic and solid-state types. Based on incoming signal, the choices include power, time and frequency kinds.
In recent years, solid-state kinds have become increasingly used. Instead of traditional coils, they have semiconductor devices, making them compatible with digital circuits. These relays also offer advantages of fast response time and low control power. Compared to electromagnetic counterparts, they have a better life span, which can be 50 to 100 times longer.
To keep up with the miniaturization trend, Chinese relay manufacturers have been upgrading their product lineups with units that are compact in size and have high reliability and a long operating life.
They continue to offer a range of relays for various applications, with power and electromagnetic types more widely available and making up the bulk of their shipments. These companies take advantage of the domestic availability of ferrite cores, coils, springs, pins and shells. So far, material costs are stable and will remain so in the coming months, ensuring no changes in the prices of relays.
Relay, 250VAC/30VDC maximum switching voltage
Company: Keifo Electronic Co. Ltd
Keifo’s model HF49FD is a relay with maximum switching voltage and power of 250VAC/30VDC and 1,250VA/150W. Its contact rating is 5A at 250VAC and 30VDC, coil power 0.12 to 0.18W, insulation resistance 1,000Mohms, dielectric strength 3,000VAC and operating temperature -40 to 85 C.
MOQ: 5,000 units
Lead time: 5 days
Relay, 0.25 or 0.45W coil power
Company: Keifo Electronic Co. Ltd
The HF32F relay from Keifo has 250VAC/30VDC maximum switching voltage, 2,500VA/300W maximum switching power, 1,000Mohm insulation resistance, 2,500VAC dielectric strength, 0.25 or 0.45W coil power and -40 to 70 C operating temperature. It is available in 1 Form A, 5 Form A, L-type, LQ-type and 1 Form C versions, with respective contact ratings of 125VAC 10A, 250VAC/30VDC, 250VAC/30VDC 3A, 250VAC 8A and 250VAC/30VDC 3A.
MOQ: 5,000 units
Lead time: 5 days
Relay, -40 to 105 C operating temperature
Company: Ningbo Seek Electrical Co. Ltd
Ningbo Seek markets the JQC-12FT, a relay with a 30VDC 10A, 125/250VAC 16A or 250VAC 8A contact rating, ≤100mohm contact resistance at 6VDC 1A, 250VAC/30VDC maximum switching voltage, 16A maximum switching current and 4,000VA/300W maximum switching power. The insulation resistance is 1,000Mohms at 500VDC, dielectric strength 2,500VAC/min between coil contacts and 1,000VAC/min between open contacts, operating time ≤15ms and operating temperature -40 to 105 C. This component meets UL, CE and RoHS standards.
MOQ: 1,000 units
Lead time: 3 days
Relay, 1 Form A, 1 Form C variants
Company: Ningbo Seek Electrical Co. Ltd
The JZC-32F relay from Ningbo Seek is available in 1 Form A and 1 Form C variants, with ≤100mohm contact resistance at 6VDC 1A. By maximum switching ratings, its voltage is 250VAC/30VDC, current 10A and power 2,500VA/300W. The insulation resistance is 1,000Mohms at 500VDC, dielectric strength 2,500VAC/min between coil and contacts and 1,000VAC/min between open contacts, operating time ≤8ms and operating temperature -40 to 70 C. This relay meets UL, CE and RoHS requirements.
MOQ: 1,000 units
Lead time: 3 days
Relay, 200mW sensitivity
Company: Zhejiang HKE Relay Co. Ltd
Zhejiang HKE’s model AC5N relay with a 1 Form A configuration has 250VAC 5A contact rating, 250VAC/30VDC maximum switching voltage, 0.9W nominal power, 200mW sensitivity and -40 to 85 C operating temperature. It can withstand 100,000 electrical operations.
MOQ: Negotiable
Lead time: 7 days
Relay, normally open contacts
Company: Zhejiang HKE Relay Co. Ltd
The NE35 from Zhejiang HKE is a relay with a normally open contact arrangement and designed for new energy systems. It has 400VAC maximum switching voltage, ≤100mohm initial resistance at 6VDC 1A, 1,000Mohm minimum insulation resistance and 4,500VAC dielectric strength.
MOQ: Negotiable
Lead time: 7 days
