What is Hot Switching or Cold Switching in Relays? - FAQs | Bright Toward Industrial Co., LTD.

Hot switching refers to a circuit design that applies an electric load to the reed switch during operation. Hot switching is generally not recommended if you wish to extend the relay’s operational life to the maximum. However, if your application required hot switching like ESD testers, you have the choice of TOWARD’s Mercury Reed Relays, which can withstand hot switching up to 20 Amps without much contact wear. Cold switching refers to a circuit design that ensures the contacts in the relay are fully closed before the switch load is applied. Manufacturer of Opto-MOSFET Solid State Relays, Reed Relays, and RF MEMS Switches. We mainly serve the Semiconductor Testing, ATE, BMS (Battery Management Systems), industrial machinery and Electric Vehicle industries.

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What is Hot Switching or Cold Switching in Relays?

Bright Toward Industrial Co., Ltd is a manufacturer of Solid State Relays, Reed Relays and MEMS Switches.

What is Hot Switching or Cold Switching in Relays?

Hot switching refers to a circuit design that applies an electric load to the reed switch during operation. Hot switching is generally not recommended if you wish to extend the relay’s operational life to the maximum. However, if your application required hot switching like ESD testers, you have the choice of TOWARD’s Mercury Reed Relays, which can withstand hot switching up to 20 Amps without much contact wear. Cold switching refers to a circuit design that ensures the contacts in the relay are fully closed before the switch load is applied.

Reed Relays
50W/2000V/3A Reed Relay

This reed relay comes in a 1 Form A contact arrangment. It is designed with mercury applied to the contacts to enhance load voltage and significantly increase the lifetime up to 1*10^9. Breakdown voltage is at 2000V with a carrying current at 3Amps.

50W/2000V/3A Reed Relay
2000V/3A Reed Relay

This 2 Form A Wetted Reed Relay the can withstand a voltage of 2000VDC, with carry current at 3 Amps.

2000V/3A Reed Relay
2000V/3A Reed Relay

This Wetted Reed Relay can withstand a breakdown voltage at 2000V, with hot switching voltage at 1500VDC.

2000V/3A Reed Relay

B.T - A manufacturer of Solid State Relays, Reed Relays and MEMS Switches.

Located in Taiwan since 1988, Bright Toward Industrial Co., LTD. is a relay supplier and manufacturer. Main products, including Opto-MOSFET Relays, Opto-SiC MOSFET Relays, Solid State Relays, Reed Relays, And RF MEMS Switches, etc.

B.T supplies relays to the world's semiconductor and automotive industries for over three decades and has long term long-term partnerships with OKITA Works based in Japan; Menlo Microsystems based in California; JEL Systems based in Japan and Teledyne Relays and Coax Switches based in California. Mainly serve the Semiconductor Testing, ATE, BMS (Battery Management Systems), industrial machinery and Electric Vehicle industries.

B.T has been offering customers high-quality Opto-MOSFET and Opto-SiC MOSFET relays since 1988, both with advanced technology and 30 years of experience, B.T ensures each customer's demands are met.