Understanding Form A, Form B and Form C Contact arrangements. - FAQs | Bright Toward Industrial Co., LTD.

"Form A refers to a Contact configuration term for relays, Form A refers to a Single Pole-Single Throw normally open contact. "1 Form A" means there is one Form A contact in the relay, "2 Form A" means there are two "Form A contacts" in the relay, so on and so forth.Form B refers to a normally closed Single Pole-Single Throw contact arrangement in a relay. This means that it stays in a closed (off) state without you driving the relay to operate. "1 Form B" means there is one "Form B contact," "2 Form B" means there are two "Form B contacts" in the relay, so on and so forth.Form C refers to a Single Pole-Double Throw (SPDT) contact. This means that there is one common point connected to one normally open-end and another normally closed contact. "2 Form C" refers to two "Form C contacts," so on and so forth.Form A Normally Open is the most common configuration for relays. The relay acts as a switch and breaks the circuit. Then a small control voltage or current is applied to close the relay, therefore connecting the circuit.Bright Toward offers a wide range of Form A Normally Open Relays, from Optically-coupled MOSFET Relays, Reed Relays, Multi-Channel Reed Relays to our six channel MEMS Switch. To search for Form A normally open relays in our fleet, please select your desired "Contact Form" in "multiple search." Or tell us your requirements through below form. 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.

Understanding Form A, Form B and Form C Contact arrangements.

Understanding Form A, Form B and Form C Contact arrangements.

Understanding Form A, Form B and Form C Contact arrangements.
Understanding Form A, Form B and Form C Contact arrangements.

Understanding Form A, Form B and Form C Contact arrangements.

"Form A refers to a Contact configuration term for relays, Form A refers to a Single Pole-Single Throw normally open contact. "1 Form A" means there is one Form A contact in the relay, "2 Form A" means there are two "Form A contacts" in the relay, so on and so forth.

Form B refers to a normally closed Single Pole-Single Throw contact arrangement in a relay. This means that it stays in a closed (off) state without you driving the relay to operate. "1 Form B" means there is one "Form B contact," "2 Form B" means there are two "Form B contacts" in the relay, so on and so forth.

Form C refers to a Single Pole-Double Throw (SPDT) contact. This means that there is one common point connected to one normally open-end and another normally closed contact. "2 Form C" refers to two "Form C contacts," so on and so forth.

Form A Normally Open is the most common configuration for relays. The relay acts as a switch and breaks the circuit. Then a small control voltage or current is applied to close the relay, therefore connecting the circuit.

Bright Toward offers a wide range of Form A Normally Open Relays, from Optically-coupled MOSFET Relays, Reed Relays, Multi-Channel Reed Relays to our six channel MEMS Switch. To search for Form A normally open relays in our fleet, please select your desired "Contact Form" in "multiple search." Or tell us your requirements through below form.


B.T - A professional manufacturer of Relays in various industries all over the world.

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.