Page top

Lead Contents

FAQ02202 of Solid-state Relays FAQ

FAQ No. FAQ02202

Primary Contents


Are there Solid-state Relays available with NC contacts?


NC contacts cannot be implemented for Solid-state Relays with triac or thyristor outputs without a drive power supply.

To form NC contacts, the semiconductor used for output must be normally closed (NC) and a depression transistor is required.

Solid-state Relays with NC contacts using depression MOS FETs have been commercially available recently mainly for applications with small signal currents.

G3VM Solid-state Relay is available from OMRON with NC contacts.

Recommended Products


Best-selling, general-purpose relays that can be selected based on operating environment and application


Power-switching Compact General-purpose Relays

G3PE (Three-phase)

Compact, Slim-profile SSRs with Heat Sinks. Solid State Contactors for Three-phase Heaters Reduced Installation Work with DIN Track Mounting.

Other Solid-state Relays FAQ