DC Solid State Relays - 04/01/2021

DC Solid State Relays These relays are designed to switch DC loads, e.g solenoid valves, brakes, LEDs, motors (possibly on AC mains under specific conditions). celduc® relais offers a complete range of DC solid state relays up to 1700Vdc, 0 to 150A. Differences between AC and DC SSR AC Solid State Relays : The switching […]

Want to know more?

OptoCoupler : how it works ? - 09/11/2020

Solid State Relay (SSR) Circuit using OptoCoupler : how it works ? The input cicruit is one of the parts which composed a solid state relay. The input circuit is made up of an optical control called an optocoupler. An optocoupler contains one infra-red light-emitting diode, or LED light source, and a photo sensitive device within a […]

Want to know more?

Thyristor Rating VS Switching Current - 02/11/2020

What is the difference between « Thyristor rating » and « Switching current » ? This question comes up frequently and we are pleased to answer it in this dedicated article. Thyristors are used as the switching components in solid state relays for alternating currents. The ratings of our power components are specified in our […]

Want to know more?

Dual SSR – 22,5mm housing - 29/10/2020

SIB Range – new Dual SSR celduc® relais is featuring our new SIB942360 dual Solid State Relay 22,5mm housing as our Product of the Week. Here are the main features : Voltage is 600 Vpeak = 280 VAC nominal voltage Current is 2x20A (30A caliber power element I²t=487A²s) Dual Zero Cross Solid State Relay especially […]

Want to know more?

What is a back-to-back Thyristor ? - 19/10/2020

Thyristor : Power element Solid State Relays (SSR) are switching devices made with electronic components. The Thyristor is the power element and is the “heart” of the SSR. All our Solid State relays are fitted with back-to-back thyristors which are also named Silicon Controlled Rectifier, SCR. Celduc’s back-to-back thyristors are using TMS² Technology. Why  TMS² ?  […]

Want to know more?