24v Solid State Relay 40a

Product Specification

AC Single Phase SSR Solid State Relay AC SSR of Single Dual In line

Description of  AC Single Phase SSR Solid State Relay

Solid State Relay Output Waveform

With no input signal applied, no load current flows through the SSR as it is effectively OFF (open-circuited) and the output terminals see the full AC supply voltage. With the application of a DC input signal, no matter which part of the sinusoidal waveform, either positive or negative the cycle is going through, due to zero-voltage switching characteristics of the SSR, the output only turns-on when the waveform crosses over the zero point.

As the supply voltage increases in either a positive or negative direction, it reaches the minimum value required to turn the output thyristors or triac fully ON (usually less than about 15 volts). The voltage drop across the SSR’s output terminals is that of the switching devices on-state voltage drop, VT (usually less than 2 volts). Thus any high inrush currents associated with reactive or lamp loads are greatly reduced.

When the DC input voltage signal is removed, the output does not suddenly turn-off as once triggered into conduction, the thyristor or triac used as the switching device stays ON for the remainder of the half cycle until the load currents drops below the devices holding current, at which point it switches OFF. Thus the high dv/dt back emf’s associated with switching inductive loads in the middle of a sine wave is greatly reduced.

Then the main advantages of the AC solid state relay over the electro-mechanical relay are its zero crossing function which turns ON the SSR when the AC load voltage is close to zero volts, thus suppressing any high inrush currents as the load current will always start from a point close to 0V, and the inherent zero current turn-off characteristic of the thyristor or triac. Therefore there is a maximum possible turn-off delay (between the removal of the input signal and the removal of load current) of one half cycle.

Specification of  AC Single Phase SSR Solid State Relay

AC SSR of Single,Dual In-line

Our Company

Founded in 1992, Wuxi Gold Control Technology Co., Ltd., a private high tech company, is specialized in the research and production of Solid State Relays, Electronic Semiconductors, DC Motor Drivers and AC Voltage Regulation Devices.

For the past 10 consecutive years, our company has been qualified as "Jiangsu's private high tech business". We have also been given the honor as "Wuxi's 10 Best Private Science & Technology Enterprises" for years.

Our products, the electronic modules with the brand of Gold, have been listed among "Wuxi's Renowned Products".Our company has 5 patents on Solid State Relays. Our products are widely used in various industrial automation control areas like chemical fiber machinery, temperature control of electric furnace, rubber & plastic machinery, fountain control and digital-controlled machinery, and are sold to Europe, America, Korea and Turkey.

Our Factory

Our factory can produce about 50,000 pieces each month. We can give you good quality and reasonable prices. We have 20 professional research people who have all been graduated from famous universities and colleges. When producing, we have strict tests: self-test, inter-test and special-test.

Our Certificate

Our products, the electronic modules with the brand of Gold, have been listed among "Wuxi's Renowned Products".Our company has 5 patents on Solid State Relays. Our products are widely used in various industrial automation control areas like chemical fiber machinery, temperature control of electric furnace, rubber & plastic machinery, fountain control and digital-controlled machinery, and are sold to Europe, America, Korea and Turkey.

Our company passed the Certification of ISO9001:2000 in 2000. Our main products have been given CE Certificate of European Union, UL,CUL and RoHS Certificates.