AC SSR Relay No Protection Solid State Relay With Safety Cover
Solid State Relay typical applications include temperature control
and motor drive control systems, where a high number of switching
operations are required. Our engineering and sales team can help
you select the most suitable application for your requirements and
even help with design in. We also have the capability to customise
designs and can work as part of your team to assist in achieving
the desired outcome for your project.
AC SSR of Single,Dual In-line
Main technical paramete Type | SAQ2402D | SAl4002D SAl4005D SAE4005D |
| Load voltage | 24-280VAC | 24-280VAC or 40-480VAC |
| Max Load current | 2A(Fig 1) | 2A(Fig 2) | 5A(Fig 3) | 8A(Fig 4) |
| Isolation bet.In & out | Optical isolation ≥2000VAC 1min |
| Isolation to case | ≥2500VAC 1min |
| Control voltage | 3-15VDC or 15-28VDC |
| Control current | 6-25mA Need limit current |
| Turn-on voltage | ≤1.1VAC |
| Off-state leakage | ≤0.5mA |
| Off-state dv/dt | 300v/μs |
| On or off time | 10ms |
| Frequenty range | 47/63Hz |
| Operating temperature | -50~80℃ |
| Internal actual device(Triac) | 3A (Long-term current 1.2A) | 6A (Long-term current 1.5A) | 12A (Long-term current 2.5A) | 16 (Long-term current 5A) |
| Applications | Contactor coil, Electromagnet, AC micro-motor, Heating. etc. |
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.
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.
