What is the difference between an ssr and a relay

Moreover, solid-state relays use semiconductors as signal transmission media, so solid-state relays can be compatible with computer control systems without adding additional circuits and equipment, but EMR cannot do it. The response time of the solid state relay is much lower than that of the mechanical relay, and the control power of the SSR relay is also lower than that of the EMR relay, which makes the EMR not applicable to equipment that requires short response time and low control power.

In some special applications that requires low power factor, the switch must be stable and not subject to vibration, so EMR relays cannot be used either. The mechanical structure causes the mechanical relay to generate a large amount of electromagnetic interference EMI signals during switching period. If there is no addition protection circuit, these interference signals may adversely affect the electronic device and the power grid.

And strong electromagnetic interference will even damage the human body. In contrast, the solid state relay has good electromagnetic compatibility EMC. And the solid state relay with zero-crossing function can reduce the influence of external interference on SSR, and also reduce the interference signal generated by the solid-state relay itself. Therefore, if the application requires low electromagnetic interference, only solid state relays recommended.

The circuit inside the solid state relay is various and can be flexibly designed according to actual needs. Through the combination of internal components, solid state relays can achieve a variety of control of the output circuit according to different state of control signals and power supplies. However, electromagnetic relay can only switch the load asynchronously, that is to say, the state of the switch is only controlled by the control signal and is time-independent of the power signal; whereas the solid state relay can realize the control synchronously.

Of course, solid state relays have more action modes, such as: 1 Asynchronous mode 2 Synchronous mode 3 Voltage zero or peak sync mode 4 Phase angle mode 5 Pulse mode. HUIMU Industrial is a company specializing in solid state relays, and supplies high-quality solid state relays and solutions to the world. And we are proud to offer high quality products and provide our customers with the services and support they deserve.

According to customer needs, we can design solid state relays in different forms and specifications, and also provide deep OEM customized services to meet different requirements. We strictly control the production and components of our products. Every component comes from excellent and reliable suppliers, each operation process strictly follows the IS standard, and each part is rigorously tested by superb testing equipment.

Our service team is available 7x24 hours, and offers various contact ways e-mail, IM apps, and etc. Be free to contact us to get online consulting and technical support. How to wire the solid state relay? Go to Solid State Relay vs Electromagnetic Relay. Why use Solid State Relays? Click here to know more information about the solid state relays With the development of science and technology, the demand for relays small size, long service life, high stability, high performance, and high compatibility is increasing, so the semiconductor components are used as the switching components in the relay.

Usually higher than mW Not suitable for small output signals Limited contact life Only a single contact Maximum switching frequency is limited mhz Output can only be AC or DC , not compatible Noisy action Residual voltage Long-life and high stability Actually, the life of the mechanical contacts determines the life of the mechanical relay.

Cost of use The initial purchase cost of solid state relays is higher than that of electromagnetic relays. Efficient control The operating frequency or switching rate of solid state relays is several to several tens of times that of electromagnetic relays, which enables SSRs to be used in equipment that requires high efficiency.

Electromagnetic radiation The mechanical structure causes the mechanical relay to generate a large amount of electromagnetic interference EMI signals during switching period. More action modes The circuit inside the solid state relay is various and can be flexibly designed according to actual needs.

We provide industrial products and services to global companies. Can provide multiple sets of contacts; normally open and normally closed contacts are both available. Anti-corrosion and moisture proof. No heat sink required.

Solid state relay, commonly known as SSR, are a type of relay found everywhere in the world. The main difference between solid state relays and general relays is that there is no movable contacts in solid state relay SSR. In general, solid state relays are quite similar to the mechanical relays that have movable contacts.

One thing to highlight is that solid state relay SSR employ semiconductor switching elements, such as diodes, thyristors, triacs and transistors. Moreover, solid state relays SSR employ optical semiconductors which are called photocouplers to isolate input and output signals.

Photocouplers change electric signals into optical signals and relay the signals through space, therefore completely isolating the input and output sections while relaying the signals at high speed. Solid state relay SSR do not contain any mechanical contacts and are mostly of electronic parts.

Thus, SSR have a wide range of features that mechanical relays do not have. The most significant feature of SSR is that they do not employ switching contacts that will wear out physically.