Among all types of relays, solid-state relays possess advantages that other relays lack, such as no moving parts, no contact wear, no operating noise, and fast response speed. Therefore, solid-state relays are widely used in industrial automation, heating equipment, HVAC systems, machinery, lighting, motor control, and power control – fields requiring frequent start-stop operations, precise control, and long-term stable operation.
For novice buyers looking to learn more about solid-state relay manufacturers and suppliers, finding the right supplier can be a significant challenge.
To address this issue, this article will introduce 10 solid-state relay manufacturers and suppliers from different countries, aiming to provide helpful guidance for your selection.
Today, we’ve compiled a list of the top 10 best solid-state relay manufacturers globally.
They all boast long histories, produce a wide variety of high-quality solid-state relays, and enjoy outstanding reputations.
Let’s get started!
Quick comparison of solid-state relay manufacturers
| Manufacturer | Country/Region | Main Products | Typical Applications | OEM acceptance |
|---|---|---|---|---|
Crydom |
USA / Global |
Solid-state relays and other control products |
Industrial automation, heating, machinery |
Hard |
Omron |
Japan |
Automation and control components |
Factory automation, machinery |
Hard |
Celduc Relais |
France |
AC/DC and multi-phase SSRs, magnetic sensors etc. |
Heating, motor control, industrial automation |
Medium |
Carlo Gavazzi |
Switzerland |
Solid-state relays, sensors, intermediate relays etc. |
Heating, lighting and motor control etc. |
Hard |
Crouzet |
France |
New appearance SSRs |
Heating, motors, HVAC, machinery |
Hard |
FOTEK |
Taiwan |
Classic SSR-DA, SSR-AA SSRs and so on. |
Heating, machinery, automation |
Hard |
Autonics |
Korea |
Single and three phase SSRs and sensors etc. |
Factory automation, temperature control |
Hard |
Lorentzzi Electric |
China |
AC/DC SSRs, three-phase SSRs and SCR power regulators |
Industrial automation and heating |
Easy |
MGR |
China |
Single and three phase SSRs, solid-state voltage regulators and so on. |
Industrial automation and heating |
Medium |
GOLD |
China |
Single and three phase SSRs, solid-state voltage regulators and so on. |
Industrial automation and heating |
Easy |
1. Crydom / Sensata(American solid-state relay supplier)
- Address: Attleboro, MA, USA.
- Website: https://www.sensata.com
- Phone: +1-508-236-3800
Crydom is a long-established American solid-state component manufacturer with over 60 years of history, founded in 1964.
Its parent company is Sensata Technologies. Sensata Technologies reportedly acquired the Crydom brand in 2015 (Source: Crydom News).
The first solid-state relay was invented in 1971 by Crydom Controls, a subsidiary of International Rectifier.
Due to its fast response and lack of moving parts, solid-state relays quickly gained popularity, primarily for temperature control in various heating control systems.
Crydom’s solid-state relay product line includes: panel-mount solid-state relays, DIN rail-mount solid-state relays, PCB-mount solid-state relays, pluggable solid-state relays, and solid-state relay heatsinks.
Our comments:
For industrial system integrators seeking established international brands and a comprehensive portfolio of industrial switch products, Crydom is a worthwhile option. However, in terms of price and delivery time, their cost-effectiveness is not high, and their delivery cycle is relatively long.
2. Omron(Japanese and global solid-state relay supplier)
- Address: Kyoto 600-8530 Japan
- Website: https://automation.omron.com
- Phone: +81-75-344-7000
Omron is a Japanese automation and control technology company with a product portfolio encompassing sensors, relays, controllers, safety products, and other industrial automation components.
Founded in 1933 by Kazuma Tateishi, Omron Corporation has grown into a global company with over 28,000 employees and annual sales of ¥8.188 trillion.
Omron’s products have a wide range of applications, including industrial automation control systems, electronic components, social systems, and medical equipment, with hundreds of thousands of product types.
Omron also manufactures high-quality solid-state relays, including the popular G3NA panel-mount series, G3PE rail-mount series, G3NE pluggable series, and G3RV-SR compact series.
Our comments:
Omron solid-state relays are well-known for their high quality, reliability, and good stability, and have obtained global certifications including CE and UL. Their disadvantages include higher price, limited phase-controlled models, and certain requirements for heat dissipation.
3. Celduc Relais(French solid-state relay supplier)
- Address: Sorbiers – FRANCE
- Website: https://www.celduc-relais.com
- Phone: +33 (0) 4 77 53 90 00
Celduc Relais is a French manufacturer specializing in solid-state relays and related switching technologies. Its product portfolio includes single-phase, two-phase(also known as dual solid-state relays, which combine two solid-state relays into one product, with one or two independent control signal channels), three-phase, four-channel, PCB-mount, and DC solid-state relays.
Solid-state relays are one of its main businesses, with products widely used in heating, lighting, and motor control applications.
Our comments:
Celduc Relais is a well-known solid-state relay manufacturer with over 50 years of history. Their products have a memorable blue color scheme. However, their products are relatively expensive (around €80 for a 40A single-phase solid-state relay) and not suitable for large-scale production.
4. Carlo Gavazzi(Swiss solid-state relay supplier)
- Address: Steinhausen, Switzerland
- Website: https://www.gavazziautomation.com
- Phone: +41 41 747 45 25
Carlo Gavazzi is a Swiss manufacturer and supplier of solid-state relays with 35 years of history. They categorize their relays into three types based on mounting method: PCB mount, DIN rail mount, and panel mount.
Their PCB-mount solid-state relays are further subdivided into AC and DC output types, with a maximum output current of 10 amps, and a total of 38 models available.
Their DIN rail mount solid-state relays include 318 models, with a maximum single-phase current of 85 amps and a maximum three-phase current of 65 amps.
They offer 374 panel mount solid-state relays, with a maximum single-phase current of 125 amps and a maximum three-phase current of 75 amps.
Our comments:
Carlo Gavazzi is a highly regarded solid-state relay manufacturer with a strong brand recognition in the North American market. However, their products are relatively expensive, similar to those of Celduc Relais (described earlier, assuming the same specifications, such as DC control of AC, 40A load current).
If you are looking for high-performance, cost-effective products, you might consider Lorentzzi Electric’s or other Chinese manufacturers’.
5. Crouzet(French solid-state relay supplier)
- Address: CEDEX 9 VALENCE, France
- Website: https://www.crouzet.com
- Phone: +33 (0) 475 802 101
French company Crouzet has decades of experience in manufacturing solid-state relays (SSRs).
Their SSR designs are more attractive and aesthetically pleasing than comparable products on the market.
However, due to high labor costs in France and the patent protection of their designs, Crouzet’s SSRs are more expensive, meaning you’ll need to pay a higher price for products with the same functionality.
In addition to solid-state relays, they also manufacture limit switches, timers, electromechanical pulse counters, and various motors.
Our comments:
Crouzet’s solid-state relays feature a novel design and a rounded appearance. The product is quite refined, but its heatsink base is slightly smaller than other manufacturers’ products, resulting in slightly inferior heat dissipation performance. A drawback is that it’s made in France, hence the slightly higher price. Users with limited budgets should carefully consider this.
6. FOTEK(Taiwanese solid-state relay supplier)
- Address: Yenping N. Rd., Taipei, Taiwan
- Website: https://www.fotek.com.tw
- Phone: +886-(02)2816-3661
FOTEK Electric Co., Ltd., established in 1985, is a Taiwanese company specializing in the manufacturing, research and development, and production of industrial automation control equipment.
The company’s products are widely used in numerous fields, including rubber and plastics machinery, packaging, food, printing, parking, and transportation, and are sold globally to meet diverse customer needs.
FOTEK’s solid-state relays mainly include: SSR-DA series DC control AC, SSR-AA series AC control AC single-phase solid-state relays, SSR-VA series potentiometer-controlled type, SSR-VD series voltage control type, SSR-LA current control type single-phase solid-state voltage regulators, TSR-DA series DC controller AC, and TSR-AA series AC control AC three-phase solid-state relays, etc.
Our comments:
FOTEK solid-state relays are a well-known brand both domestically and internationally, and their model names are still widely used in China. However, a large number of counterfeit products exist on the market, and many factories use the Fotek brand to sell at low prices, seriously damaging FOTEK’s brand reputation.
7. Autonics(Korean solid-state relay supplier)
- Address: Haeundae-gu, Busan, South Korea
- Website: https://www.autonics.com
- Phone: +82-2-2048-1577
Autonics is a well-known South Korean manufacturer of solid-state relays (SSRs). Headquartered in Busan, South Korea, the company manufactures most of its products in Vietnam.
Strictly speaking, SSR manufacturing represents only a small portion of the company’s business; its main business is the sale and production of proximity sensors, safety light curtains, PID temperature controllers, and rotary encoders.
Its brand enjoys a high reputation in Iran, Saudi Arabia, the UAE, and other Middle Eastern countries.
Its SSR products include single-phase SSRs: the SR1 series standard type, the SRH1 series with heat sink, and the SRHL1 series with heat sink and temperature protection; and three-phase SSRs: the SR3 series standard type, the SRH3 series with heat sink, and the SRHL3 series with heat sink and temperature protection.
Our comments:
While Autonics solid-state relays may not be as widely known as Crydom, Celduc Relais, Carlo Gavazzi, and FOTEK, their products offer guaranteed quality at a moderate price, placing them in the mid-range category.
8. Lorentzzi Electric(Chinese solid-state relay supplier)
- Address: Yueqing, Wenzhou, Zhejiang, China
- Website: https://lorentzzi.com
- Phone: +86-15397300173
Lorentzzi Electric, short for Wenzhou Lorentzzi Electric Co., Ltd., is a rapidly growing supplier of solid-state relays, sensors, and other process instruments.
Lorentzzi manufactures and supplies DC solid-state relays, AC solid-state relays, and solid-state voltage regulators.
In addition, the company offers high-quality thyristor power controllers with control signals that can be analog 4-20 mA, 0-5 VDC, 0-10 VDC, or manual potentiometer control.
All Lorentzzi Electric solid-state relays are manufactured to high European CE and RoHS standards and come with a 2-year warranty, guaranteeing stable operation for at least 5 years.
Our comments:
Lorentzzi Electric’s solid-state relays are reasonably priced, with a wide product range covering single-phase and three-phase models, from low current (10A) to a maximum of 120A. They also offer OEM services to help customers grow their brands.
9. MGR(Chinese solid-state relay supplier)
- Address: Beibaixiang Industrial Zone, Yueqing, China
- Website: http://mager.cn
- Phone: +86-0577-62875133
MGR (also known as Mager) is a Chinese solid-state relay (SSR) manufacturer and supplier, primarily operating in mainland China. With its growing business, the brand awareness of its SSR products in China has significantly increased.
MGR began manufacturing SSRs in 2001, possessing 20 years of experience in SSR production.
MGR’s products include single-phase, three-phase, industrial-grade, PCB-mount, and special-purpose solid-state relays, solid-state voltage regulators, thyristor power controllers, motor forward/reverse solid-state relays, bridge rectifiers, and more.
Our comments:
MGR brand solid-state relays enjoy high brand recognition in China. It is one of the leading solid-state relay manufacturers in the country and one of the earliest domestic brands to produce solid-state relays. Its moderate price makes it an ideal alternative to other foreign brands.
10. GOLD Electrical(Chinese solid-state relay supplier)
- Address: Wuxi City, Jiangsu Province, China
- Website: https://www.goldssr.com
- Phone:+86-13795385467
GOLD is the abbreviation for Jiangsu GOLD Electrical Control Technology Co., Ltd.
Its factory is located in Wuxi City, Jiangsu Province, China.
GOLD has over 30 years of history, and its products cover single-phase solid-state relays, two-phase solid-state relays, three-phase solid-state relays, solid-state relays with heat sinks, three-phase voltage controllers, DC solid-state relays, etc.
Its DC-to-AC solid-state relays and three-phase solid-state relays have obtained UL certification, so if you are looking for a manufacturer with UL certification, GOLD is a good choice.
Our comments:
GOLD SSR is another long-established solid-state relay manufacturer in China with nearly 30 years of experience in producing various solid-state relays. Some of its products have obtained UL certification, so if you are a buyer in the United States or Canada, UL certification is an advantage of GOLD SSR.
Conclusion
In short, the top 10 solid-state relay manufacturers are Crydom, Omron, Celduc Relais, Carlo Gavazzi, Crouzet, FOTEK, Autonics, Lorentzzi Electric, MGR, and GOLD Electrical. They each have their own advantages and disadvantages, and none are perfect.
If you are looking for a reliable solid-state relay manufacturer that offers reasonable prices, excellent quality, and attentive service, please contact us immediately to discuss cooperation!
