Overload relays are critical components in safeguarding motors and electrical systems across various industries. This article highlights the top 10 global overload relay suppliers, emphasizing their unique offerings and contributions to the industry.
1. HIITIO
Website:https://www.hiitio.com/
Established in 2018 as a subsidiary of Hecheng Electric, HIITIO specializes in manufacturing high-voltage DC electrical devices tailored for electric vehicles (EVs), solar energy systems, and energy storage applications. With over 20 years of experience in the electrical industry, HIITIO has expanded its reach to more than 50 countries, serving over 500 customers. The company boasts a 30,000㎡ headquarters and operates three factories equipped with advanced automatic production lines and testing equipment. HIITIO’s commitment to quality is reflected in its adherence to the IATF16949 production system and certifications from UL, CSA, TUV, CCC, and CE.
Key Products:
- Thermal Overload Relays: Ranging from 0.1A to 336A, these relays offer features like phase failure protection, temperature compensation, and manual/automatic reset options.
- UL-Approved Overload Relays: Certified by UL, CSA, TUV, CCC, and CE, ensuring compliance with international standards.
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2. Schneider Electric
Website:https://www.se.com/ww/en/
Founded in 1836, Schneider Electric is a French multinational corporation specializing in digital automation and energy management. With a global presence in over 100 countries and a workforce exceeding 153,000 employees, the company offers a broad range of products and services, including building automation, industrial control systems, and electrical grid automation. Schneider Electric’s TeSys series of overload relays is renowned for its reliability and performance in motor protection applications.
Key Products:
- TeSys LR9D and LR9F: Electronic overload relays designed for motor protection, available from 0.1 to 630 amps.
3. ABB
Website:https://global.abb/group/en
ABB is a Swiss-Swedish multinational corporation headquartered in Zurich, Switzerland, operating in over 100 countries with approximately 105,000 employees. The company specializes in electrification, robotics, automation, and motion, providing a wide range of products and services for various industries. ABB’s electronic overload relays are known for their reliability and precision in motor protection, suitable for various industrial applications.
Key Products:
- EF Series: Features include selectable trip classes, adjustable current settings, and temperature compensation up to +70°C.
4. Siemens
Website:https://www.siemens.com/global/en.html
Siemens is a German multinational conglomerate headquartered in Munich and Berlin, operating in over 200 countries with approximately 320,000 employees. The company focuses on areas such as digital industries, smart infrastructure, mobility, and healthcare. Siemens offers a range of overload relays designed to provide optimal motor protection, ensuring operational efficiency and safety.
Key Products:
- SIRIUS Series: Known for their compact design and reliable performance in various industrial settings.
5. Eaton
Website：https://www.eaton.com/us/en-us.html
Eaton Corporation is an American-Irish-domiciled multinational power management company, founded in 1911 and headquartered in Dublin, Ireland. With over 94,000 employees and operations in more than 175 countries, Eaton provides energy-efficient solutions for electrical, hydraulic, and mechanical power. Eaton’s C440 electronic motor protection relays deliver enhanced motor protection with advanced communication capabilities.
Key Products:
- C440/XTOE Series: Features include integral ground fault protection, flexible communication options, and remote monitoring capabilities.
6. Rockwell Automation (Allen-Bradley)
Website: https://www.rockwellautomation.com/en-us.html
Rockwell Automation is an American provider of industrial automation and digital transformation technologies, headquartered in Milwaukee, Wisconsin. With approximately 27,000 employees and customers in more than 100 countries, the company offers a wide range of products and services under brands like Allen-Bradley and FactoryTalk. Allen-Bradley, a brand of Rockwell Automation, offers a comprehensive range of overload relays designed for various industrial applications.
Key Products:
- E1 Plus Series: Provides accurate motor protection with features like ambient temperature compensation and selectable trip classes.
Note: The E1 Plus series has been discontinued; customers are encouraged to migrate to the E100 Electronic Overload Relays.
7. Mitsubishi Electric
Website: https://www.mitsubishielectric.com/en/
Mitsubishi Electric is a Japanese multinational electronics and electrical equipment manufacturing company, established in 1921 and headquartered in Tokyo, Japan. The company produces a wide range of products, including energy and electric systems, electronic devices, industrial automation systems, and home appliances. Mitsubishi Electric offers overload relays that are integral to their motor control solutions, ensuring reliable performance in diverse applications.
Key Products:
- TH-T Series: Thermal overload relays designed for compatibility with Mitsubishi contactors.
8. Fuji Electric
Website: Website: https://americas.fujielectric.com/
Fuji Electric is a Japanese company founded in 1923, specializing in the manufacture of low and medium-voltage distribution and motor control equipment. With a strong presence in the Japanese market, Fuji Electric provides a range of overload relays known for their durability and precision, catering to various industrial needs.
Key Products:
- TK-E Series: Thermal overload relays designed for motor protection in diverse applications.
9. CHINT Group
Website: https://www.chintglobal.com/global/en/home.html
CHINT Group is a leading global provider of smart energy solutions, founded in 1984 and headquartered in Wenzhou, China. With operations in more than 140 countries and regions, CHINT offers comprehensive solutions for power distribution, industrial control, and renewable energy. The company emphasizes innovation and sustainability, supported by its global R&D centers and intelligent manufacturing capabilities. CHINT’s overload relays are widely adopted across industrial, commercial, and utility sectors for their reliability and cost-effectiveness.
Key Products:
- NR2 Series: Thermal overload relays with adjustable current settings, temperature compensation, and manual/automatic reset functionality, suitable for motor protection up to 630A.
10. Littelfuse
Website:https://www.littelfuse.com/
Littelfuse, Inc. is an American electronics manufacturing company headquartered in Chicago, Illinois. Founded in 1927, the company primarily produces circuit protection products but also manufactures a variety of switches, automotive sensors, and microprocessors through its subsidiary Zilog. With more than 16,000 employees and operations in over 20 countries, Littelfuse serves over 100,000 end customers across various industries. The company offers a range of overload relays known for their durability and precision, catering to various industrial needs.
Key Products:
- MP8000 Series: Offers comprehensive motor protection with features like ground fault protection and remote monitoring.
Why Choose HIITIO Overload Relays?
HIITIO stands out in the overload relay market by offering products that combine safety, stability, and top-notch quality. With a commitment to stringent quality control measures and certifications from UL, CSA, TUV, CCC, and CE, HIITIO ensures that products meet or exceed industry standards. Overload relays are designed with features like phase failure protection, temperature compensation, and both manual and automatic reset options, catering to diverse industrial needs. Contact HIITIO for your next project!
