8 Best Slim Relay Brand 2025

Slim relays are essential for saving space and improving efficiency in modern control systems. With so many options on the market, choosing a reliable slim relay brand can be challenging.

In this article, we highlight 8 of the best slim relay brands in 2025, trusted by professionals around the world for quality and performance.

8 Best Slim Relay Brand 2025

Shenler

Company Overview

Established in 1985, Shenler Corporation Ltd. has evolved into a leading manufacturer of industrial relays, with over 40 years of experience in the field. Headquartered in Wenzhou, China, Shenler operates a state-of-the-art facility spanning 36,000 square meters and boasts more than 30 automated production lines. The company offers an extensive portfolio of over 80 relay series and 2,600 models, including PCB relays, industrial relays, interface relays, and time relays. Shenler’s commitment to quality is evidenced by its ISO 9001 certification and numerous international approvals such as UL, CE, TUV, and CSA. With a global presence, over 65% of Shenler’s products are exported worldwide, serving diverse industries like machinery manufacturing, energy, and automation.

Shenler Slim Relay

Shenler’s Slim Relay series is designed to provide high-performance switching in space-constrained applications. These relays feature an ultra-slim profile, starting from just 6.2 mm in thickness, making them ideal for dense installations. Key features include:​

• Advanced vibration resistance for reliable operation in high-vibration environments.​

• Gold-plated contacts ensuring improved contact reliability with over 100,000 operations at rated load.​

• Patented heat dissipation design maintaining stable performance up to +85°C ambient temperature.​

• Compliance with international standards such as UL, CE, TUV, EAC, and UKCA.

Omron

Company Overview

Founded in 1933 and headquartered in Kyoto, Japan, Omron Corporation is a global leader in automation, electronics, and control systems. With a strong commitment to innovation and quality, Omron has established itself as a trusted partner across various industries, including automotive, healthcare, and industrial automation. The company is renowned for its advanced technologies and solutions that enhance efficiency, safety, and productivity worldwide.​

Omron Slim Relay

Omron’s Slim Relay series, such as the G2RV-ST and G3RV-ST models, offers a space-saving design without compromising on performance. These relays feature a slim profile, allowing for high-density mounting in control panels, which is particularly beneficial in applications with limited space. The G2RV-ST series provides both AC and DC options, while the G3RV-ST series includes solid-state relays with zero-crossing functionality, enhancing switching reliability and longevity. These features make Omron’s Slim Relays ideal for a wide range of applications, including factory automation and machinery control.

Allen-Bradley

Company Overview

Allen-Bradley, a brand under Rockwell Automation, has been a cornerstone in industrial automation since its inception. With a commitment to providing high-quality control systems and components, Allen-Bradley has established itself as a trusted name in various industries, including manufacturing, energy, and infrastructure. Their products are designed to enhance efficiency, safety, and productivity across diverse applications.​

Allen-Bradley Slim Relay

The Allen-Bradley Slim Relay, such as the 700-HK series, offers a compact solution without compromising on performance. These relays are designed for high-density mounting in control panels, making them ideal for applications where space is limited. They feature a slim profile and are available in various configurations, including solid-state and electromechanical types, to suit different operational needs. With certifications like UL and CE, they ensure reliability and compliance with international standards.

​Finder

Company Overview

Founded in 1954 by Piero Giordanino, Finder has established itself as a leading manufacturer of electromechanical and electronic devices. Headquartered in Almese, Italy, the company produces over 14,500 products across residential, commercial, and industrial sectors. Finder operates manufacturing facilities in Italy, France, and Spain, ensuring high-quality production standards. With a global presence in 28 countries and over 80 distribution partnerships, Finder is recognized for its commitment to innovation and quality in relay technology.

Finder Slim Relay

Finder’s Slim Relay series, including the 34 and 38/39 series, offers ultra-compact solutions without compromising on performance. The 34 series features electromechanical and solid-state relays with a width of just 5 mm, making them ideal for applications with limited space. These relays are designed for high-density mounting and are compatible with Finder’s interface modules and sockets. The 38/39 series builds upon this with enhanced features such as multi-voltage support and built-in thermal protection. These slim relays are suitable for various applications, including control panels and automation systems, providing reliable performance in a compact form factor.

IDEC

Company Overview

Established in 1945 and headquartered in Osaka, Japan, IDEC Corporation has been a leader in industrial automation for over seven decades. The company specializes in developing innovative products that enhance safety, efficiency, and reliability across various industries. IDEC’s extensive portfolio includes Human-Machine Interfaces (HMIs), programmable logic controllers (PLCs), sensors, and a comprehensive range of relays. With a global presence and a commitment to quality, IDEC continues to drive advancements in automation technology.​

IDEC Slim Relay

IDEC’s Slim Relay series, such as the RJ2S-CL-D24, offers a compact design without compromising on performance. These relays are ideal for applications where space is limited, providing reliable switching capabilities. The RJ2S-CL-D24 model features a 2-pole configuration with a contact rating of 8A at 24VDC, equipped with a green LED indicator for status monitoring. Designed for PCB mounting, it ensures easy integration into control systems. The relay’s robust construction and compliance with RoHS standards make it suitable for various industrial applications, including automation and control systems.

Phoenix

Company Overview

Founded in 1923 and headquartered in Blomberg, Germany, Phoenix Contact is a global leader in industrial automation, interconnection, and interface solutions. With a workforce of over 20,000 employees across more than 50 countries, the company develops a wide range of products including terminal blocks, relays, connectors, and power supplies. Phoenix Contact is renowned for its commitment to quality, innovation, and sustainability, serving industries such as manufacturing, energy, and infrastructure.

Phoenix Contact Slim Relay

Phoenix Contact’s Slim Relay series, such as the PSRmini, offers a compact design without compromising on performance. The PSRmini relays are available in 6 mm and 12 mm widths, providing force-guided contacts and switching loads up to 6 A. These relays are suitable for applications in machine building and process industries, offering scalability and flexibility in safety concepts. With approvals including PLe according to EN ISO 13849 and SIL 3 according to IEC 61508/61511, the PSRmini relays ensure reliable performance in demanding environments.

Schneider Electric

Company Overview

Schneider Electric, headquartered in Rueil-Malmaison, France, is a multinational corporation specializing in energy management and automation solutions. With a presence in over 100 countries, the company is dedicated to providing innovative and sustainable solutions that enhance efficiency and productivity across various industries, including energy, infrastructure, and industrial automation. Schneider Electric’s commitment to sustainability and technological advancement has positioned it as a trusted partner for businesses worldwide.​

Schneider Electric Slim Relay

Schneider Electric’s Slim Relay, such as the Harmony RSL series, offers a compact design without compromising on performance. These relays are designed to fit into tight spaces, making them ideal for applications where space is limited. The RSL series features a 6 mm width and provides reliable switching capabilities, ensuring efficient operation in various industrial applications. With options like LED indicators and protection circuits, these relays offer enhanced visibility and safety. Schneider Electric’s Slim Relays are a testament to the company’s dedication to delivering high-quality, space-saving solutions for modern automation needs.

Siemens

Company Overview

Siemens AG, headquartered in Munich, Germany, is a multinational corporation renowned for its contributions to industrial automation, electrification, and digitalization. With a legacy spanning over 170 years, Siemens has established itself as a trusted partner across various industries, including manufacturing, energy, and infrastructure. The company’s commitment to innovation and quality is evident in its diverse portfolio of products and solutions that enhance efficiency, safety, and sustainability worldwide.

Siemens Slim Relay

Siemens offers a range of slim relays designed to meet the demands of modern industrial applications. For instance, the Siemens 3RQ30182AM080AA0 narrow design coupling relay features a compact width of 6.2 mm, making it ideal for installations with limited space. This relay offers a 6 A contact rating, 24 VDC coil voltage, and a 1 changeover contact form. It is equipped with spring-type terminals for quick and reliable wiring, a green LED indicator for status monitoring, and complies with international standards such as UL and CE. These features make Siemens slim relays suitable for applications requiring efficient and space-saving solutions.

​Shenler—Your Trusted Slim Relay Brand in 2025

In the competitive landscape of slim relay brands in 2025, Shenler stands out as a leader in innovation, reliability, and global reach. With over four decades of experience, Shenler offers a comprehensive portfolio of slim relays designed to meet the demanding requirements of modern industrial applications. Their products, such as the RFT Interface Relay and RSC Series Solid State Slim Relay, feature ultra-slim designs, high switching capacities, and compliance with international standards like UL, CE, and RoHS.

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