Directory of Relay Protection Manufacturers

Top relay protection manufacturers include ABB, Siemens, Schneider Electric, SEL, OMICRON, GE, Eaton, and several specialized global and regional firms.

Leading Global Manufacturers

• ABB – A Swiss-Swedish multinational with a strong portfolio in digital and electromechanical protective relays, widely used in utilities and industrial applications .
• Siemens – German-based company offering monitoring, timing, safety, and general-purpose relays integrated into industrial automation and power protection systems .
• Schneider Electric – French multinational providing control relays, solid-state relays, and monitoring solutions for industrial and energy management applications .
• Schweitzer Engineering Laboratories (SEL) – U.S.-based specialist in power system protection, offering advanced digital relays, communication devices, and automation controllers .
• OMICRON – Austrian company known for innovative testing and protection solutions, including digital relays and diagnostic tools .

Mid-Tier and Industrial-Focused Manufacturers

• Eaton – U.S.-based provider of industrial and transmission-level protection relays .
• General Electric (GE Grid Solutions) – Offers ultra-high-voltage and transmission relays, widely used in long-haul renewable energy and industrial networks .
• Rockwell Automation – Specializes in motor protection and industrial-grade relays compatible with Allen-Bradley systems .
• TERASAKI Electric – Japanese manufacturer focusing on circuit protection and control devices for distribution systems .
• ZIV – Spanish company providing HV, MV, and LV solutions for European grid modernization and microgrids .

Other Notable Manufacturers

• Basler Electric – U.S.-based, known for high-speed distance protection and UHV projects .
• ERLPhase Power Technologies – Canadian company offering HV, MV, and LV protection solutions .
• NOARK Electric North America – Provides a range of protective relays for industrial and utility applications .
• Beckwith Electric Co., Inc. – U.S. manufacturer of control and protective devices .
• Ross Engineering Corp. – Specializes in industrial and automation relays .
• Woodward Inc. – U.S.-based manufacturer of electromechanical components and industrial control systems .
• Finder – European manufacturer producing over 14,500 types of electromechanical and electronic relays .
• Crydom – Global leader in solid-state relays (SSRs) for fast and frequent switching applications .
• Zettler Group – Offers a wide variety of electromechanical relays for industrial and consumer applications .
• Omron – Japanese automation technology leader, providing high-reliability industrial relays .
• Panasonic – Known for miniaturized and innovative relay solutions for telecommunications and test equipment .
• Phoenix Contact – Offers pluggable relays and solid-state modules for industrial control cabinets .
• GEYA – Specializes in industrial control and protection components, including timers and monitoring relays .
• Cabur – Italian company with decades of experience in industrial relays .
• Comat Releco – European manufacturer of industrial, monitoring, and timing relays . This list represents a mix of global conglomerates, mid-tier industrial players, and specialized innovators, covering a wide range of protective relay types, including electromechanical, digital, solid-state, monitoring, and safety relays. These manufacturers serve utilities, industrial automation, renewable energy, and microgrid applications worldwide.