Why Choose the ABB EF205-210 Electronic Overload Relay?
The ABB EF205-210 Electronic Overload Relay (Part Number: 1SAX531001R1101) is a heavy-duty electronic motor overload protection relay designed to provide precise protection for large three-phase motors against overload, phase failure and overheating. As part of the advanced ABB EF205 electronic overload relay series, it delivers dependable motor protection for demanding industrial applications while helping maximise equipment reliability and minimise downtime.
Using advanced electronic sensing technology, the EF205-210 delivers highly accurate motor protection across a wide operating temperature range. The relay is self-powered, requiring no external control supply, and offers selectable Trip Class 10E, 20E and 30E to suit a wide variety of motor starting characteristics. It mounts directly onto compatible ABB contactors for straightforward installation.
With an adjustable current setting range of 63-210 A, integrated auxiliary contacts and robust industrial construction, the EF205-210 is ideal for protecting large motors used in pumps, compressors, conveyors, crushers, HVAC equipment and heavy industrial automation systems.
Key Advantages
- Accurate electronic overload protection for large three-phase motors.
- Adjustable current range of 63-210 A.
- Selectable Trip Class 10E, 20E and 30E.
- Protects against motor overload and phase failure.
- Self-powered design requiring no external control supply.
- Direct mounting onto compatible ABB contactors.
Key Features
- ABB EF205 electronic overload relay series.
- Current adjustment: 63-210 A.
- Rated operational current: 210 A.
- Selectable Trip Classes 10E / 20E / 30E.
- 1 NO + 1 NC auxiliary contacts.
- Automatic or manual reset selection.
- Integrated STOP, TEST and trip indication.
- Direct contactor mounting with screw terminals.
Reliable Motor Protection for Heavy Industrial Applications
Electronic overload relays continuously monitor motor current and rapidly detect overload or phase loss conditions before damage occurs. This helps reduce costly downtime, extend motor service life and improve the reliability of high-power industrial equipment.
The ABB EF205 series combines high measurement accuracy, temperature compensation and adjustable trip characteristics, making it an ideal solution for OEM machine builders, system integrators and industrial maintenance professionals working with large motor installations.
Typical Applications
- Large industrial pumps and compressors.
- Heavy-duty conveyor systems.
- Mining and aggregate processing equipment.
- Industrial HVAC and ventilation systems.
- Manufacturing and process machinery.
- Industrial automation and motor control centres.
