ABB EF65-70 electronic overload relay with adjustable 25-70 A setting range, selectable trip classes and integrated phase failure protection for industrial motor control applications.
£255.99
The ABB EF65-70 Electronic Overload Relay (Part Number: 1SAX331001R1101) is a robust electronic motor overload protection relay engineered to provide accurate protection for three-phase motors against overload, phase failure and overheating. As part of the advanced ABB EF65 electronic overload relay series, it combines high accuracy, flexible adjustment and dependable performance for demanding industrial motor control applications.
Unlike conventional thermal overload relays, the EF65-70 uses advanced electronic sensing technology to provide precise motor protection over a wide operating temperature range. The relay is self-powered, eliminating the need for an external control supply, while selectable trip classes allow it to be matched to different motor starting characteristics. It mounts directly onto compatible ABB AF contactors for quick and straightforward installation.
With an adjustable current setting range of 25-70 A, integrated auxiliary contacts and rugged industrial construction, the EF65-70 is ideally suited for protecting larger motors used in conveyors, pumps, compressors, HVAC systems, manufacturing machinery and industrial automation equipment.
Electronic overload relays continuously monitor motor current and rapidly detect overload or phase loss conditions before damage occurs. This helps reduce downtime, extend motor service life and improve the reliability of industrial machinery operating in demanding environments.
The ABB EF65 series combines excellent measurement accuracy, temperature compensation and adjustable trip characteristics, making it an ideal solution for OEM machine builders, panel manufacturers and industrial maintenance professionals.
| Current | 70 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | EF65 |
| Part number | 1SAX331001R1101 |
| Product type | Electronic overload relay |
| Current setting range | 25–70 A |
| Rated operational current | 70 A |
| Trip classes | 10E / 20E / 30E selectable |
| Rated operational voltage | Up to 1000 V AC |
| Rated insulation voltage | 1000 V |
| Number of poles | 3P |
| Auxiliary contacts | 1 NC + 1 NO |
| Connection type | Screw terminals |
| Degree of protection | IP20 housing / IP10 terminals |
| Mounting type | Direct attachment to contactor |
| Voltage type | Self-powered |
| Frequency | 50 / 60 Hz |
| Operating temperature | approx. -25 °C to +70 °C |
| Standards | IEC/EN 60947-4-1 |
| Dimensions (W × H × D) | approx. 70 × 131.2 × 105.2 mm |
| Weight | approx. 0.821 kg |
The EF65-70 protects three-phase electric motors against overload, phase failure and overheating in industrial motor control applications.
The relay provides an adjustable protection range from 25 A to 70 A.
No. The relay is self-powered and operates without an additional external control supply.
The relay offers selectable Trip Class 10E, 20E and 30E to suit different motor starting characteristics.
The EF65-70 is designed for direct mounting onto compatible ABB AF40, AF52 and AF65 contactors.
ABB EF65 electronic overload relays are trusted by OEM manufacturers, panel builders and maintenance engineers worldwide for delivering accurate motor protection, dependable performance and long service life in demanding industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...