ABB EF19-6.3 electronic overload relay with adjustable 1.9-6.3 A setting range, selectable trip classes and integrated phase failure protection for industrial motor control applications.
£129.35
The ABB EF19-6.3 Electronic Overload Relay (Part Number: 1SAX121001R1104) is a high-performance electronic motor overload protection relay engineered to provide accurate protection for three-phase motors against overload, phase failure and overheating. As part of the reliable ABB EF19 electronic overload relay series, it delivers dependable motor protection while helping improve the reliability and lifespan of industrial motor control systems.
Using advanced electronic sensing technology, the EF19-6.3 provides consistent protection regardless of ambient temperature. The relay is self-powered, eliminating the need for an external control supply, and features selectable trip classes to suit a wide range of motor starting characteristics. It mounts directly onto compatible ABB AF contactors for quick and efficient installation.
With an adjustable current setting range of 1.9-6.3 A, integrated auxiliary contacts and robust industrial construction, the EF19-6.3 is an excellent choice for motor starters used in conveyors, pumps, compressors, HVAC systems and automated production equipment.
Electronic overload relays continuously monitor motor current to detect overload and phase loss conditions before damage can occur. This helps minimise downtime, extend motor life and improve the reliability of industrial equipment.
The ABB EF19 series combines high measurement accuracy, a wide operating temperature range and adjustable trip characteristics, making it an ideal solution for machine builders, panel manufacturers and industrial maintenance engineers.
| Current | 6.3 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | EF19 |
| Part number | 1SAX121001R1104 |
| Product type | Electronic overload relay |
| Current setting range | 1.9–6.3 A |
| Rated operational current | 6.3 A |
| Trip classes | 10E / 20E / 30E selectable |
| Rated operational voltage | Main circuit 690 V AC |
| Auxiliary circuit voltage | 600 V AC/DC |
| Number of poles | 3 |
| Auxiliary contacts | 1 NC + 1 NO |
| Degree of protection | IP20 |
| Mounting type | Direct mounting to contactor |
| Suitable for | ABB AF09, AF12, AF16, AF26 contactors |
| Frequency | 50 / 60 Hz |
| Operating temperature | approx. -25 °C to +70 °C |
| Standards | IEC/EN 60947-4-1 |
| Dimensions (W × H × D) | approx. 44.4 × 85 × 59.3 mm |
| Weight | approx. 0.18 kg |
The EF19-6.3 protects three-phase electric motors against overload, phase failure and overheating in industrial motor control applications.
The relay features an adjustable protection range from 1.9 A to 6.3 A.
No. The relay is self-powered and operates without an additional external control supply.
The relay provides selectable Trip Class 10E, 20E and 30E to suit different motor starting requirements.
The EF19-6.3 is designed for direct mounting onto compatible ABB AF09, AF12, AF16 and AF26 contactors.
ABB EF19 electronic overload relays are trusted by OEM manufacturers, panel builders and maintenance engineers worldwide for delivering precise motor protection, dependable operation and long-term reliability.
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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...