ABB EF146-150 electronic overload relay with 54–150 A adjustable current range designed for reliable industrial motor overload and phase failure protection.
£407.92
The ABB 1SAX351001R1101 EF146-150 is a high-performance electronic overload relay designed to provide accurate and reliable protection for industrial motors against overload and phase failure conditions. As part of the advanced ABB EF146 electronic overload relay series, it delivers precise motor protection, adjustable trip characteristics and direct mounting compatibility with ABB contactors.
This self-powered electronic overload relay eliminates the need for an additional external supply while providing fast and dependable motor protection. The EF146 series combines the simplicity of traditional overload protection with advanced electronic monitoring, temperature compensation, selectable trip classes and flexible reset options for demanding industrial applications.
With an adjustable current setting range of 54–150 A and a rated operational current of 150 A, the ABB EF146-150 is suitable for protecting larger industrial motors in combination with compatible ABB contactors. Its robust construction and advanced protection functions make it ideal for heavy-duty motor starter assemblies.
Electronic overload relays such as the ABB EF146-150 continuously monitor motor current and disconnect the motor starter when abnormal overload or phase failure conditions occur. This helps prevent motor damage, improve equipment reliability and reduce unplanned downtime.
The ABB EF146 series is designed for industrial motor starters requiring accurate protection, wide adjustment ranges and dependable operation in demanding environments. Its selectable trip classes, diagnostic functions and direct contactor mounting provide a flexible solution for modern automation systems.
| Manufacturer | ABB |
|---|---|
| Series | EF146 Electronic Overload Relays |
| Model | EF146-150 |
| Part number | 1SAX351001R1101 |
| Product type | Electronic overload relay |
| Rated operational current | 150 A |
| Current setting range | 54–150 A |
| Number of poles | 3-pole |
| Auxiliary contacts | 1 NO + 1 NC |
| Trip classes | 10E / 20E / 30E selectable |
| Main circuit voltage | Up to 1000 V AC |
| Auxiliary circuit voltage | Up to 600 V AC/DC |
| Rated insulation voltage | 1000 V |
| Mounting type | Direct attachment to contactor |
| Terminal type | Screw terminals |
| Protection rating | IP20 housing |
| Dimensions (H × W × D) | approx. 150.4 × 89.05 × 105.2 mm |
| Weight | approx. 0.879 kg |
The ABB EF146-150 is an electronic overload relay designed to protect industrial motors against overload and phase failure conditions.
The overload relay supports an adjustable current setting range of 54–150 A.
No, the EF146-150 uses a self-powered design and does not require an additional external control supply.
The ABB EF146-150 provides selectable 10E, 20E and 30E trip classes for different motor protection requirements.
The EF146-150 is typically installed directly onto compatible ABB contactors within industrial motor starter assemblies.
ABB EF146 electronic overload relays are widely used by automation engineers and machine builders to provide accurate motor protection, reliable operation and flexible integration into industrial control systems.
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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...