Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SFA739001R1001 ABB EF1250DU-1250 Electronic Overload Relay 375 … 1250 A
ABB 1SFA739001R1001 EF1250DU-1250 electronic overload relay with a 375 A to 1250 A adjustable current range designed for high-power industrial motor protection applications.
£1,154.34
Why Choose the ABB 1SFA739001R1001 EF1250DU-1250 Electronic Overload Relay?
The ABB 1SFA739001R1001 is a high-performance electronic overload relay designed to provide reliable motor protection against overload conditions and phase failure in industrial motor control applications. As part of the ABB EF electronic overload relay series, the EF1250DU-1250 is engineered for use with large ABB AF contactors in demanding industrial installations.
This electronic overload relay delivers accurate motor protection with a wide adjustable current range and selectable trip classes. Its self-supplied design eliminates the need for an additional external power supply, while advanced protection functions help improve equipment reliability and reduce downtime in industrial systems.
With an adjustable current setting range of 375 A to 1250 A and a rated operational current of 1250 A, the ABB EF1250DU-1250 is suitable for high-power motor applications including large pumps, fans, compressors and industrial machinery requiring dependable overload protection.
Key Advantages
- Advanced electronic overload protection for industrial motors.
- 375 A to 1250 A adjustable current range for flexible motor protection.
- 1250 A rated operational current for high-power motor applications.
- Self-supplied design requiring no additional external control supply.
- Selectable trip classes 10E, 20E and 30E for application flexibility.
- Reliable protection against motor overload and phase failure.
Key Features
- ABB EF electronic overload relay series.
- EF1250DU-1250 model.
- 375 A to 1250 A adjustable setting range.
- 1250 A rated operational current.
- Compatible with ABB AF1350, AF1650 and AF2050 contactors.
- Selectable trip classes 10E, 20E and 30E.
- Integrated overload and phase failure protection.
- Automatic or manual reset functionality.
Reliable Motor Protection for Industrial Applications
Electronic overload relays such as the ABB EF1250DU-1250 continuously monitor motor operating conditions and provide accurate protection against excessive current and phase loss. This helps prevent motor damage while improving operational safety and system availability.
The EF series is designed for integration with ABB contactors and industrial motor starters. Its adjustable protection settings, selectable trip characteristics and robust construction make it suitable for large-scale automation and power control applications.
Typical Applications
- Large industrial motor starters.
- Pumps and water treatment systems.
- Fans and ventilation equipment.
- Compressors and heavy machinery.
- Industrial production systems.
- Motor control panels and automation installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Compatible With | AF1350–AF2050 | |
|---|---|---|
| Mounting Type | Direct mount on contactor | |
| Device Type | Electronic Overload Relay | |
| Current Range | 375–1250 A | |
| Trip Class | Class 10E | |
| Reset Type | Manual / Automatic | |
| Poles | 3-pole | |
| Manufacturer | ABB | |
| Series | EF Electronic Overload Relays | |
| Model | EF1250DU-1250 | |
| Product type | Electronic overload relay | |
| Part number | 1SFA739001R1001 | |
| Rated operational current | 1250 A | |
| Adjustable current range | 375 ... 1250 A | |
| Trip classes | 10E, 20E, 30E | |
| Suitable contactors | AF1350, AF1650, AF2050 | |
| Main circuit rated voltage | up to 1000 V AC | |
| Frequency | 50 / 60 Hz | |
| Number of poles | 3 | |
| Protection against | Motor overload and phase failure | |
| Dimensions (H × W × D) | approx. 198 × 350 × 425 mm | |
| Weight | approx. 10 kg |
Frequently Asked Questions
What is the ABB 1SFA739001R1001 used for?
The ABB 1SFA739001R1001 is an electronic overload relay used to protect industrial motors against overload conditions and phase failure.
What current range does the EF1250DU-1250 support?
The relay supports an adjustable current setting range from 375 A to 1250 A.
Which contactors are compatible with this overload relay?
The EF1250DU-1250 is designed for use with ABB AF1350, AF1650 and AF2050 contactors.
Does the overload relay require an external power supply?
No, the EF1250DU-1250 uses a self-supplied design and does not require an additional external supply.
What trip classes are available?
The relay provides selectable trip classes including 10E, 20E and 30E for different motor protection requirements.
Trusted for Industrial Motor Protection
ABB EF electronic overload relays are widely used in industrial motor control systems to provide dependable protection, accurate monitoring and reliable operation in demanding applications.
