Self-powered electronic overload relay for motor protection, offering reliable and fast protection without an external power supply.
Product ModelEF750-800
Material Number1SAX821001R1101
Product ID87709
Stock on Request
Last updated: 8/29/2026
Key Features
1
Feature1. Self-Supplied Operation The EF750-800 operates independently, eliminating the need for an additional external power supply, making it a convenient and cost-effective solution for motor protection.
2
Feature2. Reliable Protection Designed to offer reliable and fast protection for motors in the event of overload or phase failure, ensuring the safety and efficiency of your industrial operations.
3
Feature3. Easy Installation Easy to use like a thermal overload relay, the EF750-800 is compatible with various motor types and can be easily integrated into existing systems.
4
Feature4. Versatile Amperage Rating Available in amperage ratings from 250 to 800 A, the EF750-800 can be used in a wide range of applications, from small to large-scale industrial settings.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Product Net Width
244 mm
Product Net Height
111.6 mm
Product Net Depth / Length
187.73 mm
Product Net Weight
2.765 kg
Setting Range
250 ... 800 A
Rated Operational Voltage
Auxiliary Circuit 600 V AC/DC Main Circuit 1000 V AC
5
Feature5. Durable Design Built with high-quality components, the EF750-800 is designed to withstand harsh industrial environments, ensuring long-lasting performance and minimal maintenance requirements.
Rated Operational Current (Ie)
800 A
Rated Frequency (f)
Auxiliary Circuit 50 Hz Auxiliary Circuit 60 Hz Auxiliary Circuit DC Main Circuit 50 Hz Main Circuit 60 Hz
Rated Impulse Withstand Voltage (Uimp)
Auxiliary Circuit 6 kV Main Circuit 8 kV
Rated Insulation Voltage (Ui)
1000 V
Number of Poles
3P
Number of Auxiliary Contacts NC
1
Number of Auxiliary Contacts NO
1
Number of Protected Poles
3
Conventional Free-air Thermal Current (Ith)
Auxiliary Circuit NC 6 A Auxiliary Circuit NO 6 A
Rated Operational Current AC-15 (Ie)
(240 V) NC 3 A (240 V) NO 3 A (400 V) NC 1.1 A (400 V) NO 1.1 A (500 V) NC 0.75 A (500 V) NO 0.75 A
Rated Operational Current DC-13 (Ie)
(125 V) NC 0.55 A (125 V) NO 0.5 A (24 V) NC 1.5 A (24 V) NO 1.5 A (250 V) NC 0.27 A (250 V) NO 0.27 A (60 V) NC 0.55 A (60 V) NO 0.55 A
