ABB EF460 Electronic Overload Relay

ABB EF460 Electronic Overload Relay Supplier,Exporter in India

ABB EF460-500 Electronic Overload Relay for High-Current Motor Protection

ABB EF460 is an electronic overload relay used for the protection of larger three-phase motors in industrial motor starters and MCC panels. It protects the motor against overload and phase failure and is commonly used with ABB AF contactors.

The EF460 range is centred around the ABB EF460-500, which provides a wide adjustable current setting from 150 to 500 A. This makes it suitable for larger pumps, compressors, conveyors, crushers, fans and process machinery where a high-current motor needs dependable overload protection.

EF460-500 is self-powered, so an additional external supply is not required for the overload protection function. The relay also allows selection between 10E, 20E and 30E trip classes, which helps when matching the relay to different motor starting conditions.

For an ABB EF460-500 electronic overload relay supplier in India, ABB 1SAX721001R1101 supplier, 150–500 A motor overload relay or EF460 replacement requirement, buyers can send the motor current, contactor model, quantity and destination country for quotation.

ABB EF460 Model

ABB EF460-500

• ABB Order Code: 1SAX721001R1101
• Adjustable current range: 150–500 A
• Rated operational current: 500 A
• Electronic overload protection
• Phase failure protection
• Selectable trip class: 10E, 20E or 30E
• Manual or automatic reset
• Self-powered operation
• Suitable for high-current three-phase motors
• Direct mounting with compatible ABB block contactors

EF460-500 is the main model under the EF460 family. For replacement or spare requirements, it is better to specify the complete EF460-500 model and 1SAX721001R1101 order code.

Technical Specifications

• Product family: ABB EF460
• Model: EF460-500
• ABB order code: 1SAX721001R1101
• Product type: Electronic overload relay
• Adjustable current range: 150–500 A
• Rated operational current: 500 A
• Number of poles: 3
• Main circuit operational voltage: Up to 1000 V AC
• Rated insulation voltage: 1000 V
• Trip classes: 10E, 20E and 30E selectable
• Overload protection: Yes
• Phase failure sensitivity: Yes
• Reset: Manual or automatic
• Power supply: Self-powered
• Auxiliary contacts: 1 NO + 1 NC
• TEST function: Available
• STOP function: Available
• Trip indication: Available
• Temperature compensation: -25°C to +70°C
• Compatible contactors: ABB AF400 and AF460
• Terminal type: Screw terminals

Features

• Wide 150–500 A adjustable current range
• Designed for larger industrial motors
• Electronic overload and phase failure protection
• Selectable 10E, 20E and 30E trip classes
• No separate external power supply required
• Manual and automatic reset options
• Front TEST and STOP functions
• Clear trip status indication
• 1 NO signalling and 1 NC trip contact
• Temperature-compensated operation
• Direct integration with ABB AF block contactors
• Suitable for normal as well as longer motor starting conditions

ABB EF460 with AF400 & AF460 Contactors

ABB EF460-500 is designed for use with larger ABB block contactors, particularly:

• ABB AF400
• ABB AF460

The combination is used in high-current motor starters where the contactor handles motor switching and the EF460 provides electronic overload protection.

For a new motor starter requirement, the motor full-load current, operating voltage and contactor selection should be checked together rather than choosing the overload relay only by its maximum current rating.

ABB EF460 Trip Class 10E, 20E & 30E

ABB EF460-500 allows the required overload trip class to be selected on the relay.

10E is generally used for motors with normal starting periods.

20E and 30E provide longer trip times during starting and are useful where a motor takes more time to accelerate because of the connected load.

This flexibility is useful for high-inertia equipment such as conveyors, crushers, mills and other heavy industrial machinery.

Applications

ABB EF460 electronic overload relays are commonly used in:

• Large MCC panels
• High-current motor starters
• Industrial pumps
• Pumping stations
• Large compressors
• Conveyor systems
• Crushers
• Mills
• Fans and blowers
• Material handling equipment
• Cement plants
• Steel plants
• Mining equipment
• Process plants
• Water and wastewater facilities
• Oil and gas installations
• Manufacturing plants
• Heavy industrial machinery
• OEM motor control panels
• Direct-on-line motor starters
• Star-delta motor starters

ABB EF460 for High-Current Motor Starters

EF460 is positioned above smaller ABB electronic overload relay ranges such as EF205 and EF370.

Its 150–500 A adjustment range makes it suitable where larger motors are being controlled through ABB AF400 or AF460 contactors.

For panel builders, OEMs and industrial maintenance requirements, the wide setting range can also simplify relay selection across several motor ratings.

Choosing the Correct ABB EF460-500

When requesting an ABB EF460 quotation, it is useful to provide:

• ABB EF460-500 model
• Order code 1SAX721001R1101
• Motor full-load current
• Motor voltage
• Existing ABB contactor model
• Required trip class, if specified
• Quantity
• Destination country

For replacement requirements, buyers can also share a photograph of the existing relay and contactor nameplate. This helps confirm the existing starter combination before supply.

Looking for ABB EF460-500 Electronic Overload Relay?

We supply ABB EF460-500 electronic overload relays for MCC panels, high-current motor starters, pumps, compressors, conveyors, crushers, process machinery and industrial replacement requirements.

Enquiries are welcome for ABB EF460-500 150–500 A electronic overload relay, ABB 1SAX721001R1101, EF460 relay for AF400 / AF460 contactors and ABB electronic overload relay export requirements.

Send the complete model, motor current, contactor details, quantity and destination country for quotation.