ABB EF65 Electronic Overload Relays

ABB EF65 Electronic Overload Relays Supplier,Exporter in India

ABB EF65 Electronic Overload Relay for Motor Protection

ABB EF65 is an electronic overload relay designed for three-phase motor protection in MCC panels, motor starters, pumps, compressors, conveyors and industrial machinery. It protects the motor against sustained overload and phase failure and is normally combined with ABB AF contactors to form a compact motor starter.

The EF65 range covers motor currents from 20 A to 70 A. Unlike a traditional thermal overload relay, EF65 uses electronic current measurement and gives the user a choice of trip class 10E, 20E or 30E. This makes it suitable for normal motor starting as well as applications where the motor takes longer to accelerate.

The relay is self-powered from the motor circuit, so no separate auxiliary power supply is required. ABB currently offers two main EF65 models: EF65-56 and EF65-70.

For an ABB EF65 electronic overload relay supplier in India, EF65-56 motor protection relay, EF65-70 overload relay or ABB overload relay export requirements, buyers can share the motor current, contactor model and quantity for quotation.

ABB EF65 Models

ABB EF65-56

• ABB Order Code: 1SAX331001R1102
• Adjustable current range: 20–56 A
• Electronic overload protection
• Phase failure sensitivity
• Selectable trip class 10E, 20E or 30E
• Manual or automatic reset
• Suitable for three-phase motor starter applications

ABB EF65-70

• ABB Order Code: 1SAX331001R1101
• Adjustable current range: 25–70 A
• Rated operational current: Up to 70 A
• Electronic overload and phase failure protection
• Selectable trip classes
• Direct mounting with compatible ABB contactors
• Suitable for medium-size industrial motor applications

Technical Specifications

• Product family: ABB EF65
• Product type: Electronic overload relay
• Models: EF65-56 and EF65-70
• Overall current coverage: 20–70 A
• EF65-56 setting range: 20–56 A
• EF65-70 setting range: 25–70 A
• Number of poles: 3
• Main circuit voltage: Up to 1000 V AC
• Rated frequency: 50/60 Hz
• Trip classes: 10E, 20E and 30E selectable
• Protection against motor overload
• Phase failure sensitivity
• Self-powered operation
• Manual or automatic reset
• TEST and STOP functions
• Trip indication
• Auxiliary contacts: 1 NC trip contact + 1 NO signalling contact
• Temperature compensation: -25°C to +70°C
• Direct contactor mounting
• Separate mounting kit available

Features

• Wide adjustable motor current range
• Electronic overload protection
• Protection against phase failure
• Selectable 10E, 20E and 30E trip classes
• No separate control supply required
• Manual or automatic reset selection
• Front TEST and STOP controls
• Clear trip status indication
• Trip and signalling auxiliary contacts
• Temperature-compensated operation
• Direct mounting with ABB contactors
• Suitable for standard and heavier motor starting duties

ABB describes its electronic overload range as providing adjustable current settings, phase-loss sensitivity, selectable trip classes and direct integration with contactors.

ABB EF65-56 vs EF65-70

The main difference between the two EF65 models is the adjustable current range.

EF65-56 covers 20–56 A, while EF65-70 covers 25–70 A.

For example, a motor operating around 35 A may fall within the adjustment range of both models. The final selection should therefore also consider the ABB contactor being used and the complete motor-starter coordination.

For replacement enquiries, it is better to specify the exact EF65-56 or EF65-70 model rather than asking only for “ABB EF65.”

ABB EF65 with ABB AF Contactors

EF65 is designed to form part of ABB motor starter combinations and can be mounted directly with compatible AF contactors.

ABB coordination data shows EF65 being used with contactors such as AF40, AF52 and AF65, depending on the motor rating and starter design.

This combination is commonly used in:

• Direct-on-line motor starters
• MCC feeders
• Pump starters
• Compressor starters
• Conveyor control panels
• Industrial machine panels

For a new starter requirement, the motor full-load current and contactor model should be provided so the correct combination can be checked.

ABB EF65 Trip Class 10E, 20E & 30E

The selectable trip class is one of the main advantages of the EF65.

Class 10E is generally used for motors with normal starting characteristics.

Class 20E and 30E provide more time for applications where the motor has a longer starting period or a heavier starting load.

Instead of stocking separate overload relays for different trip classes, the required class can be selected directly on the EF65. ABB confirms all three trip classes are selectable on the relay.

Applications

ABB EF65 electronic overload relays are used in:

• MCC panels
• Motor starter panels
• Industrial pumps
• Pump control panels
• Compressors
• Conveyor systems
• Fans and blowers
• HVAC equipment
• Crushers and mills
• Material handling systems
• Packaging machines
• Machine tools
• Process plants
• Water and wastewater plants
• Manufacturing equipment
• Factory automation
• OEM machinery
• Direct-on-line starters
• Star-delta motor starters
• Industrial motor control systems

Choosing the Correct ABB EF65 Relay

For an ABB EF65 quotation, buyers should provide:

• Motor rated current
• EF65-56 or EF65-70, if already specified
• ABB order code
• Existing ABB contactor model
• Required trip class, if specified
• Quantity
• Destination country

For replacement requirements, a clear photograph of the existing overload relay and contactor is also useful.

Looking for ABB EF65 Electronic Overload Relays?

We supply ABB EF65 electronic overload relays for motor starters, MCC panels, pumps, compressors, industrial machinery, OEM projects and export requirements.

Enquiries are welcome for ABB EF65-56 20–56 A and EF65-70 25–70 A electronic overload relays.

For an ABB EF65 overload relay supplier and exporter from India, EF65-56 supplier, ABB EF65-70 electronic motor protection relay or replacement overload relay requirement, send the complete model, motor current, contactor details, quantity and destination country for quotation.