TF96-78

Name: TF96-78
Brand: ABB
SKU: TF96-78

The ABB TF96-78 thermal overload relay provides reliable and fast protection for motors against overloads and phase failures. It is compact, powerful, and suitable for three- and single-phase applications.

Product ModelTF96-78

Material Number1SAZ911201R1004

Product ID76465

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
1. Reliable ProtectionThe ABB TF96-78 thermal overload relay offers reliable protection for motors, ensuring they operate safely and efficiently. Its fast response time helps prevent damage from overloads and phase failures.
2
2. Compact DesignDesigned to be compact and powerful, the TF96-78 is ideal for a variety of industrial applications where space is limited. Its compact size makes it easy to integrate into existing systems.
3
3. Temperature CompensationEquipped with temperature compensation, the TF96-78 ensures accurate protection regardless of ambient temperature changes. This feature enhances the overall reliability of the relay.
4
4. Trip-Free MechanismThe TF96-78 features a trip-free mechanism, which prevents the relay from tripping during normal operation. This ensures that the motor can run continuously without interruptions, improving productivity.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Net Width

69.9 mm

Product Net Height

106.9 mm

Product Net Depth / Length

106.3 mm

Product Net Weight

0.52 kg

Setting Range

65 ... 78 A

Rated Operational Voltage

Auxiliary Circuit 600 V AC/DC Main Circuit 690 V AC Main Circuit 440 V DC

5. Easy InstallationThe TF96-78 is designed for easy installation. It can be mounted directly on contactors or on a DIN rail, making it simple to integrate into existing electrical systems. The screw terminal type ensures secure connections.

6. Clear IndicationThe TF96-78 includes a clear indication of fault in a separate window, making it easy to diagnose and troubleshoot issues. This feature helps in quick identification of problems, reducing downtime and improving maintenance efficiency.

7. Wide Operating RangeThe TF96-78 operates within a wide temperature range of -40 to 70°C, making it suitable for various industrial environments. Its ability to handle different temperatures ensures consistent performance under diverse conditions.

8. High Current RatingWith a high current rating of up to 78A, the TF96-78 can handle heavy loads, making it an ideal choice for applications requiring robust motor protection. Its high short-circuit rating ensures that it can handle sudden surges in current.

9. Compliance with StandardsThe TF96-78 complies with international standards such as IEC/EN 60947-5-1, ensuring that it meets the highest safety and performance standards. This compliance provides peace of mind for users, knowing that the product is reliable and safe to use.

10. Cost-Effective SolutionThe ABB TF96-78 thermal overload relay is an economic electromechanical protection device, offering a cost-effective solution for motor protection. Its reliability and performance make it a valuable investment for any industrial setup.

Rated Operational Current (Ie)

78 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)

690 V

Number of Poles

Number of Auxiliary Contacts NC

Number of Auxiliary Contacts NO

Number of Protected Poles

Conventional Free-air Thermal Current (Ith)

Auxiliary Circuit NC 6 A Auxiliary Circuit NO 4 A

Rated Operational Current AC-15 (Ie)

(120 V) NC 3 A (120 V) NO 0.5 A (240 V) NC 3 A (240 V) NO 0.5 A (400 V) NC 0.75 A (400 V) NO 0.5 A (500 V) NC 0.75 A (500 V) NO 0.5 A

Rated Operational Current DC-13 (Ie)

(125 V) NC 0.55 A (125 V) NO 0.55 A (24 V) NC 1.25 A (24 V) NO 1.25 A (250 V) NC 0.27 A (250 V) NO 0.27 A (500 V) NC 0.15 A (500 V) NO 0.15 A (60 V) NC 0.55 A (60 V) NO 0.55 A

Degree of Protection

Housing IP20 Main Circuit Terminals IP10

Pollution Degree

Connecting Capacity Auxiliary Circuit

Flexible with Ferrule 1/2x 0.75 ... 2.5 mmÂ² Flexible with Insulated Ferrule 1x 0.75 ... 2.5 mmÂ² Flexible with Insulated Ferrule 2x 0.75 ... 1.5 mmÂ² Flexible 1/2x 0.75 ... 1 mmÂ² Flexible 1/2x 1 ... 2.5 mmÂ² Rigid 1/2x 0.75 ... 4 mmÂ²

Connecting Capacity Main Circuit

Flexible with Ferrule 1/2x 6 ... 35 mmÂ² Flexible with Ferrule 1x 6 ... 50 mmÂ² Flexible with Insulated Ferrule 1/2x 6 ... 16 mmÂ² Flexible with Insulated Ferrule 1x 6 ... 50 mmÂ² Flexible 1/2x 6 ... 35 mmÂ² Flexible 1x 6 ... 50 mmÂ² Rigid 1/2x 6 ... 35 mmÂ² Rigid 1x 6 ... 50 mmÂ²

Tightening Torque

Auxiliary Circuit 1 ... 1.2 NÂ·m Main Circuit 6.0 ... 9.0 NÂ·m

Wire Stripping Length

Auxiliary Circuit 9 mm Main Circuit 20 mm

Recommended Screw Driver

Auxiliary Circuit Pozidriv 2 Main Circuit Hexagon 4

Mounting Position

1 ... 6

Power Loss

at Rated Operating Conditions per Pole 2.7 ... 3.8 W

Suitable For

AF80 AF96

Standards

IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 UL 60947-1 UL 60947-4-1 IEC 60335-2-40 A2L

Maximum Operating Voltage UL/CSA

Main Circuit 600 V AC

Contact Rating UL/CSA

(NC:) B600 (NC:) Q600 (NO:) Q600 (NO:) D300

Connecting Capacity Main Circuit UL/CSA

Flexible 1x 8-1 AWG Flexible 2x 8-3 AWG Stranded 1x 8-1 AWG Stranded 2x 8-3 AWG

Connecting Capacity Auxiliary Circuit UL/CSA

Flexible 1/2x 18-12 AWG Stranded 1/2x 18-12 AWG

Tightening Torque UL/CSA

Auxiliary Circuit 9 ... 11 inÂ·lb Main Circuit 53 ... 80 inÂ·lb

Ambient Air Temperature

Operation -40 ... +70 Â°C Operation Compensated -40 ... +70 Â°C Storage -50 ... +80 Â°C

Ambient Air Temperature Compensation

Yes

Maximum Operating Altitude Permissible

2000 m

Resistance to Shock acc. to IEC 60068-2-27

11 ms Pulse 25g

Resistance to Vibrations

5g 3 ... 150 Hz

RoHS Status

Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019

Toxic Substances Control Act - TSCA

2CMT2023-006525

Object Classification Code

ETIM 4