TF140DU-142

Name: TF140DU-142
Brand: ABB
SKU: TF140DU-142

The ABB TF140DU-142 thermal overload relay provides reliable and fast protection for motors against overloads and phase failures. It features a compact design, trip class 10A, and is suitable for three- and single-phase applications.

Product ModelTF140DU-142

Material Number1SAZ431201R1004

Product ID88071

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
1. Reliable ProtectionThe TF140DU-142 offers reliable protection for motors in the event of overloads or phase failures, ensuring continuous operation and minimizing downtime.
2
2. Compact DesignWith a width of 89 mm, the TF140DU-142 is designed to be compact, making it ideal for space-constrained applications without compromising on performance.
3
3. Trip Class 10AThe device has a trip class of 10A, providing precise and efficient protection against overcurrent conditions.
4
4. Ambient Temperature CompensationThe relay is designed to operate within a temperature range of -25°C to +55°C, ensuring consistent performance in various environmental conditions.
5

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Net Width

89 mm

Product Net Height

140 mm

Product Net Depth / Length

126 mm

Product Net Weight

0.82 kg

Setting Range

110 ... 142 A

Rated Operational Voltage

Auxiliary Circuit 440 V DC Auxiliary Circuit 500 V AC Main Circuit 690 V AC Main Circuit 440 V DC

5. Easy Installation and ResetThe TF140DU-142 offers manual or automatic reset options, along with a trip-free mechanism and STOP function, making it easy to install and maintain. The device also features a trip indication light for easy monitoring.

Rated Operational Current (Ie)

142 A

Rated Frequency (f)

Auxiliary Circuit 50 Hz Auxiliary Circuit 60 Hz Auxiliary Circuit DC Main Circuit 60 Hz Main Circuit 50 Hz Main Circuit DC

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 10 A Auxiliary Circuit NO 6 A

Rated Operational Current AC-15 (Ie)

(120 V) NC 3 A (120 V) NO 1.5 A (240 V) NC 3 A (240 V) NO 1.2 A (400 V) NC 0.75 A (400 V) NO 0.37 A (440 V) NC 0.75 A (440 V) NO 0.37 A (500 V) NC 0.3 A (500 V) NO 0.25 A

Rated Operational Current DC-13 (Ie)

(125 V) NC 0.25 A (125 V) NO 0.25 A (24 V) NC 1.25 A (24 V) NO 1.25 A (250 V) NC 0.12 A (250 V) NO 0.04 A (60 V) NC 0.25 A (60 V) NO 0.25 A

Degree of Protection

IP20 Housing IP20 Main Circuit Terminals IP10

Pollution Degree

Connecting Capacity Auxiliary Circuit

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

Connecting Capacity Main Circuit

Flexible with Ferrule 1/2x 16 ... 70 mmÂ² Flexible with Insulated Ferrule 1/2x 16 ... 70 mmÂ² Flexible 1/2x 16 ... 70 mmÂ² Rigid 1/2x 16 ... 70 mmÂ²

Tightening Torque

Auxiliary Circuit 0.8 ... 1.2 NÂ·m Main Circuit 8 ... 10 NÂ·m

Wire Stripping Length

Auxiliary Circuit 9 mm Main Circuit 25 mm

Recommended Screw Driver

Auxiliary Circuit Pozidriv 2 Main Circuit Hexagon 4

Mounting Position

any

Power Loss

at Rated Operating Conditions per Pole 2.3 W

Suitable For

AF116 AF140

Standards

IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 UL 60947-1 UL 60947-4-1

Maximum Operating Voltage UL/CSA

Main Circuit 600 V AC

Contact Rating UL/CSA

(NC:) B600 (NO:) C300

Connecting Capacity Main Circuit UL/CSA

Flexible 1/2x 6-2/0 AWG Stranded 1/2x 6-2/0 AWG

Connecting Capacity Auxiliary Circuit UL/CSA

Flexible 1/2x 18-14 AWG Stranded 1/2x 18-14 AWG

Tightening Torque UL/CSA

Auxiliary Circuit 12 inÂ·lb

Ambient Air Temperature

Operation -25 ... +55 Â°C Operation Compensated -25 ... +55 Â°C Storage -40 ... +70 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 12g 25g 2 shocks 13 ms

Resistance to Vibrations

20 Cycles with Load 0.8 In: 5g 5 ... 150 ... 5 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