The ABB TF140DU-110 thermal overload relay is an economical electromechanical protection device for main circuits, providing reliable and fast protection against overloads.
Product ModelTF140DU-110
Material Number1SAZ431201R1002
Product ID87648
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable ProtectionThe TF140DU-110 offers dependable protection for your main circuit, ensuring that your electrical system operates safely and efficiently.
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2. Fast Response TimeWith its quick response time, this thermal overload relay quickly detects and responds to overloads, minimizing damage to your equipment.
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3. Economical SolutionDesigned as an economical electromechanical device, the TF140DU-110 provides cost-effective protection without compromising on performance.
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4. Easy InstallationThe TF140DU-110 is designed for easy installation, making it a straightforward addition to your electrical system.
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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
80 ... 110 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. Long-Term DurabilityBuilt to last, this thermal overload relay ensures the longevity of your electrical system by preventing damage from overloads and overheating.
Rated Operational Current (Ie)
110 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
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 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
