Reliable electromechanical protection for main circuits, ensuring motor safety in railway rolling stock applications.
Product ModelTF42-7.6B
Material Number1SAZ741201R1040
Product ID84132
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable Protection\"The ABB TF42-7.6B thermal overload relay provides dependable protection for your motors against overloads and phase failures, ensuring continuous operation and minimizing downtime.\"
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2. Compliance with Railway Standards\"Compliant with the latest railway rolling stock standards, this relay ensures that your equipment meets the highest safety and performance requirements.\"
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3. Economic Solution\"An economic electromechanical protection device, the TF42-7.6B offers a cost-effective solution for motor protection without compromising on reliability.\"
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4. Fast Response Time\"With its fast response time, the TF42-7.6B quickly detects and responds to overloads and phase failures, safeguarding your motors from damage.\"
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Product Net Width
45 mm
Product Net Height
88.3 mm
Product Net Depth / Length
70.5 mm
Product Net Weight
0.13 kg
Setting Range
5.7 ... 7.6 A
Rated Operational Voltage
Auxiliary Circuit 600 V AC/DC Main Circuit 690 V AC
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5. Easy Installation\"Easy to install and integrate with contactors, the TF42-7.6B can be mounted on the contactor or DIN rail, making it a versatile solution for various applications.\"
Rated Operational Current (Ie)
7.6 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 6 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 6 A Auxiliary Circuit NO 4 A Main Circuit 0 A
Rated Operational Current AC-15 (Ie)
(120 V) NC 3 A (120 V) NO 0.75 A (240 V) NC 3 A (240 V) NO 0.75 A (400 V) NC 0.75 A (400 V) NO 0.75 A (500 V) NC 0.75 A (500 V) NO 0.75 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
