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Overview
- Economical electromechanical thermal overload relay for main circuit motor protection.
- Trip Class 10 rating for reliable overload and phase failure protection.
- Features temperature compensation, selectable manual/automatic reset, and trip-free mechanism.
- Includes NC trip contact and NO signal contact for system monitoring.
- Directly mounts to ABB block contactors (AF09-AF38 series).
Specifications
Ambient Air Temperature | Operation -25 ... +60 °C / Operation Compensated -25 ... +60 °C / Storage -50 ... +80 °C |
Application | Mainly used for controlling 3-phase motors and generally for controlling power circuits up to 690 V AC and 220 V DC. The contactors can also be used for many other applications such as bypass, capacitor switching, lighting, DC power circuits. |
Connection Type | Direct connection to block contactors |
Current Rating | 25 A |
Mounting Type | Direct mounting on ABB block contactors (AF09...AF38 series) |
Mounting Type | Direct mounting onto ABB block contactors |
Poles | 3 |
Product Name | Thermal Overload Relay |
Series | TF42 |
Size | 82x110x108mm |
Special Features | The TF42-29 thermal overload relay is an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has trip class 10. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function and a trip indication. The overload relays are connected directly to the block contactors. Single mounting kits are available as accessory. |
Standard | RoHs, CSA, cUL, CE, GOST |
Trip Class | class 10 |
Type | Contactors |
Voltage Rating | Auxiliary Circuit 600 V AC / DC / Main Circuit 690 V AC |
Voltage Rating | 48-130 V |
Package Dimensions (L x W x H) | 3.071 IN x 1.89 IN x 3.622 IN |
Package Dimensions (L x W x H) | 7.8003 cm x 4.8006 cm x 9.1999 cm |
Package Weight (Imperial) | 0.380 L |
Package Weight (Metric) | 0.172 kg |
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Frequently Asked Questions
What is the rated operational voltage for the main circuit?
The rated operational voltage for the main circuit is 690V AC.
What is the rated operational current for this thermal overload relay?
The rated operational current is 25A.
What is the setting range for the current adjustment?
The setting range for the current adjustment is 17 to 25A.
What is the number of auxiliary contacts available?
There is one normally closed (NC) auxiliary contact and one normally open (NO) auxiliary contact.
What trip class does this thermal overload relay have?
The device has a trip class of 10.
Does the relay have temperature compensation?
Yes, the device features temperature compensation.
What are the ambient air temperature operating limits?
The operating ambient air temperature range is -25 to 60 degrees C, with compensation up to 55 degrees C.
What is the maximum operating altitude for this device?
The maximum permissible operating altitude is 2000 meters.
What tightening torque is recommended for the main circuit terminals?
The recommended tightening torque for the main circuit is 2.6 Nm.
What is the wire stripping length for the auxiliary circuit?
The wire stripping length for the auxiliary circuit is 7mm.
Frequently Asked Questions about ABB - Electrification
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