Description
The ABB TF42-10 Thermal Overload Relay (1SAZ721201R1043) is an electromechanical motor protection device designed to protect three-phase motors against overload conditions and phase failure. Featuring an adjustable current setting range of 7.6 to 10 A and a Class 10 trip characteristic, it provides reliable protection for compatible motor starter applications.
Part of ABB’s TF42 series, the TF42-10 features ambient temperature compensation to maintain consistent protection across its specified operating temperature range. It includes one normally closed (NC) trip contact and one normally open (NO) signal contact for integration into motor starter control and signaling circuits. Additional features include selectable manual or automatic reset, a trip-free mechanism, a STOP function, and trip indication for convenient operation and troubleshooting.
The TF42-10 mounts directly onto compatible ABB AF series contactors, including AF09, AF12, AF16, AF26, AF30, and AF38 models. For installations requiring separate mounting, compatible single-mounting kits are available as accessories. Its compact design makes it suitable for industrial motor control panels, machinery, and electrical automation systems.
Key Features
- Adjustable Current Range: Provides overload protection settings from 7.6 to 10 A for compatible motor applications.
- Class 10 Trip Characteristic: Provides a Class 10 overload response for suitable motor protection applications.
- Overload and Phase Failure Protection: Helps protect motors against sustained excessive current and phase failure.
- Ambient Temperature Compensation: Helps maintain protection performance across the specified operating temperature range.
- Auxiliary Contacts: Includes one normally closed (NC) trip contact and one normally open (NO) signal contact.
- Selectable Reset: Supports manual or automatic reset according to the selected configuration.
- Trip-Free Mechanism: Supports reliable tripping under overload conditions.
- STOP Function and Trip Indication: Provides convenient operation and visual status indication for troubleshooting.
- AF Series Contactor Compatibility: Designed for direct mounting on compatible ABB AF09, AF12, AF16, AF26, AF30, and AF38 contactors.
- Separate Mounting Option: Compatible single-mounting kits are available for installations requiring independent relay mounting.
Specifications
| Technical Specification | Detail |
|---|---|
| Product Model | TF42-10 |
| Product ID (SKU) | 1SAZ721201R1043 |
| Brand / Manufacturer | ABB |
| Product Series | TF42 |
| Product Type | Thermal Overload Relay |
| Setting Range | 7.6–10 A |
| Rated Operational Current | 10 A |
| Number of Poles | 3 |
| Trip Class | Class 10 |
| Auxiliary Contact Configuration | 1 NC + 1 NO |
| Rated Operational Voltage, Main Circuit | 690 V AC |
| Rated Operational Voltage, Auxiliary Circuit | 600 V AC/DC |
| Maximum Operating Voltage (UL/CSA), Main Circuit | 600 V AC |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Conventional Free-Air Thermal Current, NC Contact | 6 A |
| Conventional Free-Air Thermal Current, NO Contact | 4 A |
| Mounting Type | Direct Contactor Mounting |
| Compatible Contactors | ABB AF09, AF12, AF16, AF26, AF30, and AF38 |
| Reset Options | Manual or Automatic, Selectable |
| Ambient Temperature Compensation | Yes |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -50°C to +80°C |
| Degree of Protection | IP20 |
| Main Circuit Conductor Capacity | 18–10 AWG, flexible or stranded conductors |
| Auxiliary Circuit Conductor Capacity | 18–12 AWG, flexible or stranded conductors |
| Product Width | 45 mm |
| Product Height | 88.3 mm |
| Product Depth | 70.5 mm |
| Net Weight | 0.13 kg |
| Applicable Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1 |
| EAN | 4013614398124 |
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