Description
The ABB TF42-20 (Product ID: 1SAZ721201R1049) is an economical, reliable electromechanical thermal overload relay designed for main circuit motor protection. Engineered for adjustable current ranges from 16 A to 20 A, it provides fast, dependable safeguarding against motor overloads and phase failures with a Trip Class 10 rating.
Featuring a trip-free mechanism with temperature compensation, the TF42-20 includes a normally closed (NC) trip contact and a normally open (NO) signal contact. It offers selectable automatic or manual reset modes, an integrated STOP function, and clear trip indication. Designed to mount directly onto block contactors, it ensures robust operational safety for industrial motor applications.
Key Features
- Reliable Motor Protection: Safeguards motors against overloads and phase failures in compliance with Trip Class 10 standards.
- Adjustable Current Range: Calibrated for precise thermal protection between 16 A and 20 A.
- Auxiliary Contacts: Equipped with standard 1 NC trip contact and 1 NO signal contact for comprehensive monitoring.
- Selectable Reset & Controls: Features user-selectable automatic or manual reset, an integrated STOP function, and mechanical trip indication.
- Direct Contactor Mounting: Easily connects directly to block contactors, with single mounting kits available as accessories.
Specifications
| Technical Specification | Detail |
|---|---|
| Product Model | TF42-20 |
| Brand / Manufacturer | ABB |
| Product ID | 1SAZ721201R1049 |
| EAN / UPC Code | 4016779764971 |
| Product Type | Thermal Overload Relay |
| Adjustable Current Range | 16 A to 20 A |
| Trip Class | Class 10 |
| Auxiliary Contacts | 1 NC (Trip) + 1 NO (Signal) |
| Reset Type | Selectable Automatic or Manual |
| Mounting Type | Direct mount to block contactors (Single mounting kits optional) |
| Primary Applications | Industrial motor protection, overload isolation, and phase-failure safeguarding |
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