
ABB electrical accessory TF42 0.55A 1SAZ741201R1017
- BrandABB
- SeriesTF42
- Maximum rated operating voltage Ue690 V
- Adjustable current range410–550 mA
- Automatic restart functionYes
- Release classCLASS 10
- Number of auxiliary changeover contacts1

The TF42-B thermal overload relays are economic electromechanical protection devices for the main circuit, complying with the latest railway rolling stock stand
| Series | TF42 |
|---|---|
| Electrical | |
| Maximum rated operating voltage Ue | 690 V |
| Adjustable current range | 410–550 mA |
| Release class | CLASS 10 |
| Number of auxiliary changeover contacts | 1 |
| Number of auxiliary break contacts | 1 |
| Number of auxiliary NO contacts | 1 |
| Main electrical circuit connection type | Screw connection |
| Mechanical | |
| Mounting method | Direct attachment |
| Other | |
| Automatic restart function | Yes |
| Type designation | TF42-0.55B |
| Restart function button | Yes |
| Restart input | No |
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