1SAZ721201R1028 TF42-1.7: motor full-load setting and contactor pairing
ABB's thermal-overload catalog lists the TF42-1.7 under order code 1SAZ721201R1028 with a 1.30–1.70 A setting range and Class 10 trip behavior. The adjustment must be based on the actual motor nameplate and duty.
Verified identification and technical data
| Technical item | Verified value / selection note |
|---|---|
| ABB order code | 1SAZ721201R1028 |
| Type | TF42-1.7 |
| Adjustable current | 1.30–1.70 A |
| Trip class | Class 10 in ABB catalog |
| Protective role | Motor overload, not short-circuit interruption |
| Coordination | Check upstream short-circuit protective device |
For 1SAZ721201R1028 TF42-1.7, the table is an identification and selection aid. A nameplate, ABB order record and the actual installation still govern the final configuration.
Confirm the full type, revision and installation limits before treating any related code as a replacement.
Application decision
Review the duty before choosing 1SAZ721201R1028 TF42-1.7. Use the relay with a properly coordinated contactor and upstream short-circuit device. Check the motor's starting time, ambient conditions and whether reset should be manual or automatic under the machine's safety concept.
The decision for 1SAZ721201R1028 TF42-1.7 should record actual load or process limits, operating environment, normal behavior and the response to a fault. This avoids a selection based only on a familiar series name.
Same-series designation index
The codes below share a product family or an identified order-code relationship with 1SAZ721201R1028 TF42-1.7. They may differ in rating, software, connections, options or approvals; none is automatically interchangeable.
- 1SAZ721201R1031 TF42-2.3
- 1SAZ721201R1043 TF42-10
- 1SAZ721201R1047 4013614398148 TF42-16
- TF42-1.3
- TF42-1.7
- TF42-10
- TF42-13
- TF42-16
- TF42-2.3
- TF42-24 (20–24A)
- TF42-35
- TF42-38
- TF42-4.2 (3.1–4.2A)
- TF42-7.6
- TF42-7.6 1SAZ721201R1040
Installation and proving
For 1SAZ721201R1028 TF42-1.7, With power isolated, record and set the approved motor-current value. Test trip contacts and reset behavior, then verify the motor starts without nuisance trips under its normal process load.
Record the as-left settings, test results and installed interfaces of 1SAZ721201R1028 TF42-1.7. Make the asset record searchable by the complete designation, not only by a short family label.
Order and compatibility gate
When specifying 1SAZ721201R1028 TF42-1.7, Confirm the matching contactor frame, mounting arrangement, auxiliary contacts and circuit diagram. A higher TF42 current range is not an acceptable substitute merely because it clips onto the same contactor.
Send the full designation 1SAZ721201R1028 TF42-1.7, hardware or serial revision, quantity, delivery need and nameplate photograph with the RFQ. Require written confirmation of any proposed successor or option-code change.
Handover record
The buyer and site engineer should agree on a single verified configuration for 1SAZ721201R1028 TF42-1.7, including accessories, documentation and the accepted test procedure. Keep deviations visible to both procurement and maintenance.
Retain 1SAZ721201R1028 TF42-1.7 in the purchase order, asset register and commissioning record. ABB family specifications help identify the device, but the approved project documents determine whether it is suitable for this installation.
