ABB TF42-2.3 (order code 1SAZ721201R1031) is a genuine ABB thermal overload relay: Thermal Overload Relay 1.7-2.3 A, Class 10, 1NO+1NC.
Thermal overload relays are standard parts of every direct-on-line and star-delta starter; a relay that trips repeatedly or no longer resets is replaced with the same type and current range.
More ABB contactors, overload relays and control parts: ABB range.
Technical data
| ABB type | TF42-2.3 |
|---|---|
| ABB order code | 1SAZ721201R1031 |
| Product Name | Thermal Overload Relay |
| Rated Operational Current AC-3 | 2.3 A |
| Number of Auxiliary Contacts NO | 1 |
| Number of Auxiliary Contacts NC | 1 |
| Setting Range | 1.7 … 2.3 A |
| Rated Operational Current | 2.3 A |
| Trip Class | class 10 |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC / DC Main Circuit 690 V AC |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | Auxiliary Circuit 6 kV Main Circuit 6 kV |
| Number of Poles | 3 |
| Number of Protected Poles | 3 |
| Suitable For | AF09 AF12 AF16 AF26 AF30 AF38 |
| Conventional Free-air Thermal Current | Auxiliary Circuit NC 6 A Auxiliary Circuit NO 4 A |
| Rated Frequency | Auxiliary Circuit 50 Hz Auxiliary Circuit 60 Hz Auxiliary Circuit DC Main Circuit 50Hz Main Circuit 60 Hz |
| Degree of Protection | IP20 |
| Wire Stripping Length | Auxiliary Circuit 9 mm Main Circuit 12 mm |
| Tightening Torque | Auxiliary Circuit 1 … 1.5 N·m Main Circuit 1.5 … 2.5 N·m |
| Mounting Position | Position 1 to 5 |
| Power Loss | at Rated Operating Conditions per Pole 1.1 … 2.0 W |
Main data, as listed by ABB
- Setting Range: 1.7 … 2.3 A
- Trip Class: class 10
- Suitable For: AF09 AF12 AF16 AF26 AF30 AF38
- Rated Operational Current AC-3: 2.3 A
- Ambient Air Temperature Compensation: Yes
Typical applications
- Star-delta starters
- Direct-on-line motor starters with AF contactors
- Pumps, fans and compressors
- Conveyors and machine motors
- Replacement of a failed overload relay
Compatibility and replacement
Order with the full type TF42-2.3 or the order code 1SAZ721201R1031; in ABB type designations the last digits select the current range or the coil voltage, so a part with a different suffix is not always a drop-in replacement.
If the old label is worn, send us a photo and we will confirm the matching ABB type before quoting.
What to check first
- Reset mode (manual/automatic)
- Setting range versus the motor full-load current
- Trip class
Frequently asked questions
What trip class does it have?
Class 10, according to ABB’s product data.
Which standards does it meet?
IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 UL 60947-1 UL 60947-4-1, according to ABB’s product data.
What is the setting range?
1.7 … 2.3 A, according to ABB’s product data.
Can I get the datasheet?
The official manufacturer data is the source of the technical values above; we can send the datasheet with the quotation on request.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
