The ABB TF42-35 is a thermal overload relay of the TF range – Thermal Overload Relay 29-35 A, Class 10, 1NO+1NC. ABB order code: 1SAZ721201R1053.
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 | TF42-35 |
|---|---|
| ABB order code | 1SAZ721201R1053 |
| Product Name | Thermal Overload Relay |
| Rated Operational Current AC-3 | 35 A |
| Number of Auxiliary Contacts NO | 1 |
| Number of Auxiliary Contacts NC | 1 |
| Setting Range | 29 … 35 A |
| Rated Operational Current | 35 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 2.5 … 2.7 N·m |
| Mounting Position | Position 1 to 5 |
| Power Loss | at Rated Operating Conditions per Pole 2.1 … 2.8 W |
Main data, as listed by ABB
- Setting Range: 29 … 35 A
- Trip Class: class 10
- Suitable For: AF09 AF12 AF16 AF26 AF30 AF38
- Rated Operational Current AC-3: 35 A
- Ambient Air Temperature Compensation: Yes
Typical applications
- Conveyors and machine motors
- Pumps, fans and compressors
- Star-delta starters
- Direct-on-line motor starters with AF contactors
- Replacement of a failed overload relay
Compatibility and replacement
Order with the full type TF42-35 or the order code 1SAZ721201R1053; 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
- Trip class
- Contactor size it mounts on
- Reset mode (manual/automatic)
Frequently asked questions
What is the protection rating?
IP20, according to ABB’s product data.
What is the AC-3 rating?
35 A, according to ABB’s product data.
Which contactors does it fit?
AF09 AF12 AF16 AF26 AF30 AF38, according to ABB’s product data.
Can you help me identify the right replacement?
Yes. Send us a photo of the label of the old part, or its full order code, and we will confirm the exact match or the official successor before quoting.
Can I get a price and delivery time?
Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.
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.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
