Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAZ721201R1043 — Thermal overload relay
relayPart number: 1SAZ721201R1043
ABB TF42-10 (1SAZ721201R1043) is a three-pole thermal overload relay with an adjustable 7.6–10 A setting and class 10 tripping. Designed for motor overload protection with phase-loss sensitivity, it features temperature compensation, selectable manual or automatic reset, and STOP and TEST functions.
Looking for ABB 1SAZ721201R1043? This catalogue reference is listed under relay. Send the part number and your equipment details so we can confirm the specification, availability and a quotation including shipping.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ721201R1043 |
| Category | Electrical & controls |
| Ex Operating Instructions | ATEX - Operating instructions for thermal overload relay TF42 for potentially explosive areas |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF42-10 |
| Product Net Width | 45 mm |
| Product Net Height | 88.3 mm |
| Product Net Depth / Length | 70.5 mm |
| Product Net Weight | 0.13 kg |
| Setting Range | 7.6–10 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 10 A |
| Rated Frequency (f) | Auxiliary Circuit 50 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Auxiliary Circuit 6 kV |
| Rated Insulation Voltage (U i ) | 690 V |
| Number of Poles | 3 |
| Number of Auxiliary Contacts NC | 1 |
| Number of Auxiliary Contacts NO | 1 |
| Number of Protected Poles | 3 |
| Conventional Free-air Thermal Current (I th ) | Auxiliary Circuit NC 6 A |
| Rated Operational Current AC-15 (I e ) | (120 V) NC 3 A |
| Rated Operational Current DC-13 (I e ) | (125 V) NC 0.55 A |
| Degree of Protection | IP20 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 0.75 ... 4 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Power Loss | at Rated Operating Conditions per Pole 1.1 ... 2.0 W |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600 |
| Connecting Capacity Main Circuit UL/CSA | Flexible 1/2x 18-10 AWG |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | Class 10 |
| Terminal Type | Screw terminals |
| Reset Mode | Selectable manual or automatic |
| Ambient Air Temperature | Operation: −25 to +60 °C; storage: −50 to +80 °C |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What current range and trip class does ABB TF42-10 have?
ABB 1SAZ721201R1043 is the TF42-10, with an adjustable overload setting of 7.6–10 A and trip class 10. Check the motor rated current and starter design before selecting the relay.
Does the TF42-10 protect against short circuits as well as overloads?
The relay provides motor overload protection and phase-loss sensitivity. ABB specifies that the overload relay also needs short-circuit protection; select the protective device for the complete installation using ABB documentation.
Can the TF42-10 be reset manually or automatically?
Yes. The relay offers selectable manual or automatic reset, along with status indication and STOP and TEST functions. The effect of a reset depends on the equipment control circuit.
How is the ABB TF42-10 mounted?
ABB lists the TF42-10 for direct mounting on AF09–AF38 block contactors. A separate single-mounting kit is also available. Confirm the exact contactor and starter configuration before ordering.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.