Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAZ721201R1045 — Thermal overload relay
relayPart number: 1SAZ721201R1045
ABB TF42-13 (1SAZ721201R1045) is a three-pole thermal overload relay for motor overload and phase-failure protection. It has a 10–13 A adjustable current range, class 10 tripping, one normally closed and one normally open auxiliary contact, and selectable manual or automatic reset.
Looking for ABB 1SAZ721201R1045? 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.
Availability on request
Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ721201R1045 |
| 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 | 10–13 A |
| Rated Operational Voltage | Auxiliary circuit: 600 V AC/DC; main circuit: 690 V AC |
| Rated Operational Current (I e ) | 13 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 | 3P |
| 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 1.3 ... 2.2 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 |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Reset Method | Selectable manual or automatic |
| Terminal Type | Screw terminals |
| 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 the ABB TF42-13 provide?
The TF42-13, part 1SAZ721201R1045, has an adjustable current range of 10–13 A and a class 10 trip characteristic. Check the motor nameplate current and the starter design before selecting the relay.
What does the TF42-13 protect against, and which auxiliary contacts does it have?
This thermal overload relay is intended to protect motors against overload and phase failure. It has one normally closed trip contact and one normally open signalling contact.
Can the TF42-13 be reset manually or automatically?
Yes. The relay allows either manual or automatic reset to be selected. It also has a trip indication and a stop function.
How is the TF42-13 mounted with a contactor?
The relay is designed for direct mounting on suitable ABB AF09 to AF38 block contactors; a separate mounting kit is also available for standalone mounting. Confirm the contactor and starter details before ordering.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.