Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAZ811201R1001 — Thermal overload relay
relayPart number: 1SAZ811201R1001
ABB 1SAZ811201R1001 (TF65-28) is a thermal overload relay with a 22–28 A adjustable current range and class 10 trip characteristic. It provides motor overload and phase-failure protection, with selectable manual or automatic reset and one normally closed and one normally open auxiliary contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ811201R1001 |
| Category | Electrical & controls |
| Ex Operating Instructions | ATEX - Operating instructions for thermal overload relay TF65 for potentially explosive areas |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF65-28 |
| Product Net Width | 54.9 mm |
| Product Net Height | 101.4 mm |
| Product Net Depth / Length | 106.9 mm |
| Product Net Weight | 0.372 kg |
| Setting Range | 22–28 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 28 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 | Housing IP20 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 2.5 ... 10 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Mounting Position | 1 ... 6 |
| Power Loss | at Rated Operating Conditions per Pole 1.9 ... 3.1 W |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600 |
| 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 closed trip contact; 1 normally open signal contact |
| Reset Mode | Selectable manual or automatic |
| Protection Functions | Thermal overload and phase-failure protection |
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 is the adjustable current range of ABB 1SAZ811201R1001?
The TF65-28 has an adjustable current setting range of 22–28 A and a rated current of 28 A. Check the motor nameplate and starter configuration to determine whether this range is appropriate.
What protection and trip class does the TF65-28 provide?
It is a class 10 thermal overload relay intended to protect motors against overload and phase failure. It is not a substitute for appropriately selected short-circuit protection.
Which contactors can the TF65-28 mount on?
The TF65-28 is described as mounting directly to ABB AF40 through AF65 contactors. Confirm the complete contactor reference and mounting arrangement before ordering; equipment fitment cannot be assumed from the relay number alone.
What auxiliary contacts and reset options does the TF65-28 have?
It has one normally closed trip contact and one normally open signal contact, with selectable manual or automatic reset. It also has trip indication and a stop function.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.