Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAZ211201R1040 — TA25DU-8.5 Thermal Overload Relay
relayPart number: 1SAZ211201R1040
ABB TA25DU-8.5 (1SAZ211201R1040) is a three-pole thermal overload relay with a 6.0–8.5 A adjustable current range and trip class 10A. It provides motor overload and phase-loss protection, with one normally closed and one normally open auxiliary contact, selectable manual or automatic reset, and test and stop functions.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ211201R1040 |
| Category | Electrical & controls |
| Published component description | TA25DU-8.5 Thermal Overload Relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Current setting range | 6.0–8.5 A |
| Trip class | 10A |
| Main poles | 3 |
| Auxiliary contacts | 1 normally open and 1 normally closed |
| Reset mode | Selectable manual or automatic |
| Terminal type | Screw terminals |
| Dimensions (W × H × D) | 44 × 80 × 94 mm |
| Ambient operating temperature | −25 to +55 °C |
| Net weight | 0.150 kg |
Catalogue information may contain errors or be out of date.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 TA25DU-8.5 cover?
ABB lists part 1SAZ211201R1040 with a 6.0–8.5 A adjustable current setting and trip class 10A. Check the motor nameplate and the complete application before selecting the relay.
What protection and auxiliary contacts does this overload relay provide?
The relay provides thermal motor overload protection and phase-loss sensitivity. It has one normally closed trip contact and one normally open signalling contact; it is not a substitute for a correctly selected short-circuit protective device.
Can the TA25DU-8.5 reset automatically after a trip?
Yes. Manual or automatic reset can be selected. Automatic reset may allow the motor to restart unexpectedly, so the control system and safety requirements must be assessed by a qualified person.
How can I confirm this relay will replace the unit in my equipment?
Match the complete relay part number and current range, and check the motor nameplate, contactor and mounting arrangement. For equipment-specific confirmation, provide the equipment model and serial number along with the existing relay and contactor details.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.