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1SAZ211201R1021 — TA25DU-1.0 Thermal Overload Relay 0.63 ... 1.0 A
relayPart number: 1SAZ211201R1021
ABB TA25DU-1.0 (1SAZ211201R1021) is a three-pole thermal overload relay for motor protection against overload and phase failure. It has a 0.63–1.0 A adjustable setting range, class 10A trip characteristic, 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 | 1SAZ211201R1021 |
| Category | Electrical & controls |
| Published component description | TA25DU-1.0 thermal overload relay, 0.63–1.0 A |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Current setting range | 0.63–1.0 A |
| Trip class | 10A |
| Number of poles | 3 |
| Protected poles | 3 |
| Auxiliary contacts | 1 normally closed and 1 normally open |
| Reset | Selectable manual or automatic |
| Rated operational current | 1 A |
| Rated operational voltage, main circuit | 690 V AC |
| Rated operational voltage, auxiliary circuit | 500 V AC; 440 V DC |
| Degree of protection | Housing IP20; main circuit terminals IP10 |
Catalogue information may contain errors or be out of date.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 TA25DU-1.0 have?
The relay has an adjustable current setting range of 0.63–1.0 A and trip class 10A. Check the motor nameplate current and protection requirements before selection; class 10A is a trip classification, not a 10 A current setting.
Does the TA25DU-1.0 protect against phase failure as well as overload?
It is a thermal overload relay intended to protect motors against overload and phase failure. Check the complete motor protection scheme and the equipment documentation before use.
Can the TA25DU-1.0 be reset manually or automatically?
Yes. Manual and automatic reset modes are selectable. It also has a trip indication and stop and test functions.
What auxiliary contacts and operating voltage does this relay have?
It has one normally closed trip contact and one normally open signal contact. Its listed rated operational voltage is 690 V AC for the main circuit; auxiliary circuit ratings differ.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.