Catalogue reference. Availability, exact specification and OEM or aftermarket supply are confirmed in your quotation.
1SAZ311201R2001 — Thermal overload relay
relayPart number: 1SAZ311201R2001
ABB 1SAZ311201R2001 is a TA42DU-25M three-pole thermal overload relay for motor overload and phase-failure protection. It has an 18–25 A adjustable current range, trip class 10A, 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 | 1SAZ311201R2001 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TA42DU-25, TA42DU-25 V1000, TA75DU-25, TA75DU-25 V1000 |
| Product Net Width | 54 mm |
| Product Net Height | 90 mm |
| Product Net Depth / Length | 111 mm |
| Product Net Weight | 0.335 kg |
| Rated Operational Voltage | Main circuit: 690 V AC; 440 V DC |
| Rated Operational Current (I e ) | 25 A |
| 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 5 A |
| Rated Operational Current AC-15 (I e ) | (120 V) NC 3 A |
| Degree of Protection | Housing and main circuit terminals: IP20 |
| Connecting Capacity Auxiliary Circuit | Flexible 1/2x 0.75 ... 2.5 mm² |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Power Loss | at Rated Operating Conditions per Pole 1.8 ... 3.4 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 8-1 AWG |
| Tightening Torque UL/CSA | Auxiliary Circuit 12 in·lb |
| Ambient Air Temperature | Operation -25 ... +55 °C |
| Resistance to Shock acc. to IEC 60068-2-27 | 25g 2 shocks 13 ms |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Setting Range | 18–25 A |
| Trip Class | 10A |
| Reset Mode | Selectable manual or automatic |
Catalogue information may contain errors or be out of date.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 1SAZ311201R2001 relay have?
The TA42DU-25M has an adjustable current range of 18–25 A and trip class 10A. Check the motor nameplate current and the starter design before selecting the relay.
What motor conditions does the TA42DU-25M protect against?
This three-pole thermal overload relay is designed to protect a motor against overload and phase failure. Confirm the complete protection arrangement for the application before ordering.
Does the TA42DU-25M have automatic and manual reset?
Yes. The relay offers selectable automatic or manual reset, a trip indicator, and STOP and TEST functions. It also has one normally closed trip contact and one normally open signal contact.
Can this overload relay be mounted on an ABB contactor?
The relay connects directly to block contactors; published product data identifies AX32 and AX40. For a particular starter, provide the full contactor and equipment model and serial number so compatibility can be verified. A separate mounting kit is available as an accessory.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.