Catalogue reference. Availability, exact specification and OEM or aftermarket supply are confirmed in your quotation.
1SAZ321201R2004 — Thermal overload relay
relayPart number: 1SAZ321201R2004
ABB 1SAZ321201R2004, type TA75DU-52M, is a three-pole thermal overload relay for motor protection against overload and phase failure. Its adjustable current range is 36–52 A and its trip class is 10A. It has selectable manual or automatic reset, one normally closed trip contact and one normally open signal contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ321201R2004 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TA75DU-52, TA75DU-52 V1000, TA80DU-52, TA80DU-52 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 ) | 52 A |
| 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 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 1.7 ... 3.5 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 |
| Connecting Capacity Auxiliary Circuit UL/CSA | Flexible 1/2x 18-14 AWG |
| Tightening Torque UL/CSA | Auxiliary Circuit 12 in·lb |
| Ambient Air Temperature | Operation: -25 to +55 °C; storage: -40 to +70 °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 |
| Current setting range | 36–52 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Catalogue information may contain errors or be out of date.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 TA75DU-52M provide?
The 1SAZ321201R2004 has an adjustable overload current range of 36–52 A and a trip class of 10A. Check the motor nameplate and installation requirements to determine whether this range is appropriate.
What motor faults does the 1SAZ321201R2004 protect against?
This thermal overload relay is intended to protect motors against overload and phase failure. It is an electromechanical protection device for the main circuit.
Does the TA75DU-52M have manual and automatic reset?
Yes. Manual or automatic reset can be selected. The relay also has a trip indicator and test and stop functions.
How is the TA75DU-52M mounted, and how can I check contactor fit?
The relay connects directly to block contactors; a separate mounting kit is an accessory. The listed contactor types include AX50, AX65 and AX80. For an existing installation, provide the contactor and equipment model and serial number to verify fitment.
What auxiliary contacts and operating voltage does this relay have?
It has one normally closed trip contact and one normally open signal contact. The main circuit is rated at 690 V AC; the listed UL/CSA maximum main-circuit operating voltage is 600 V AC.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.