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1SAZ431201R1004 — Thermal overload relay
relayPart number: 1SAZ431201R1004
ABB 1SAZ431201R1004 is the TF140DU-142 three-pole thermal overload relay, with an adjustable 110–142 A setting range and trip class 10A. It provides motor overload and phase-failure protection, with selectable manual or automatic reset, temperature compensation, trip indication, STOP and TEST functions, and one normally open and one normally closed auxiliary contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ431201R1004 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF140DU-142/TF140DU-142-V1000 |
| Product Net Width | 89 mm |
| Product Net Height | 140 mm |
| Product Net Depth / Length | 126 mm |
| Product Net Weight | 0.82 kg |
| Setting Range | 110–142 A |
| Rated Operational Voltage | Auxiliary Circuit 440 V DC |
| Rated Operational Current (I e ) | 142 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 10 A |
| Rated Operational Current AC-15 (I e ) | (120 V) NC 3 A |
| Rated Operational Current DC-13 (I e ) | (125 V) NC 0.25 A |
| Degree of Protection | Housing: IP20; main circuit terminals: IP10 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 16 ... 70 mm² |
| Tightening Torque | Auxiliary Circuit 0.8 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Mounting Position | any |
| Power Loss | at Rated Operating Conditions per Pole 2.3 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 6-2/0 AWG |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | 10A |
| Reset Method | Selectable manual or automatic |
| Main Circuit Rated Operational Voltage | 690 V AC; 440 V DC |
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 ABB 1SAZ431201R1004 have?
ABB identifies 1SAZ431201R1004 as the TF140DU-142 thermal overload relay. Its adjustable current setting range is 110–142 A and its trip class is 10A. Check the motor nameplate current and the complete starter design before selecting the relay.
What does the TF140DU-142 protect against?
This three-pole thermal overload relay is designed to protect motors against overload and phase failure. It is an overload relay, not a complete motor starter; the overall installation also needs appropriately selected short-circuit protection.
Does the TF140DU-142 have manual and automatic reset?
Yes. Manual or automatic reset can be selected. It also has a trip indication, STOP and TEST functions, one normally closed trip contact and one normally open signal contact. The control system design must account for the consequences of an automatic restart.
What are the TF140DU-142 voltage ratings and dimensions?
The listed main-circuit operational voltage is 690 V AC; the UL/CSA maximum main-circuit operating voltage is 600 V AC. The relay measures 89 mm wide, 140 mm high and 126 mm deep. Check the applicable circuit and equipment ratings before selection.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.