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1SAZ431201R1002 — Thermal overload relay
relayPart number: 1SAZ431201R1002
ABB 1SAZ431201R1002, model TF140DU-110, is a three-pole thermal overload relay with an adjustable 80–110 A setting range and class 10A trip characteristic. It protects motors against overload and phase failure and has selectable manual or automatic reset, 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 | 1SAZ431201R1002 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF140DU-110/TF140DU-110-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 | 80–110 A |
| Rated Operational Voltage | Main circuit: 690 V AC; auxiliary circuit: 500 V AC, 440 V DC |
| Rated Operational Current (I e ) | 110 A |
| Rated Frequency (f) | Main and auxiliary circuits: DC, 50/60 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Main circuit: 8 kV; 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 | IP20 |
| 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 2.1 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 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 is the adjustable current range of ABB 1SAZ431201R1002?
The TF140DU-110 has an adjustable current setting range of 80–110 A. Check the motor nameplate and protection requirements when selecting an overload relay.
What protection and trip class does the TF140DU-110 provide?
It is a class 10A thermal overload relay intended to protect motors against overload and phase failure. The relay is not itself a complete short-circuit protection device.
Does the TF140DU-110 support manual and automatic reset?
Yes. Manual or automatic reset can be selected. It also has STOP and TEST functions and a front trip indication.
What auxiliary contacts and voltage rating does the relay have?
The relay has one normally closed and one normally open auxiliary contact. ABB specifies a main-circuit operational voltage of 690 V AC; the auxiliary circuit is rated 500 V AC and 440 V DC.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.