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1SAZ721201R1040 — Thermal overload relay
relayPart number: 1SAZ721201R1040
ABB 1SAZ721201R1040 is the TF42-7.6 thermal overload relay, with a 5.7–7.6 A adjustable current range. This three-pole relay provides class 10 motor overload protection with phase-loss sensitivity, selectable manual or automatic reset, and one normally open and one normally closed auxiliary contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ721201R1040 |
| Category | Electrical & controls |
| Ex Operating Instructions | ATEX - Operating instructions for thermal overload relay TF42 for potentially explosive areas |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF42-7.6 |
| Product Net Width | 45 mm |
| Product Net Height | 88.3 mm |
| Product Net Depth / Length | 70.5 mm |
| Product Net Weight | 0.13 kg |
| Setting Range | 5.7–7.6 A |
| Rated Operational Voltage | Main circuit: 690 V AC; auxiliary circuit: 600 V AC/DC |
| Rated Operational Current (I e ) | 7.6 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 6 A |
| Rated Operational Current AC-15 (I e ) | (120 V) NC 3 A |
| Rated Operational Current DC-13 (I e ) | (125 V) NC 0.55 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 0.75 ... 4 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Power Loss | at Rated Operating Conditions per Pole 1.1 ... 2.0 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 18-10 AWG |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | Class 10 |
| Reset Mode | Selectable manual or automatic |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Operating Temperature | −25 to +60 °C |
| Terminal Type | Screw terminals |
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 does the ABB TF42-7.6 cover?
ABB 1SAZ721201R1040, also identified as TF42-7.6, has an adjustable overload current range of 5.7 to 7.6 A. Check the motor nameplate current and the starter design before selecting the relay.
Which contactors can the TF42-7.6 mount on?
The relay is listed for ABB AF09 through AF38 contactors and can mount directly to a suitable contactor. Separate mounting uses a suitable mounting kit. Confirm the exact contactor and equipment model, and serial number if available, before ordering.
What protection and reset options does this relay provide?
The TF42-7.6 is a class 10 thermal overload relay with phase-loss sensitivity. It offers selectable manual or automatic reset. Check the complete starter design and protection requirements before use.
What auxiliary contacts are included on the TF42-7.6?
It has one normally closed auxiliary contact and one normally open auxiliary contact. The contacts are used for trip control and signaling; verify the contact ratings against the control circuit.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.