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1SAZ721201R1025 — Thermal overload relay
relayPart number: 1SAZ721201R1025
ABB 1SAZ721201R1025 (TF42-1.3) is a thermal overload relay with a 1.0–1.3 A adjustable current range and class 10 trip characteristic. It provides motor overload and phase-failure protection, with selectable manual or automatic reset and one normally open and one normally closed auxiliary contact. The relay mounts directly to a contactor; a separate mounting kit is available for remote mounting.
Looking for ABB 1SAZ721201R1025? This catalogue reference is listed under relay. Send the part number and your equipment details so we can confirm the specification, availability and a quotation including shipping.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ721201R1025 |
| 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 TF42-1.3 |
| 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 | 1.0–1.3 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 1.3 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 | 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 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 cable: 0.75–2.5 mm² |
| Connecting Capacity Main Circuit | Flexible cable: 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 method | Manual or automatic, selectable |
| Main circuit connection | 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 TF42-1.3 cover?
The adjustable overload setting range is 1.0–1.3 A. Check the motor nameplate current and the application requirements before choosing this relay.
Can the 1SAZ721201R1025 be reset manually or automatically?
Yes. The TF42-1.3 provides a choice of manual or automatic reset. The appropriate mode depends on the safety requirements of the equipment.
How is the TF42-1.3 mounted and which contactors is it listed for?
The relay mounts directly to a contactor. It is listed for ABB AF09–AF38 contactors; a separate mounting kit permits mounting away from the contactor. Confirm the exact contactor and equipment details, including the serial number where applicable, before ordering.
What protection and trip class does the TF42-1.3 provide?
It is a class 10 thermal overload relay intended for motor overload and phase-failure protection. Check the complete motor starter protection requirements before selecting it.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.