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1SAZ811201R1005 — Thermal overload relay
relayPart number: 1SAZ811201R1005
ABB 1SAZ811201R1005, also designated TF65-53, is a three-pole thermal overload relay for motor overload and phase-failure protection. It has an adjustable 44–53 A setting range, class 10 trip characteristic, temperature compensation, selectable manual or automatic reset, and trip indication.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ811201R1005 |
| Category | Electrical & controls |
| Ex Operating Instructions | ATEX - Operating instructions for thermal overload relay TF65 for potentially explosive areas |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay TF65-53 |
| Product Net Width | 54.9 mm |
| Product Net Height | 101.4 mm |
| Product Net Depth / Length | 106.9 mm |
| Product Net Weight | 0.372 kg |
| Setting Range | 44–53 A |
| Rated Operational Voltage | Main circuit: 690 V AC or 440 V DC; auxiliary circuit: 600 V AC/DC |
| Rated Operational Current (I e ) | 53 A |
| Rated Frequency (f) | Main circuit: 50/60 Hz; auxiliary circuit: 50/60 Hz or DC |
| 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 | 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 2.5 ... 10 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Mounting Position | 1 ... 6 |
| Power Loss | at Rated Operating Conditions per Pole 2.5 ... 3.6 W |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600 |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | Class 10 |
Catalogue information may contain errors or be out of date.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 current setting range and trip class of ABB 1SAZ811201R1005?
The TF65-53 has an adjustable setting range of 44–53 A and a class 10 trip rating. Check the motor nameplate current and application requirements before selecting the relay.
Which contactors can the TF65-53 overload relay mount on?
The product catalogue lists ABB AF40, AF52 and AF65 contactors. It connects directly to block contactors, and a single-mounting kit is available separately. Verify the full contactor and equipment details, including serial number where applicable, before ordering.
What protection does the TF65-53 provide?
This three-pole thermal overload relay is intended for motor protection against overload and phase failure. It has temperature compensation and a trip indication.
Does the TF65-53 have manual and automatic reset options?
Yes. The relay has selectable manual or automatic reset, a STOP function and trip indication. It also has one normally closed trip contact and one normally open signal contact.
What are the voltage ratings and dimensions of this relay?
The listed main-circuit ratings are 690 V AC and 440 V DC; the auxiliary circuit is rated 600 V AC/DC. The relay measures 54.9 mm wide, 101.4 mm high and 106.9 mm deep. Check the applicable circuit and installation requirements before selection.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.