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ABB tf65-28 thermal overload relay 22a - 28a
MPN: 1SAZ811201R1001
Alt. SKU: TF65-28
Special Price
£79.56
£66.30
Regular Price
£122.40
Why Choose the TF65-28 [1SAZ811201R1001]
The TF65-28 thermal overload relay provides cost-effective electromechanical protection for main motor circuits. Designed to deliver reliable and rapid response to overload conditions and phase failure, it features a trip class 10 rating. Key functions include temperature compensation, a normally closed trip contact, a normally open signal contact, and selectable automatic or manual reset options. The relay incorporates a trip-free mechanism, a STOP function, and clear trip indication for straightforward diagnostics. It is directly mounted onto corresponding block contactors, with single mounting kits available as accessories for flexible installation.
Technical Specification
- Function: Electromechanical thermal overload relay with trip class 10 for motor protection against overload and phase failure.
- Voltage Ratings: Main circuit up to 690 V AC / 440 V DC; auxiliary circuit up to 600 V AC/DC.
- Current Setting Range: 22 to 28 A with 28 A rated operational current.
- Contact Configuration: 3-pole protected with 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation & Impulse Withstand Voltage: Rated insulation voltage 690 V; impulse withstand voltage 8 kV (main circuit), 6 kV (auxiliary circuit).
- Degree of Protection: Housing IP20; main circuit terminals IP10.
- Terminal Types & Size Ranges: Flexible and rigid cables with ferrules, 0.75 to 35 mm² for main circuit; 0.75 to 4 mm² for auxiliary circuit.
- Mechanical Data: Tightening torque 4.0–4.5 N·m (main), 1.0–1.2 N·m (auxiliary); wire stripping length 17 mm (main), 9 mm (auxiliary).
- Additional Features: Temperature compensation, selectable automatic/manual reset, trip-free mechanism, STOP function, trip indication.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the main function of the TF65-28 thermal overload relay?
The TF65-28 thermal overload relay provides electromechanical protection for motors against overload and phase failure.
What is the current setting range for this relay?
The current setting range for the TF65-28 relay is 22 to 28 A, with a rated operational current of 28 A.
What voltage ratings does the TF65-28 support?
The relay supports main circuit voltage ratings up to 690 V AC / 440 V DC and auxiliary circuit ratings up to 600 V AC/DC.
What type of contacts does the TF65-28 relay have?
The relay features a 3-pole configuration with 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
What is the degree of protection for the TF65-28 relay?
The housing has an IP20 rating, while the main circuit terminals are rated IP10.
What cable sizes are compatible with the TF65-28 relay?
The relay accommodates flexible and rigid cables with ferrules from 0.75 to 35 mm² for the main circuit and 0.75 to 4 mm² for the auxiliary circuit.
Are there any specific standards or approvals for the TF65-28 relay?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ811201R1001 |
|---|---|
| Product Image | For Illustration Purposes Only |
| Amp Range | 22A - 28A |
| Manufacturer | ABB |
| Alternative Product SKU | TF65-28 |
| Barcode | 4013614482915 |
| Product Lead Time | Please contact us for a delivery time |
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Motor protection for overload and phase failure
Thermal overload relays are economic electromechanical protection devices for the main circuit. They offer reliable protection for motors in the event of overload or phase failure. The thermal overload relay can make up a compact starting solution together with contactors.
Main Benefits:
- Reliable protection for motors
- Easy to create starters
- Optimized match to ABB contactors
- Single mounting kits and wire reset for
remote control available for specific applications
Main Features:
- Adjustable current setting ranges
- Overload protection with phase loss sensitivity
- Temperature compensation up to +60°C
- Automatic or manual reset, sealable
- Stop and test function
