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ABB tf42-1.7 thermal overload relay 1.3a - 1.7a
MPN: 1SAZ721201R1028
Alt. SKU: TF42-1.7
Special Price
£44.21
£36.84
Regular Price
£68.02
Why Choose the TF42-1.7 [1SAZ721201R1028]
The TF42-1.7 thermal overload relay provides cost-effective electromechanical protection for motor circuits, ensuring rapid and reliable response to overloads and phase failures. Rated with a trip class 10, it incorporates temperature compensation for accurate operation under varying conditions. Key features include a normally closed trip contact, a normally open signal contact, selectable automatic or manual reset, a trip-free mechanism, a STOP function, and clear trip indication. Designed for direct mounting onto corresponding block contactors, the relay can be installed using available single mounting kits for straightforward integration.
Technical Specification
- Function: Thermal overload relay with trip class 10, providing motor protection against overload and phase failure.
- Rated Operational Voltage: Main circuit up to 690 V AC / 600 V DC; Auxiliary circuit up to 600 V AC/DC.
- Setting Range: 1.3 to 1.7 A.
- Contact Configuration: 1 normally closed (NC) trip contact, 1 normally open (NO) signal contact.
- Insulation and Impulse Withstand Voltage: Rated insulation voltage 690 V; impulse withstand voltage 6 kV (main and auxiliary circuits).
- Degree of Protection: IP20.
- Terminal Type and Size Range: Flexible and rigid cables with ferrules; main circuit terminals accept 0.75 to 4 mm² wires; auxiliary circuit terminals 0.75 to 2.5 mm².
- Tightening Torque: 1.5 to 2.5 N·m (main circuit); 1 to 1.2 N·m (auxiliary circuit).
- Mounting: Direct connection to block contactors; single mounting kits available as accessories.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the primary function of the TF42-1.7 thermal overload relay?
The TF42-1.7 thermal overload relay provides motor protection against overload and phase failure, with a trip class of 10.
What is the rated operational voltage for the TF42-1.7?
The rated operational voltage is up to 690 V AC / 600 V DC for the main circuit and up to 600 V AC/DC for the auxiliary circuit.
What is the setting range for the current on the TF42-1.7?
The setting range for the current is from 1.3 to 1.7 A.
What type of contacts does the TF42-1.7 have?
The relay features 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
What is the degree of protection for the TF42-1.7?
The degree of protection is IP20.
What cable sizes are compatible with the TF42-1.7 terminals?
Main circuit terminals accept cables from 0.75 to 4 mm², while auxiliary circuit terminals accept cables from 0.75 to 2.5 mm².
How is the TF42-1.7 mounted?
The TF42-1.7 is designed for direct connection to block contactors, with single mounting kits available as accessories.
| Manufacturer Part Number | 1SAZ721201R1028 |
|---|---|
| Amp Range | 1.3A - 1.7A |
| HS Code | 85364900 |
| Country of Manufacture | Germany |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-1.7 |
| Barcode | 4013614398063 |
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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
