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ABB tf42-38 thermal overload relay 35a - 38a
MPN: 1SAZ721201R1055
Alt. SKU: TF42-38
Special Price
£84.13
£70.11
Regular Price
£129.43
Why Choose the TF42-38 [1SAZ721201R1055]
The TF42-38 thermal overload relay provides cost-effective electromechanical protection for main motor circuits. Designed to deliver reliable and rapid response to overloads and phase failures, it features a trip class 10 rating for precise thermal protection. Key technical attributes include temperature compensation, a normally closed trip contact, a normally open signal contact, and selectable automatic or manual reset options. The device incorporates a trip-free mechanism, a dedicated STOP function, and clear trip indication for straightforward diagnostics. These overload relays are designed for direct mounting onto corresponding block contactors, with single mounting kits available as optional accessories to ensure seamless integration.
Technical Specification
- Function: Thermal overload relay with trip class 10, providing motor protection against overload and phase failure.
- Rated Operational Current: 38 A.
- Rated Operational Voltage: Main circuit 690 V AC / 600 V DC; Auxiliary circuit 600 V AC/DC.
- Contact Configuration: 3 poles; 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation and Impulse Withstand Voltage: Rated insulation voltage 690 V; Rated impulse withstand voltage 6 kV (main and auxiliary circuits).
- Protection Rating: IP20.
- Terminal Type and Size Range: Flexible cables with ferrules 0.75 to 10 mm²; rigid cables up to 10 mm² for main circuit and up to 4 mm² for auxiliary circuit.
- Tightening Torque: 1 to 1.2 N·m (auxiliary circuit), 2.5 to 2.7 N·m (main circuit).
- Additional Features: Temperature compensation, selectable automatic or manual reset, trip-free mechanism, STOP function, and trip indication.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the TF42-38 thermal overload relay?
The TF42-38 thermal overload relay provides protection for motors against overload and phase failure, with a trip class of 10.
What is the rated operational current of this relay?
The rated operational current is 38 A.
What voltage ratings does the TF42-38 support?
It supports a main circuit voltage of 690 V AC / 600 V DC and an auxiliary circuit voltage of 600 V AC/DC.
What is the protection rating of the TF42-38?
The protection rating is IP20.
What cable sizes are compatible with the TF42-38?
It accommodates flexible cables with ferrules from 0.75 to 10 mm² and rigid cables up to 10 mm² for the main circuit and up to 4 mm² for the auxiliary circuit.
Can the TF42-38 be reset automatically?
Yes, the relay features a selectable automatic or manual reset function.
What additional features does the TF42-38 offer?
Additional features include temperature compensation, a trip-free mechanism, a STOP function, and trip indication.
| Manufacturer Part Number | 1SAZ721201R1055 |
|---|---|
| Amp Range | 35A - 38A |
| HS Code | 85364900 |
| Country of Manufacture | Germany |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-38 |
| Barcode | 4013614398179 |
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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
