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ABB tf42-24 thermal overload relay 20a - 24a
MPN: 1SAZ721201R1051
Alt. SKU: TF42-24
Special Price
£75.37
£62.81
Regular Price
£115.96
Why Choose the TF42-24 [1SAZ721201R1051]
The TF42-24 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 motor safeguarding. Key technical attributes 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, an integrated STOP function, and clear trip indication for straightforward diagnostics. It is designed for direct mounting onto corresponding block contactors, with single mounting kits available as accessories to ensure secure and compatible installation.
Technical Specification
- Function: Thermal overload relay with trip class 10, providing reliable motor protection against overload and phase failure.
- Rated Operational Current: 24 A.
- Voltage Ratings: Main circuit 690 V AC / 600 V DC; Auxiliary circuit 600 V AC/DC.
- Contact Configuration: 3 poles protected, with 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation & Impulse Withstand Voltage: Rated insulation voltage 690 V; Rated impulse withstand voltage 6 kV for main and auxiliary circuits.
- Degree of Protection: IP20.
- Terminal Types & Capacity: Flexible and rigid cables with ferrules; main circuit 1.5 to 10 mm², auxiliary circuit 0.75 to 4 mm².
- Tightening Torque: Main circuit 2.5 to 2.7 N·m; Auxiliary circuit 1 to 1.2 N·m.
- Mounting Compatibility: Suitable for AF09, AF12, AF16, AF26, AF30, and AF38 contactors.
- Standards Compliance: IEC/EN 60947 series, UL 60947-1 and UL 60947-4-1 certified.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the TF42-24 thermal overload relay?
The TF42-24 thermal overload relay provides reliable protection for motors against overload and phase failure, with a trip class of 10.
What is the rated operational current for this relay?
The rated operational current for the TF42-24 thermal overload relay is 24 A.
What are the voltage ratings for the main and auxiliary circuits?
The main circuit voltage rating is 690 V AC / 600 V DC, and the auxiliary circuit voltage rating is 600 V AC/DC.
What is the degree of protection for this relay?
The TF42-24 thermal overload relay has a degree of protection of IP20.
What types of cables can be connected to the relay?
The relay can accommodate flexible and rigid cables with ferrules; main circuit cables from 1.5 to 10 mm² and auxiliary circuit cables from 0.75 to 4 mm².
Which contactors is the TF42-24 compatible with?
This relay is suitable for mounting with AF09, AF12, AF16, AF26, AF30, and AF38 contactors.
What standards does the TF42-24 comply with?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ721201R1051 |
|---|---|
| Amp Range | 20A - 24A |
| HS Code | 85364900 |
| Country of Manufacture | Germany |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-24 |
| Barcode | 4013614398155 |
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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
