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ABB tf42-29 thermal overload relay 24a - 29a
MPN: 1SAZ721201R1052
Alt. SKU: TF42-29
Special Price
£76.69
£63.91
Regular Price
£117.98
Why Choose the TF42-29 [1SAZ721201R1052]
The TF42-29 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 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 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 compatible block contactors, with single mounting kits available as accessories to ensure seamless integration.
Technical Specification
- Function: Thermal overload relay with trip class 10 for motor protection against overload and phase failure.
- Voltage Ratings: Main circuit 690 V AC / 600 V DC; Auxiliary circuit 600 V AC/DC.
- Current Setting Range: 24 to 29 A, Rated operational current 29 A.
- Contact Configuration: 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation and Impulse Ratings: Rated insulation voltage 690 V; Rated impulse withstand voltage 6 kV for main and auxiliary circuits.
- Protection Degree: IP20.
- Terminal Types and Sizes: Flexible and rigid cables; Main circuit 1.5 to 10 mm², Auxiliary circuit 0.75 to 4 mm².
- Mechanical Features: Trip-free mechanism, selectable automatic/manual reset, STOP function, and trip indication.
- Compatibility: Suitable for AF09, AF12, AF16, AF26, AF30, and AF38 contactors.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the TF42-29 thermal overload relay?
The TF42-29 thermal overload relay provides electromechanical protection for motors against overload and phase failure, with a trip class of 10.
What is the current setting range for the TF42-29?
The current setting range for the TF42-29 is 24 to 29 A, with a rated operational current of 29 A.
What types of contact configurations does the relay have?
The relay features 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
What is the maximum voltage rating for the main circuit?
The maximum voltage rating for the main circuit is 690 V AC and 600 V DC.
What is the protection degree of the TF42-29?
The protection degree of the TF42-29 is IP20.
Which contactors is the TF42-29 compatible with?
The TF42-29 is compatible with AF09, AF12, AF16, AF26, AF30, and AF38 contactors.
What are the cable sizes for the main and auxiliary circuits?
The main circuit accepts flexible and rigid cables from 1.5 to 10 mm², while the auxiliary circuit accepts cables from 0.75 to 4 mm².
| Manufacturer Part Number | 1SAZ721201R1052 |
|---|---|
| Product Image | For Illustration Purposes Only |
| Amp Range | 24A - 29A |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-29 |
| Barcode | 4016779764988 |
| Product Lead Time | Delivery 2/3 days |
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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
