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ABB tf42-0.31 thermal overload relay 0.23a - 0.31a
MPN: 1SAZ721201R1013
Alt. SKU: TF42-0.31
Special Price
£45.98
£38.32
Regular Price
£70.74
Why Choose the TF42-0.31 [1SAZ721201R1013]
The TF42-0.31 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 modes. The device incorporates a trip-free mechanism, a dedicated STOP function, and clear trip indication for straightforward diagnostics. It is designed for direct mounting onto compatible block contactors, with single mounting kits available separately for ease of installation.
Technical Specification
- Function: Electromechanical 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 Rating: Setting range 0.23 to 0.31 A; Rated operational current 0.31 A.
- Contact Configuration: 3 poles protected; 1 normally closed (NC) trip contact; 1 normally open (NO) signal contact.
- Insulation & Impulse Withstand: Rated insulation voltage 690 V; Rated impulse withstand voltage 6 kV for both main and auxiliary circuits.
- Degree of Protection: IP20.
- Terminal Type & Size: Flexible and rigid conductors, 0.75 to 4 mm²; includes ferrule connection capability.
- Tightening Torque: Auxiliary circuit 1 to 1.2 N·m; Main circuit 1.5 to 2.5 N·m.
- Mechanical Features: Trip-free mechanism, selectable automatic or manual reset, direct mounting to contactors (AF09 to AF38).
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the TF42-0.31 thermal overload relay?
The TF42-0.31 is an electromechanical protection device designed to protect motors against overload and phase failure.
What is the current rating range for the TF42-0.31?
The current setting range is from 0.23 to 0.31 A, with a rated operational current of 0.31 A.
What type of contacts does the TF42-0.31 have?
The relay features a normally closed (NC) trip contact and a normally open (NO) signal contact, with a total of 3 poles protected.
Can the TF42-0.31 be mounted directly to contactors?
Yes, it can be directly mounted to contactors ranging from AF09 to AF38.
What is the degree of protection for the TF42-0.31?
The device has a degree of protection rated at IP20.
What is the tightening torque for the main and auxiliary circuits?
The tightening torque for the auxiliary circuit is 1 to 1.2 N·m, and for the main circuit, it is 1.5 to 2.5 N·m.
What should I refer to for standards and approvals?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ721201R1013 |
|---|---|
| Amp Range | 0.23A - 0.31A |
| HS Code | 85364900 |
| Country of Manufacture | Germany |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-0.31 |
| Barcode | 4013614398018 |
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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
