We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
ABB tf42-3.1 thermal overload relay 2.3a - 3.1a
MPN: 1SAZ721201R1033
Alt. SKU: TF42-3.1
Special Price
£44.21
£36.84
Regular Price
£68.02
Why Choose the TF42-3.1 [1SAZ721201R1033]
The TF42-3.1 thermal overload relay provides cost-effective, electromechanical protection for motor main circuits. It delivers dependable, rapid response to overload conditions and phase failure, with a trip class 10 rating. Key features include temperature compensation, a normally closed trip contact, a normally open signal contact, selectable automatic or manual reset, a trip-free mechanism, a dedicated STOP function, and clear trip indication. Designed for direct mounting onto compatible block contactors, the relay also supports single mounting kits available separately as accessories.
Technical Specification
- Function: Thermal overload relay with trip class 10 for motor protection against overload and phase failure.
- Voltage Ratings: Main circuit up to 690 V AC / 600 V DC; Auxiliary circuit up to 600 V AC/DC.
- Current Rating: Adjustable setting range from 2.3 to 3.1 A; Rated operational current 3.1 A.
- Contact Configuration: 3 poles; 1 Normally Closed (NC) trip contact; 1 Normally Open (NO) signal contact.
- Insulation & Impulse Withstand: Rated insulation voltage 690 V; impulse withstand voltage 6 kV.
- Degree of Protection: IP20.
- Terminal Type & Size Range: Flexible and rigid conductors with ferrules, 0.75 to 4 mm² for main and auxiliary circuits.
- Tightening Torque: Auxiliary circuit 1 to 1.2 N·m; Main circuit 1.5 to 2.5 N·m.
- Additional Features: Automatic/manual reset selectable, trip-free mechanism, STOP function, 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 TF42-3.1 thermal overload relay?
The TF42-3.1 thermal overload relay provides protection for motors against overload and phase failure, featuring a trip class of 10.
What are the voltage ratings for the TF42-3.1?
The main circuit voltage rating is up to 690 V AC / 600 V DC, and the auxiliary circuit is rated up to 600 V AC/DC.
What is the current rating range for this relay?
The adjustable setting range is from 2.3 to 3.1 A, with a rated operational current of 3.1 A.
How is the TF42-3.1 mounted?
The relay can be directly connected to block contactors, and single mounting kits are available as accessories.
What type of conductors can be used with the TF42-3.1?
It accommodates flexible and rigid conductors with ferrules, ranging from 0.75 to 4 mm² for both main and auxiliary circuits.
What is the degree of protection for this relay?
The TF42-3.1 has a degree of protection rated at IP20.
Are there any standards or approvals for the TF42-3.1?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ721201R1033 |
|---|---|
| Product Image | For Illustration Purposes Only |
| Amp Range | 2.3A - 3.1A |
| HS Code | 85364900 |
| Country of Manufacture | Germany |
| Manufacturer | ABB |
| Alternative Product SKU | TF42-3.1 |
| Barcode | 4013614398087 |
| Product Lead Time | Delivery 2/3 days |
Write Your Own Review
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
