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ABB tf140du-110 thermal overload relay 80a - 110a
MPN: 1SAZ431201R1002
Alt. SKU: TF140DU-110
Special Price
£203.74
£169.78
Regular Price
£313.44
Why Choose the TF140DU-110 [1SAZ431201R1002]
The TF140DU-110 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 10A rating. Key technical attributes include temperature compensation, normally closed trip contacts, normally open signal contacts, and a selectable automatic or manual reset function. The relay incorporates a trip-free mechanism, integrated STOP and test functions, and clear trip indication. It is engineered for direct mounting onto compatible block contactors, ensuring straightforward installation and dependable operation in industrial motor control applications.
Technical Specification
- Function: Electromechanical thermal overload relay for motor protection against overload and phase failure, trip class 10A.
- Rated Current: 80 to 110 A setting range, with a rated operational current of 110 A.
- Rated Voltage: Main circuit up to 690 V AC and 440 V DC; auxiliary circuit up to 500 V AC and 440 V DC.
- Contact Configuration: 3 poles protected; includes 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation & Impulse Ratings: Rated insulation voltage 690 V; impulse withstand voltage 8 kV (main circuit) and 6 kV (auxiliary circuit).
- Degree of Protection: IP20 for housing and main circuit terminals rated IP10.
- Terminal Type & Capacity: Main circuit terminals accept flexible and rigid cables 16–70 mm²; auxiliary terminals accept 0.75–4 mm² cables.
- Tightening Torque: 8–10 N·m for main circuit; 0.8–1.2 N·m for auxiliary circuit.
- Mechanical Features: Trip-free mechanism with selectable automatic or manual reset; suitable for mounting in any position.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the TF140DU-110 thermal overload relay?
The TF140DU-110 is an electromechanical thermal overload relay designed to protect motors against overload and phase failure.
What is the rated current range for this relay?
The rated current setting range for the TF140DU-110 is 80 to 110 A, with a rated operational current of 110 A.
What is the maximum voltage rating for the main circuit?
The main circuit can handle up to 690 V AC and 440 V DC.
What types of cables can be connected to the terminals?
Main circuit terminals accept flexible and rigid cables from 16 to 70 mm², while auxiliary terminals accept cables from 0.75 to 4 mm².
Can the TF140DU-110 be mounted in any position?
Yes, the relay is suitable for mounting in any position.
What is the degree of protection for this relay?
The housing has an IP20 rating, while the main circuit terminals are rated IP10.
What should I refer to for standards and approvals?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ431201R1002 |
|---|---|
| Amp Range | 80A - 110A |
| HS Code | 85364900 |
| Country of Manufacture | Bulgaria |
| Manufacturer | ABB |
| Alternative Product SKU | TF140DU-110 |
| Barcode | 4013614446825 |
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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
