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ABB tf140du-90 thermal overload relay 66a - 90a
MPN: 1SAZ431201R1001
Alt. SKU: TF140DU-90
Special Price
£181.64
£151.37
Regular Price
£279.46
Why Choose the TF140DU-90 [1SAZ431201R1001]
The TF140DU-90 thermal overload relay provides cost-effective electromechanical protection for motor circuits, ensuring rapid and reliable response to overloads and phase failures. Rated with a trip class 10A, it features temperature compensation for accurate operation under varying conditions. The relay includes a normally closed trip contact, a normally open signal contact, and offers selectable automatic or manual reset options. Additional functionalities include a trip-free mechanism, STOP and test functions, and clear trip indication. Designed for direct mounting on block contactors, this relay integrates seamlessly into motor control assemblies for dependable protection.
Technical Specification
- Function: Electromechanical thermal overload relay with trip class 10A for motor protection against overload and phase failure.
- Rating: Setting range 66–90 A, rated operational current 90 A.
- 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; 1 normally closed (NC) trip contact; 1 normally open (NO) signal contact.
- Insulation & Impulse Withstand Voltage: Rated insulation voltage 690 V; impulse withstand 8 kV (main), 6 kV (auxiliary).
- Degree of Protection: IP20 housing and main circuit terminals IP10.
- Terminal Capacity: Main circuit terminals accept 16–70 mm² flexible or rigid cable; auxiliary circuit 0.75–4 mm² flexible or rigid.
- Tightening Torque: Main circuit 8–10 N·m; auxiliary circuit 0.8–1.2 N·m.
- Mechanical Features: Trip-free mechanism, automatic/manual reset selectable, STOP and test functions, compact 0.82 kg weight.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the trip class of the TF140DU-90 thermal overload relay?
The TF140DU-90 thermal overload relay has a trip class of 10A.
What is the rated operational current for this relay?
The rated operational current is 90 A.
What is the voltage rating for the main circuit?
The main circuit can handle up to 690 V AC and 440 V DC.
What type of contacts does the relay have?
The relay features 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
What is the cable capacity for the main circuit terminals?
The main circuit terminals accept 16–70 mm² flexible or rigid cable.
Is the relay suitable for automatic reset?
Yes, the relay has an automatic/manual reset selectable feature.
What is the degree of protection for the TF140DU-90?
The relay has an IP20 housing and IP10 for main circuit terminals.
| Manufacturer Part Number | 1SAZ431201R1001 |
|---|---|
| Amp Range | 66A - 90A |
| Manufacturer | ABB |
| Alternative Product SKU | TF140DU-90 |
| Barcode | 4013614446818 |
| Product Lead Time | Please contact us for a delivery time |
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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
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