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ABB tf96-78 thermal overload relay 65a - 78a
MPN: 1SAZ911201R1004
Alt. SKU: TF96-78
Special Price
£130.68
£108.90
Regular Price
£201.05
Why Choose the TF96-78 [1SAZ911201R1004]
The TF96-78 thermal overload relay provides cost-effective electromechanical protection for main circuit motors, ensuring reliable and rapid response to overloads and phase failures. Rated with a trip class 10, it features temperature compensation, a normally closed trip contact, a normally open signal contact, and selectable automatic or manual reset options. Additional functionalities include a trip-free mechanism, integrated STOP function, and clear trip indication. Designed for direct mounting on corresponding block contactors, compatible single mounting kits are available as accessories to facilitate installation.
Technical Specification
- Function: Electromechanical thermal overload relay with trip class 10 for motor protection against overload and phase failure.
- Rated Current: 65 to 78 A adjustable setting range, with maximum operational current 78 A.
- Operational Voltage: Main circuit up to 690 V AC / 440 V DC; auxiliary circuit up to 600 V AC/DC.
- Contact Configuration: 3 poles protected; 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation Voltage: Rated insulation voltage 690 V; impulse withstand voltage 6 kV (auxiliary), 8 kV (main circuit).
- Protection Rating: Housing IP20; main circuit terminals IP10.
- Terminal Types and Sizes: Flexible and rigid cables with ferrules; main circuit terminals 6 to 50 mm²; auxiliary circuit terminals 0.75 to 2.5 mm².
- Tightening Torque: Auxiliary circuit 1–1.2 N·m; main circuit 6–9 N·m.
- Additional Features: Temperature compensation, automatic/manual reset selectable, trip-free mechanism, STOP function, and trip indication.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the purpose of the TF96-78 thermal overload relay?
The TF96-78 thermal overload relay provides electromechanical protection for motors against overload and phase failure.
What is the adjustable rated current range for this relay?
The relay has an adjustable setting range of 65 to 78 A, with a maximum operational current of 78 A.
What is the operational voltage for the TF96-78 relay?
The relay operates at a main circuit voltage of up to 690 V AC / 440 V DC and an auxiliary circuit voltage of up to 600 V AC/DC.
What types of cables can be connected to the relay?
The relay can accommodate flexible and rigid cables with ferrules, with main circuit terminals ranging from 6 to 50 mm² and auxiliary circuit terminals from 0.75 to 2.5 mm².
What is the protection rating of the TF96-78 relay?
The housing has an IP20 protection rating, while the main circuit terminals have an IP10 rating.
Does the relay have any additional features?
Yes, it includes temperature compensation, selectable automatic/manual reset, a trip-free mechanism, a STOP function, and trip indication.
What standards and approvals does the TF96-78 relay conform to?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAZ911201R1004 |
|---|---|
| Amp Range | 65A - 78A |
| HS Code | 85364900 |
| Country of Manufacture | China |
| Manufacturer | ABB |
| Alternative Product SKU | TF96-78 |
| Barcode | 4013614483011 |
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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
