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ABB tf96-68 thermal overload relay 57a - 68a
MPN: 1SAZ911201R1003
Alt. SKU: TF96-68
Why Choose the TF96-68 [1SAZ911201R1003]
The TF96-68 thermal overload relay provides cost-effective electromechanical protection for main motor circuits, 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 functions include a trip-free mechanism, a STOP function, and clear trip indication. Designed for direct mounting onto compatible contactor blocks, the relay can be installed using available single mounting kits for straightforward integration.
Technical Specification
- Function: Thermal overload relay with trip class 10 for motor protection against overload and phase failure.
- Current Rating: Setting range 57 to 68 A; rated operational current 68 A.
- Voltage Ratings: Main circuit 690 V AC / 440 V DC; auxiliary circuit 600 V AC/DC.
- Contact Configuration: 3 poles; 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation and Impulse Voltage: Rated insulation voltage 690 V; impulse withstand voltage 8 kV (main), 6 kV (auxiliary).
- Degree of Protection: Housing IP20; main circuit terminals IP10.
- Terminal Type and Size: Main circuit terminals accept flexible and rigid cables 6 to 50 mm²; auxiliary circuit terminals accept 0.75 to 4 mm².
- Tightening Torque: Auxiliary circuit 1 to 1.2 N·m; main circuit 6 to 9 N·m.
- Mechanical Features: Trip-free mechanism, selectable automatic/manual reset, mounting compatible with AF80 and AF96 contactors.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the current rating of the TF96-68 thermal overload relay?
What voltage ratings does the TF96-68 support?
What type of contact configuration does the TF96-68 have?
What is the degree of protection for the TF96-68?
What is the cable capacity for the terminals of the TF96-68?
Is the TF96-68 compatible with specific contactors?
What should I refer to for standards and approvals of the TF96-68?
| Manufacturer Part Number | 1SAZ911201R1003 |
|---|---|
| Amp Range | 57A - 68A |
| HS Code | 85364900 |
| Country of Manufacture | China |
| Manufacturer | ABB |
| Alternative Product SKU | TF96-68 |
| Barcode | 4013614483004 |
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