1SAZ721201R1035
ABB TF42-4.2 provides professional-grade protection for the main motor circuit. Engineered to defend your equipment against overloads and phase failures, it features an adjustable current range of 3.1 to 4.2 Amperes. With Class 10 tripping characteristics, this relay ensures that power is disconnected before motor windings sustain permanent heat damage, making it a critical safety component for your electrical panels.

Key Technical Features:

Bimetallic Thermal Protection: Accurate Class 10 trip curve ensures the motor is protected during prolonged overcurrent.

Phase Failure Sensitivity: Built-in mechanism detects phase loss quickly, preventing motor burnout in unbalanced power conditions.

Ambient Temperature Compensation: Maintains consistent accuracy in environments ranging from -25°C to +60°C.

Flexible Reset Options: Features a selectable Manual/Automatic reset button, plus dedicated Test and Stop functions.

Seamless Integration: Plugs directly into the load side of AF09, AF12, AF16, AF26, AF30, and AF38 contactors without extra wiring.

1SAZ721201R1038
ABB TF42-5.7 offers reliable and economical protection for your motor starters against overloads and phase failures. With an adjustable setting range of 4.2 to 5.7 Amperes, it provides a Class 10 trip characteristic, ensuring that your equipment is disconnected safely before heat damage occurs. Its compact design allows it to integrate perfectly into modern control cabinets while maintaining high sensitivity to phase imbalances.

Key Technical Features:

Bimetallic Overload Protection: Features a Class 10 trip curve for dependable protection against prolonged high-current conditions.

Phase Loss Sensitivity: Specifically designed to detect phase failure, shielding the motor from burnout during unbalanced operation.

Climate Compensation: Maintains accurate tripping performance in ambient temperatures from -25°C to +60°C.

User-Friendly Control: Includes a selectable Manual/Automatic reset, a functional Test button, and a Stop button for emergency disconnection.

Direct Contactor Mounting: Engineered to plug directly into AF09, AF12, AF16, AF26, AF30, and AF38 contactors, saving labor and panel space.

1SAZ721201R1040
Protect your industrial motors with the ABB TF42-7.6, a reliable bimetallic overload relay engineered for the 5.7–7.6 Ampere range. Featuring Class 10 tripping technology, it offers rapid and accurate disconnection during overcurrent events, preventing costly motor burnouts. This relay is specifically designed for the AF series contactors, ensuring a compact and vibration-proof assembly for your motor starters.

Key Technical Features:

Advanced Bimetallic Protection: Class 10 trip curve provides optimized protection for standard motor applications.

Phase Failure Detection: Automatically senses the loss of a phase, triggering a trip to protect the motor from overheating due to unbalanced loads.

Thermal Compensation: Consistent performance in various environments, calibrated for ambient temperatures from -25°C to +60°C.

Operational Control: Includes a manual/automatic reset selector, a test function to simulate tripping, and a stop button for manual intervention.

Plug-and-Play Design: Mounts directly to the load side of AF09, AF12, AF16, AF26, AF30, and AF38 contactors.