ABB TF42-4.2 Thermal Overload Relay | 3.1A to 4.2A Range, Class 10

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.