ABB TF42-20 Thermal Overload Relay | 16A to 20A Range, Class 10

1SAZ721201R1049
ABB TF42-20 provides superior motor protection for high-demand electrical circuits. Designed to safeguard against thermal overloads and phase failures, it features an adjustable current range of 16.0 to 20.0 Amperes. With its Class 10 trip characteristics, it offers the perfect balance between allowing for heavy motor start-ups and providing rapid disconnection during fault conditions to prevent stator winding damage.

Key Technical Features:

Bimetallic Thermal Protection: Reliable Class 10 trip curve ensures precision safety for standard three-phase motors.

Phase Failure Sensitivity: Built-in protection that reacts immediately to phase loss, preventing motor failure in unbalanced power conditions.

Ambient Temperature Compensation: Calibrated to maintain accurate tripping performance in ambient temperatures from -25°C to +60°C.

Full Operator Interface: Features a Manual/Auto reset selector, a Stop button, and a Test function for routine safety maintenance.

Direct Contactor Mounting: Optimized for a seamless, cable-free connection to the load side of AF26, AF30, and AF38 contactors.