RC4-2/440 Surge Suppressor

The RC4-2/440 surge suppressor is a compact and highly efficient device engineered to mitigate voltage peaks and dampen high-frequency pre-damping voltages generated in control circuits during contactor operation. With a robust design, it minimizes overvoltage spikes reaching several kilovolts that could otherwise compromise circuit integrity.

 

Compatible with AFC40, AFC52, and AFC65 block contactors, this suppressor ensures reliable performance across various industrial environments. It operates effectively within a rated control circuit voltage range of 250–440 V AC at frequencies of 50 or 60 Hz. The screw terminal connection accommodates flexible wires with ferrules (up to 2x 2.5 mm²), rigid solid wires (1/2x up to 2.5 mm²), as well as compliance with UL standards for wire sizes ranging from AWG 18–14.

 

Key mechanical specifications include dimensions of 36 mm width, 44 mm depth, and 32 mm height, weighing just 0.015 kg. Installation features such as a stripping length of 10 mm and tightening torque values of either 1.2 N·m (metric) or circa11 in·lbs (UL standard) provide ease during assembly processes.

 

Designed for operational temperatures spanning -20 °C to +70 °C and storage conditions down to -40 °C or up to +80 °C, the RC4-2/440 meets rigorous environmental durability requirements. Compliance with global regulations like RoHS II Directive (2015/863) ensures adherence to material restrictions for environmentally responsible applications.

 

Furthermore, certifications including CE Declaration of Conformity and UKCA Declaration underscore its suitability for use within European markets alongside North American UL certification approval tailored for high-performance surge suppression in industrial automation contexts.