RC5-2/440_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Parameters Product Name: RC5‑2/440 surge suppressor Manufacturer: ABB Type: RC‑type surge suppressor accessory for contactor coils Operating Voltage Range: Designed for control circuits with AC supply between 250 V and 440 V AC, 50/60 Hz Function: Limits and attenuates overvoltage peaks and high‑frequency transient voltage spikes generated when contactor coils open Mounting Method: Clip‑on attachment to the contactor or contactor relay base (top or side depending on design) Typical Use Case: Installed with conventional AC contactors to protect control coil circuits and nearby electronics from inductive surges Suitable For Use With: Medium‑sized contactor ranges (e.g., A45 through A110 series and similar ABB contactors) Operating Temperature Range: Approximately –20 °C to +70 °C Construction: Compact module for direct attachment without increasing overall contactor dimensions Weight: Very light, suitable for auxiliary and control circuit applications Application Field: Industrial motor control panels, automation systems, control cabinets — wherever contactor coils are used under AC control conditions

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DESCRIBE

The ABB RC5‑2/440 is a surge suppressor accessory designed to protect contactor coils and related control circuits from high‑energy overvoltage spikes. When an AC electromagnetic contactor coil is de‑energized, the stored magnetic energy can generate transient overvoltages that may interfere with electronics, damage insulation, or harm sensitive components. The RC5‑2/440 unit helps reduce peak overvoltage and suppress high‑frequency transient energy by damping these surge pulses. It attaches directly to the contactor or contactor relay and improves reliability and longevity of control circuitry in industrial motor control and automation systems.

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