Description

The ABB UA16-30-10RA AC contactor protects capacitor banks by inserting three damping resistors in series during energization, limiting the initial current surge and precharging capacitors before the main poles close. This design curbs both first and second current peaks for longer equipment life. For complementary LV gear and power components, explore our ABB low and medium voltage distribution solutions.

Key Specifications

• Model: ABB UA16-30-10RA 220-230 V 50 Hz / 230-240 V 60 Hz

• Poles: 3 main, 1 auxiliary built-in

• Operation: AC, laminated magnet circuit

• Endurance: 250k ops for Ue < 500 V, 100k ops for 500–690 V

• Requirement: Use without additional inductances

• Supplied: With damping resistors, block-type

Highlights

• Resistors limit inrush and protect capacitor banks

• Precharging reduces second peak at main pole closure

• Proven endurance for repetitive duty cycles

• Compact front-mounted resistor assembly

Typical Uses

• Small to medium PFC steps

• Packaged capacitor modules

• Commercial and light industrial PFC

Installation & Support

Ships complete for fast panel integration. ARC Technologies provides sizing, thermal checks, and maintenance plans for ABB PFC contactors.