Description

The ABB UA50-30-00RA AC Contactor ensures safe capacitor bank switching by using front-mounted damping resistors that minimize inrush currents at energization. This resistor assembly precharges capacitors and suppresses peak currents, extending equipment lifespan and improving power factor correction efficiency. Compact and reliable, it’s built for heavy-duty applications requiring frequent switching. For engineered distribution systems, explore our panel building solutions in Egypt.

Key Specifications

• Model: ABB UA50-30-00RA 220-230 V 50 Hz / 230-240 V 60 Hz

• Type: Capacitor Switching Contactor

• Poles: 3 main poles

• Electrical Endurance: 250k ops (Ue < 500 V) / 100k ops (500–690 V)

• Control Circuit: AC, laminated magnet circuit

• Supplied With: Damping resistors

• Mounting: Block-type structure

• Accessories: Full ABB accessory range

Highlights

• Limits both first and second capacitor inrush peaks

• Compact and robust ABB design

• High operational durability for frequent duty cycles

• No need for additional inductances

Typical Uses

• Power factor correction systems

• Industrial capacitor banks

• Large commercial electrical installations

Installation & Support

Delivered fully assembled with resistors for direct integration. ARC Technologies offers ABB system sizing, commissioning, and after-sales support.