Why this FAQ?
These FAQs explain the design purpose, electrical ratings, durability, compliance standards, installation details, and buying channel for the ABB UA30-30-10RA contactor. They help engineers and buyers quickly confirm suitability for capacitor switching projects.
What is the UA30-30-10RA contactor used for?
The UA30-30-10RA is a 3-pole contactor designed specifically for capacitor switching applications. It incorporates damping resistors to limit high inrush currents during capacitor energization, ensuring reliable operation and longer equipment life. It must be used without additional inductances.
What are the coil voltage ratings for the UA30-30-10RA?
This contactor operates at 230–240 V AC (50 Hz) and 240–260 V AC (60 Hz) coil voltages. Pull-in power is approx. 120–140 VA, and holding power is 12 VA.
What is the rated operational power (kvar) of this capacitor contactor?
At 230/240 V and 40 °C, the UA30-30-10RA supports up to 16 kvar, and at 400/415 V it supports up to 30 kvar. At higher ambient temperatures, the kvar capacity reduces (e.g., 19.5 kvar at 70 °C, 400 V). Refer datasheet for complete derating values.
What are the durability ratings of the UA30-30-10RA?
The electrical durability is 250,000 cycles for Ue ≤ 440 V and 100,000 cycles for 500–690 V. Maximum switching frequency is 240 operations per hour. Mechanical life is higher but depends on application.
What protection and standards does this contactor comply with?
It complies with IEC/EN 60947-1 and IEC/EN 60947-4-1. Rated insulation voltage is up to 1000 V, impulse withstand voltage is 8 kV, and short-circuit protection requires 200 A gG fuses for the main circuit. Degree of protection for terminals is IP20.
What are the dimensions and mounting options?
The unit measures 54 mm (W) × 141 mm (D) × 130 mm (H) and weighs approx. 0.81 kg. It can be DIN rail mounted (TH35) or fixed with M4 screws. Connection capacity is up to 6 mm² for main circuit rigid cables.
Where can I buy ABB UA30-30-10RA in India?
Shansen Enterprises is an authorized ABB channel partner supplying capacitor duty contactors pan-India. Quick delivery and WhatsApp quotes are available.
ABB UA30-30-10RA Capacity Switching Contactor Gallery
