ABB UA16-30-10RA Capacitor Switching Contactor

Meet the ABB UA16-30-10RA Capacitor Switching Contactor — a compact, reliable 3-pole contactor with built-in damping resistors for safe, repeatable switching of power factor correction (PFC) capacitor banks. Rated for 220–230 V AC (50 Hz) / 230–240 V AC (60 Hz) coils, it’s engineered for long life and smooth inrush control in demanding installations.

Key Features at a Glance

• 3-pole block-type contactor with 1 built-in NO auxiliary contact

• Purpose-built for capacitor switching (AC-6b) with serially inserted damping resistors

• Electrical durability: up to 250,000 cycles (Ue ≤ 440 V) / 100,000 cycles (500–690 V)

• Rated insulation voltage up to 1000 V (per IEC 60947-4-1); impulse withstand 8 kV

• Short-time withstand current: 140 A (0.1 s) / 100 A (1 s)

• Max electrical switching frequency: 240 ops/hour

• DIN-rail TH35 or screw mounting (2× M4)

• IP20 protected terminals; compact size: 44 mm (W) × 107 mm (D) × 120 mm (H)

• Made in India; wide accessory range available

• ABB quality with global IEC/EN compliance

Why Choose This Product
UA..RA contactors insert three damping resistors ahead of the main poles to pre-charge capacitors and tame the inrush peak at energization. That means cleaner switching, fewer nuisance trips, and longer life for your PFC components. If you’re building or maintaining capacitor banks and want dependable performance from a compact ABB unit, UA16-30-10RA is a smart, hassle-free pick.

Ideal For

• Power factor correction (PFC) panels and capacitor bank switching

• Industrial distribution boards and MCCs

• HVAC plants, compressors, and chiller systems with PFC stages

• OEM panel builders seeking IEC-compliant AC-6b performance

• Retrofit projects where space and reliability matter

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