Meet the ABB UA26-30-10RA Capacitor Switching Contactor—a robust, 3-pole block contactor engineered for reliable capacitor bank switching. It comes factory-fitted with a special front block and damping resistors to limit inrush peaks and pre-charge capacitors, protecting your system and extending equipment life. Extended product type: UA26-30-10RA (220–230 V 50 Hz / 230–240 V 60 Hz). Product ID: 1SBL241024R8010. EAN: 3471522301802. Made in India.

Key Features at a Glance

• Purpose-built for capacitors (AC-6b) with series damping resistors pre-installed

• 3 main poles (NO) + 1 built-in auxiliary NO (3-0-10 configuration)

• Rated operational voltage: Main & Auxiliary up to 690 V; Ui: up to 1000 V (per IEC 60947-4-1)

• Impulse withstand (Uimp): 8 kV

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

• Max electrical switching frequency: 240 cycles/hour

• Coil: AC 50/60 Hz, 220–230 V (50 Hz) / 230–240 V (60 Hz)

• Inrush control: pre-charge + current peak damping on energization; use without additional inductances

• Short-circuit protection: gG type fuses (Main 125 A, Auxiliary 10 A)

• Terminal protection: IP20 for main, auxiliary, and coil terminals

• Mounting: DIN rail (TH35-7.5 / TH35-15) or screw mounting (2 × M4, diagonal)

• Compact & sturdy: 54 × 126.3 × 120 mm, approx. 0.71 kg

Why Choose This Product

UA..RA contactors are designed specifically for capacitor switching where inrush peaks can exceed 100× nominal RMS current. The factory-integrated resistor block inserts three damping resistors in series during energization, pre-charging the capacitors and taming the initial and secondary peaks—resulting in smoother engagement, longer capacitor life, and fewer nuisance trips. With strong IEC compliance, high electrical endurance, and easy DIN-rail mounting, this contactor is a dependable choice for new APFC panels or retrofit upgrades.

Ideal For

• LV power factor correction (PFC) banks and APFC panels

• Industrial switchboards and MCCs

• Commercial buildings & infrastructure PFC systems

• OEMs building standardized capacitor bank modules

• Retrofits where controlled inrush is critical

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