Eaton 523PMURF LV Unipak capacitor bank - CSA Certified UL Listed
Part Number: 523PMURF
Quick Summary
Eaton LV Unipak capacitor bank is a low-voltage, three-phase solution designed to improve power factor in industrial and commercial electrical systems. Operators and engineers often contend with motor stalls, utility penalties, and wasted energy due to reactive power. This unit carries CSA Certified and UL Listed marks for safety and reliability, and it uses NEMA 1/NEMA 3R enclosures to suit indoor and outdoor installations. For procurement, the A2 frame, 12A rating, and 5 kVAR rating translate to predictable sizing, while the 240V specification and the catalog note for 208V adjustments help with site variations. The design supports reliable power-factor correction within existing switchgear and distribution panels, offering measurable energy- and cost-saving benefits.
Product Information
Extended Description
523PMURF Eaton: Eaton LV Unipak capacitor bank, UNIPAK, Low Voltage Fixed Capacitor Banks, 12A, 240V, Three-phase, 5 kVAR, Protected, Neon red blown-fuse indicating lights, Three slottedblade-type fuses, A2 Frame
Product Name
Eaton LV Unipak capacitor bank
Catalog Number
523PMURF
UPC
782116058266
Product Length/Depth
5.954 in
Product Height
22.3 in
Product Width
8.5 in
Product Weight
29 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
CSA Certified UL Listed
Catalog Notes
Multiply the 240V kVAR rating by 0.75 to calculate the kVAR value at 208V.
Type
UNIPAK
Amperage Rating
12A
Fuse type
Three slottedblade type fuses with 200,000 ampere interrupting capacity
Phase
Three-phase
Product Category
Low Voltage Fixed Capacitor Banks
Voltage rating
240V
Enclosure
NEMA 1, NEMA 3R
Enclosure material
14 gauge steel finished with durable powder coat finish
Frame size
A2
Indicators
Red, neon blown-fuse indicating lights are protected by transparent weatherproof guard
Protection
Three fuses, three lights
Rating
5 kVAR
Feature: UNIPAK three-phase fixed capacitor bank with 5 kVAR at 240V and a 12A amperage rating. Benefit: Delivers predictable reactive-power correction with compact footprint, enabling reliable power-factor improvement in motor loads and HVAC systems. Application: Suitable for control panels and industrial bus sections where space is at a premium and PF penalties matter. Feature: Three slottedblade-type fuses with 200,000 AIC and neon blown-fuse indicators protected by a weatherproof guard. Benefit: Quick, safe fault isolation reduces downtime and simplifies maintenance planning in harsh plant environments. Application: Useful in outdoor or rugged indoor installations where visible fault indication accelerates service actions. Feature: Enclosure options including NEMA 1 and NEMA 3R with 14 gauge steel finished in a durable powder coat. Benefit: Robust, corrosion-resistant enclosure supports long service life and easy mounting in varied environments. Application: Indoor walk-in panels or outdoor sites requiring weather resistance. Feature: Frame size A2 and a compact UNIPAK design with clear status indicators. Benefit: Easy integration with existing low-voltage power distribution while delivering clear operating status to technicians. Application: Matrixed panel assemblies and retrofit projects where space and visibility matter. Feature: Catalog notes specify 240V kVAR rating can be multiplied by 0.75 to estimate the kVAR value at 208V. Benefit: Enables accurate sizing for sites with 208V systems, reducing over- or under-sizing risk. Application: Design and procurement for mixed-voltage facilities and utility coordination.
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FAQs
Yes. The unit is a three-phase, 240V fixed capacitor bank sized for 12A with a 5 kVAR rating, designed to drop into common low-voltage panel layouts. It uses a compact A2 frame, three-slotted blade fuses, and NEMA 1/NEMA 3R enclosures to align with standard distribution hardware. Ensure panel clearance, wiring terminations, and fuse accessibility meet local codes during installation.
This bank is intended for power-factor correction in industrial and commercial applications, including HVAC drives, motors, and lighting circuits. With 5 kVAR at 240V, it reduces reactive power, improving efficiency and lowering utility demand charges. For 208V systems, use the catalog note to estimate kVAR by multiplying the 240V rating by 0.75.
The 523PMURF is CSA Certified and UL Listed, ensuring conformity to recognized safety and performance standards. These certifications facilitate supplier qualification, help meet procurement requirements, and support regulatory compliance in many industrial facilities, reducing risk during audits and inspections.
Maintenance focuses on monitoring the three fuses and neon indicators, ensuring the weatherproof guard remains intact, and verifying enclosure integrity. Regular checks verify that the fuses are intact and the indicator lights accurately reflect status, enabling rapid fault detection and minimizing unplanned downtime in harsh environments.
Use the catalog note: multiply the 240V kVAR rating by 0.75 to estimate the kVAR at 208V. For a 5 kVAR unit, the 208V kVAR value is approximately 3.75 kVAR. This simple rule helps in accurate capacitor sizing when your site operates at 208V rather than 240V.