Eaton 543PMURF LV Unipak Capacitor Bank - UL Listed
Part Number: 543PMURF
Quick Summary
The Eaton 543PMURF LV Unipak capacitor bank provides compact, three-phase power factor correction for industrial motors. If reactive power is unmanaged, you may see higher energy costs, nuisance tripping, and unstable voltages during peak loads. UL Listed and CSA Certified safety marks accompany a rugged A1 frame housed in a NEMA 1, NEMA 3R enclosure, suitable for indoor or outdoor use. Designed for low voltage fixed capacitor banks, it pairs with standard switchgear and supports cost-effective retrofits while lowering utility penalties. The 5 kVAR rating at 480 V makes it a practical choice for mid-size service panels and equipment rooms. Its three fuses and neon-indicator lights enable quick fault diagnosis and safer maintenance.
Product Information
Extended Description
543PMURF Eaton: Eaton LV Unipak capacitor bank, UNIPAK, Low Voltage Fixed Capacitor Banks, 6A, 480V, Three-phase, 5 kVAR, Protected, Neon red blown-fuse indicating lights, Three midget-type fuses, A1 Frame
Product Name
Eaton LV Unipak capacitor bank
Catalog Number
543PMURF
UPC
782116058594
Product Length/Depth
5.254 in
Product Height
17.3 in
Product Width
8.5 in
Product Weight
19 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
UL Listed CSA Certified
Catalog Notes
Multiply the 240V kVAR rating by 0.75 to calculate the kVAR value at 208V.
Type
UNIPAK
Amperage Rating
6A
Fuse type
Three midget-type fuses with 100,000 ampere interrupting capacity
Phase
Three-phase
Product Category
Low Voltage Fixed Capacitor Banks
Voltage rating
480 V
Enclosure
NEMA 1, NEMA 3R
Enclosure material
14 gauge steel finished with durable powder coat finish
Frame size
A1
Indicators
Red, neon blown-fuse indicating lights are protected by transparent weatherproof guard
Protection
Three fuses, three lights
Rating
5 kVAR
The UNIPAK design delivers a compact fixed-capacitor solution for low-voltage PF correction in three-phase systems. This reduces reactive power, lowers energy bills, and stabilizes voltage under peak loads. Applications include motors, drives, and other heavy inductive loads in manufacturing facilities. The rugged enclosure uses 14-gauge steel with a durable powder coat, with a NEMA 1/NEMA 3R rating, enabling indoor or outdoor installation and reducing corrosion-related downtime. Three fuses with 100,000 AIC and neon indicator lights provide clear fault signals and fast response during maintenance, improving overall system safety. The A1 frame plus a compact footprint (5.254 in depth, 8.5 in width, 17.3 in height) supports straightforward retrofit into existing panels or new installations. Certification, warranty, and catalog notes streamline procurement and lifecycle planning for compliance-driven projects.
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FAQs
Install the UNIPAK unit in a suitable indoor or outdoor space using the NEMA 1 or NEMA 3R enclosure options. The A1 frame and compact footprint (5.254 in depth, 8.5 in width, 17.3 in height) simplify mounting in switchgear rooms or panel boards. Use the three midget-type fuses with 100,000 AIC for protection.
The 5 kVAR rating is specified for the unit’s standard low-voltage configuration. The catalog notes indicate that to estimate kVAR at different voltages, the 240 V rating should be multiplied by 0.75 to approximate the 208 V value, which helps in planning PF correction for voltage variations in plant networks.
Yes. The UNIPAK design, compact A1 frame, and NEMA-rated enclosure support retrofit into existing switchgear or service panels. With a 480 V three-phase supply and a 5 kVAR rating, it aligns with many mid-size motor and drive applications, while the robust fusing and indicator lights aid safe integration and ongoing maintenance.
The 543PMURF is UL Listed and CSA Certified, confirming compliance with key electrical safety standards. Its NEMA 1/NEMA 3R enclosure supports indoor and outdoor installations, and the red neon indicators provide clear fault visibility while maintaining enclosure protection for reliable operation in industrial environments.
Eaton provides a one-year warranty from installation or eighteen months from shipment (whichever occurs first). Routine maintenance includes periodic fuse inspection/replacement, neon indicator checks, and enclosure inspection for corrosion. The predictable maintenance, combined with energy savings from PF correction, supports a favorable ROI over the system lifecycle.