Eaton 643PMURN Unipak Capacitor Bank - UL Listed
Part Number: 643PMURN
Quick Summary
643PMURN is an Eaton LV Unipak capacitor bank for three-phase low-voltage power factor correction in industrial systems. Many facilities struggle with energy waste from poor power factor and voltage sags that disrupt motors and controls. It carries UL Listed and CSA Certified approvals, with a 14 ga. steel frame finished in a durable powder coat and enclosures rated for indoor or outdoor use (NEMA 1, NEMA 3R). This unit is designed for easy installation and long-term reliability, supported by Eaton’s warranty policy. By selecting this fixed capacitor bank, you can improve energy efficiency, reduce utility penalties, and simplify maintenance while meeting industry standards. The solution also pairs well with existing switchgear and retrofit projects, delivering measurable business value.
Product Information
Extended Description
643PMURN Eaton: Eaton LV Unipak capacitor bank, UNIPAK, Low Voltage Fixed Capacitor Banks, 7.2A, 480V, Three-phase, 6 kVAR, Unprotected, Non-fused, 14 ga. steel finished with durable powder coat finish, A1 Frame
Product Name
Eaton LV Unipak capacitor bank
Catalog Number
643PMURN
UPC
782116075713
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
7.20A
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
Protection
Non-fused
Rating
6 kVAR
Eaton Specification Sheet - 643PMURN
Selling Policy 25-000 - Distribution and Control Products and Services
Feature UNIPAK fixed capacitor bank with 6 kVAR, 480 V three-phase, 7.20 A, non-fused protection. Business Impact This combination provides reliable reactive power support to raise power factor, reduce energy losses, and help avoid utility penalties. Application Use this in industrial plants with motors and drives to optimize overall efficiency and ensure compliant electrical systems. Feature Durable 14 gauge steel enclosure finished with powder coat; NEMA 1, NEMA 3R. Business Impact Enables indoor and outdoor installations with corrosion resistance and long service life, reducing replacement costs. Application Suitable for manufacturing floors, process plants, and data centers needing robust mechanical protection. Feature Lightweight, A1 frame size with 19 lb weight for quick retrofit. Business Impact Speeds installation, lowers labor costs, and simplifies module replacement in existing electrical layouts. Application Ideal for retrofit projects and space-constrained panels. Feature Warranty and Certifications: UL Listed, CSA Certified; Eaton policy 25-000. Business Impact Provides safety, regulatory compliance, and post-sale support, boosting procurement confidence. Application Supports audited maintenance plans and reliable long-term operation. Feature Catalog Notes: 240V kVAR rating is multiplied by 0.75 to estimate kVAR at 208V. Business Impact Ensures correct sizing for alternate low-voltage supplies, avoiding under- or over-sizing. Application Critical for plants converting from 240 to 208 V distributions.
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FAQs
Yes. The 643PMURN is designed for 480 V three-phase systems and delivers 6 kVAR with a 7.20 A rating. It uses the UNIPAK construction in a 14 gauge steel frame, with optional NEMA 1 or NEMA 3R enclosures, making it straightforward to retrofit alongside existing switchgear and bus assemblies.
The unit provides 6 kVAR of reactive power at 480 V in a three-phase configuration, rated for 7.20 A. It is a non-fused fixed capacitor bank (UNIPAK) with frame size A1 and a 14 gauge steel enclosure, suitable for both indoor and certain outdoor applications as defined by enclosure ratings.
Industries with significant motor and drive loads, such as manufacturing, process facilities, and data centers, benefit from reduced energy costs and penalties through improved power factor. The unit supports retrofit projects and new installations where reliable PF correction is critical to efficiency and equipment longevity.
The 643PMURN is UL Listed and CSA Certified, ensuring electrical safety and compliance. Enclosures are rated NEMA 1 for indoor use and NEMA 3R for outdoor/mplash-prone environments, with a durable 14 gauge steel frame finished in a powder coat for added protection.
Maintenance is minimal due to its non-fused, fixed-capacitor design. The warranty covers one year from installation or 18 months from shipment. ROI comes from energy savings from power factor correction and avoidance of utility penalties, with a straightforward installation that reduces ongoing operating costs.