Eaton 300TPHSR431MW Capacitor Bank – UL Listed 3R Enclosure
Part Number: 300TPHSR431MW
Quick Summary
Eaton 300TPHSR431MW capacitor bank provides power factor correction for large three-phase 480 V systems. This solution helps facilities reduce utility penalties and energy costs associated with poor PF, voltage drop, and inrush events. The unit is UL Listed, CSA Certified, and designed to meet UL 508A and IEEE Std. 18 requirements, offering reliability across industrial installations. By integrating heavy-duty capacitor cells in a rugged NEMA 3R enclosure, it ensures long service life in demanding environments. For procurement teams, this translates to predictable performance, easier maintenance planning, and scalable PF correction for growing loads, with compatibility to Eaton AutoVAR 600 configurations.
Product Information
Extended Description
300TPHSR431MW Eaton: Eaton AutoVAR 600 Capacitor Bank, 361A, 60 Hz, Three-phase, 480V, Main breaker and fuses, Heavy duty capacitor cells, NEMA 3R enclosure, Power Factor Correction, 6 x 50 kvar, 300 kVAR
Product Name
Eaton LV AutoVAR 600 capacitor bank
Catalog Number
300TPHSR431MW
UPC
786685924571
Product Length/Depth
25 in
Product Height
80 in
Product Width
41.3 in
Product Weight
850 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 UL 508A CSA Std. C22.2 No. 190 UL 810 IEEE Std. 18
Type
Power Factor Correction
Amperage Rating
361A
Frequency rating
60 Hz
Options
Heavy duty capacitor cells, NEMA 3R enclosure
Phase
Three-phase
Voltage rating
480 V
kVA rating
300 KVR
Protection
Main breaker and fuses
Step X kVAR
6 x 50 kVAR
Feature → Business Impact → Application: The 361 A amperage rating supports robust power factor correction for demanding loads, reducing reactive power and improving voltage stability across the facility. This translates to lower utility penalties and improved equipment efficiency, particularly in manufacturing lines with variable or peak demand, such as stamping presses or motor drives. Feature → Business Impact → Application: Six 50 kvar steps (6 x 50 kvar) offer modular PF correction, enabling precise tuning to changing process loads without overcorrection, minimizing capacitor wear and extension of service life. Feature → Business Impact → Application: Three-phase 480 V operation aligns with common industrial distributions, enabling straightforward integration into existing switchgear and panelboards, reducing retrofit time and commissioning risk. Feature → Business Impact → Application: Built-in main breaker and fuses provide immediate protection against faults, lowering downtime and simplifying maintenance planning during testing or routine servicing. Feature → Business Impact → Application: NEMA 3R enclosure and heavy-duty capacitor cells deliver weather resilience and long-term reliability in outdoor or harsh indoor environments, supporting outdoor substations and rugged facilities without enclosure upgrades.
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FAQs
Installation is designed to fit standard low-voltage switchgear for three-phase 480 V systems. It uses a NEMA 3R enclosure suitable for indoor or outdoor mounting, with a built-in main breaker and fuses for protection. Ensure adequate cleared space, proper labeling, and alignment with the existing Eaton AutoVAR 600 configurations to simplify commissioning and future upgrades.
Key specs include 361 A amperage rating, 60 Hz frequency, 480 V voltage rating, three-phase configuration, and a kVAR rating of 300 with six 50 kvar steps. The unit is designed for power factor correction with a 6 x 50 kvar step structure and includes a main breaker and fuses for protection.
Yes. The 300TPHSR431MW is a low-voltage AutoVAR 600 capacitor bank built for 480 V, three-phase systems, enabling effective PF correction in typical industrial environments. It integrates with standard Eaton power factor correction strategies and can be coordinated with other AutoVAR components for scalable PF management.
The unit carries UL Listed and CSA Certified marks, with compliance to UL 508A, UL 810, CSA Std. C22.2 No. 190, and IEEE Std. 18. These certifications support safe operation, electrical reliability, and regulatory acceptance across North American facilities.
By improving power factor and stabilizing voltage, the 300TPHSR431MW helps reduce utility penalties and energy losses, delivering measurable cost savings over time. Its heavy-duty cells and robust enclosure minimize maintenance needs, while the integrated protection reduces downtime during servicing and replacements, supporting predictable TCO for facilities with growing or fluctuating loads.