Eaton 900THFSR432Y AutoVAR filter - UL 508A Certification
Part Number: 900THFSR432Y
Quick Summary
Eaton LV AutoVAR filter provides reactive power correction for large industrial motor loads. This solution helps facility teams address rising energy costs and voltage sags that can impact uptime and motor life. It carries UL 508A, CSA C22.2 No. 190, and UL 810 certifications, underscoring safety, electrical integrity, and surge tolerance in demanding environments. For plants running three-phase 480 V systems at 60 Hz, the floor-mounted design delivers reliable tuning and straightforward installation, with maintenance considerations that minimize downtime. The product also supports scalable, long-term energy efficiency strategies and aligns with modern automation architectures, making it a practical asset for critical manufacturing applications and retrofit projects.
Product Information
Extended Description
900THFSR432Y Eaton: Eaton floor mounted, 480V, 900 kvar, 4.2H, 60 Hz
Product Name
Eaton LV AutoVAR filter
Catalog Number
900THFSR432Y
UPC
786680190742
Product Length/Depth
172.8 in
Product Height
80 in
Product Width
25 in
Product Weight
3700 lb
Certifications
UL 508A CSA Std. C22.2 No. 190 UL 810 IEEE Std. 18
Frequency rating
60 Hz
Mounting
Floor
Phase
Three-phase
Tuning
4.2H
Voltage rating
480 V
Enclosure
NEMA 1
Enclosure size
KK + KK
Rating
900
Step X kVAR
9 x 100 kVAR
Feature: The 900 kvar tuning with a 4.2H reactor enables precise reactive power control across varied load profiles. This means that as motor loads ramp or coast, the AutoVAR filter maintains a stable power factor, reducing reactive currents and associated losses. In practice, operators see smoother voltage regulation on critical feeders and longer motor life when nonproductive VARs are minimized. This is especially valuable in conveyors, pumps, and large fans where load dynamics change rapidly. Business impact: Improved energy efficiency and reduced maintenance costs translate to lower operating expenses and more predictable plant performance. Application: Ideal for high-demand, variable-load equipment in manufacturing lines and process industries that require dependable power quality without oversizing equipment.
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FAQs
Plan floor space for a floor-mounted unit measuring 172.8 in in length, 80 in in height, and 25 in in width with an approximate 3700 lb weight. Ensure indoor, dry location access to 480 V three-phase 60 Hz power and space for safe cable routing, proper mounting, and service clearance. Confirm compatibility with existing control panels and provide forklift or crane access for installation.
The device operates at 480 V, 60 Hz in a three-phase configuration, with a tuning of 4.2H and a rated 900 kvar, arranged as 9 x 100 kvar steps. This enables scalable reactive power compensation to match load changes, stabilizing voltage and improving overall power factor across variable motor and process loads.
Yes. The filter is certified to UL 508A for industrial control panels, CSA Std. C22.2 No. 190, UL 810 for electrical safety and surge tolerance, and aligns with IEEE Std. 18 requirements. These certifications help streamline procurement, regulatory compliance, and audit readiness for plant electrical systems.
Expect improved power factor and reduced reactive currents, leading to lower utility penalties and energy bills. The 900 kvar, 9 x 100 kvar steps design supports load-driven tuning, enabling energy savings without over-sizing equipment. ROI is highly load-dependent, but plants with variable motor drives and high reactive demand typically see meaningful payback over time.
The floor-mounted unit uses a robust NEMA 1 enclosure and accessible service interfaces to simplify routine inspection and replacement tasks. Compatibility with 480 V three-phase systems at 60 Hz and integration with Eaton’s power management ecosystem facilitate predictable maintenance planning, while certified construction reduces commissioning risk and supports long-term reliability.