Eaton 100MCSR4313 LV AutoVAR 300 Capacitor Bank - UL Listed
Part Number: 100MCSR4313
Quick Summary
Eaton LV AutoVAR 300 capacitor bank improves power factor in industrial 3-phase networks. Too often, engineers confront slow switching, inrush, and undersized banks that cause voltage swings and energy waste. CSA Certified, UL Listed, UL 508A, and UL 810 compliance support safe panel integration and field reliability. Wall-mounted with NEMA 3R weatherproofing, it offers scalable PF correction with straightforward serviceability. The 100 kVAR rating, 120A at 480V, and 5 x 20 kVAR steps deliver precise reactive power control, enabling energy savings and compliance with IEEE standards. This solution supports maintenance teams and procurement via standardization, approved certifications, and long-term reliability.
Product Information
Extended Description
100MCSR4313 Eaton: Eaton AUTOVAR 300, Automatic Capacitor Banks, 120A, 480V, Three-phase, 100 kVAR, Wall-mounted, 5 x 20, J Frame, Optional molded-case circuit breaker rated 65 kAIC at 480V and 600V, NEMA 3R weatherproofing.
Product Name
Eaton LV AutoVAR 300 capacitor bank
Catalog Number
100MCSR4313
UPC
786685198354
Product Length/Depth
14 in
Product Height
36 in
Product Width
36 in
Product Weight
210 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 UL 508A CSA Std. C22.2 No. 190 UL 810 IEEE Std. 18
Catalog Notes
Other ratings available, please consult factory.
Type
AUTOVAR 300
Amperage Rating
120A
Mounting
Wall
Options
Optional molded-case circuit breaker rated 65 kAIC at 480V and 600V, NEMA 3R weatherproofing.
Phase
Three-phase
Product Category
Automatic Capacitor Banks
Voltage rating
480 V
Frame size
J
Rating
100 kVAR
Step X kVAR
5 x 20 kVAR
Feature → Business Impact → Application: The AutoVAR 300 is a dedicated automatic capacitor bank rated at 100 kVAR with 5 × 20 kVAR stepping. This configuration enables precise reactive power control, reducing kVAR penalties and improving voltage stability across the plant floor. In practice, facilities such as manufacturing lines and processing plants can realize measurable energy savings and improved power quality by dialing in the exact VARs needed for their loads. Feature → Business Impact → Application: It supports a 120A active current at 480V three-phase, allowing rapid correction while staying within distribution limits. The result is faster response to load changes, smoother motor operation, and fewer voltage sags during startup or drive ramping—critical for compressors, pumps, and large motors common in industrial settings. Feature → Business Impact → Application: Wall-mounted, J-frame enclosure with dimensions of 14 in depth, 36 in height, and 36 in width, plus a 210 lb weight, delivers space-efficient installation inside standard electrical rooms or control panels. This simplifies retrofits and new builds alike, offering easier maintenance access and reduced footprint on crowded shop floors. Feature → Business Impact → Application: Optional molded-case circuit breaker rated 65 kAIC at 480V and 600V provides integrated protection for short circuits, improving safety and enabling compliant shutdowns during faults. This compatibility helps panel builders meet electrical codes and accelerates commissioning in automated facilities. Feature → Business Impact → Application: NEMA 3R weatherproofing extends suitability to outdoor or semi-tempered environments, ensuring reliable operation in exposed plant zones or covered outdoor equipment enclosures. This reduces the need for duplicate enclosures and simplifies lifecycle management. Feature → Business Impact → Application: Certifications including CSA Certified, UL Listed, UL 508A, UL 810, and IEEE Std. 18 establish compliance with industry standards, supporting procurement and warranty claims while boosting customer confidence in utility interaction and grid codes. This also aligns with regulated industries such as data centers, food & beverage, and manufacturing.
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FAQs
Installation is streamlined by its wall-mounted design and compact 14 inch depth, with a 36 by 36 inch footprint that fits standard electrical spaces. The 210 lb weight is manageable with common lifting equipment, and the unit ships with clear mounting instructions. The enclosure supports quick wiring within three-phase 480 V circuits and accommodates the optional 65 kAIC MCCB for enhanced fault protection.
The capacitor bank provides 100 kVAR of reactive power with a 120A amperage rating at 480V in a three-phase configuration. It features 5 Ă— 20 kVAR steps for fine-grained power factor correction, ensuring stable voltage and reduced reactive losses across typical plant loads while remaining compatible with IEEE Std. 18 guidelines.
Yes. The 100MCSR4313 carries CSA Certified and UL Listed markings, along with UL 508A and UL 810 compliance. These certifications support safe panel integration, routine maintenance, and regulatory adherence in regulated industries such as manufacturing, data centers, and process facilities.
By providing precise power factor correction through 5 Ă— 20 kVAR steps, the bank reduces reactive current, lowers line losses, and stabilizes voltage under varying load conditions. This lowers utility penalties tied to poor power factor, improves motor efficiency, and supports compliance with grid standards during peak demand periods.
The unit carries a one-year warranty from installation or eighteen months from shipment, whichever occurs first. Optional components such as a molded-case circuit breaker add protection and simplify replacement. Routine inspections and periodic capacitor bank testing are recommended to sustain performance and extend service life in demanding environments.