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COMAIR ROTRON – MAJOR – MR2B3 – UPS Fan – Tested

Manufacturer

OEM Part Number

028245

GPS Part Number

28-COM-028245

Categories

Price:

$150.00

Specifications
View Spec Sheet
Voltage AH/kVA Length Width Height Weight
24 V N/A 6.8" 5.9" 2.0" 2 lbs
Voltage 24 V
Amp/H N/A
Length 6.8"
Width 5.9"
Height 2.0"
Weight 2 lbs

UPS Cooling โ€” COMAIR ROTRON Major Fan (MR2B3, P/N 028245)
This is the Tested Version Fan

Heavy-duty AC axial fan from COMAIR ROTRON, Major series, model MR2B3, sold under assembly part number 028245. Commonly used as a system fan in UPS cabinets and industrial power equipment that require a 172ย mm 115ย VAC tubeaxial fan.

This Major-series fan is designed for continuous duty in power electronics, providing strong airflow and static pressure to keep transformers, rectifiers, and switching hardware within their safe operating temperature range.

Mechanical format follows the standard 172 ร— 150 ร— 51ย mm (approx. 6.8 ร— 5.9 ร— 2.0ย in) AC tubeaxial footprint, making it a direct replacement where COMAIR ROTRON MR2B3 / 028245 / 19028245A is called out in UPS or industrial control-panel equipment.

Product Options โ€” Brand New vs. Tested Fans
Option Description Warranty
Brand New Brand-new genuine COMAIR ROTRON Major MR2B3 fan (assembly P/N 028245, fan P/N 19028245A) โ€” factory-fresh or new-old-stock; supplied as an OEM-grade UPS system fan.
1-Year
Tested Operationally verified pull from a functioning UPS; rotation, noise level, and current draw checked; fan cleaned and terminals inspected for reliable reuse.
90-Day
Specifications
Part # Dimensions Voltage Airflow Connector Application
Major MR2B3 โ€” 028245 / 19028245A 171.4 ร— 150.4 ร— 50.8 mm (โ‰ˆ 6.8 ร— 5.9 ร— 2.0 in) 115 V AC, 50/60 Hz, โ‰ˆ 0.27 A โ‰ˆ 235 CFM (Major 172 mm AC axial class) 2 terminals (ball-bearing AC fan) UPS / industrial control-panel system fan
Compatibility
Part # Compatible Models Notes
MR2B3 โ€” 028245 UPS and industrial power systems specifying COMAIR ROTRON Major MR2B3, assembly P/N 028245 or fan P/N 19028245A Verify by exact P/N, frame size, 115 V AC rating, airflow, and mounting / terminal style before substituting in an OEM assembly.
Why buy from Gruber
  • Professionally reviewed โ€” Major-series AC fans are tested in our lab for rotation, noise, and current draw at rated voltage.
  • Ready to install โ€” Pre-cleaned and inspected, with terminals checked for solid connections in UPS fan trays and panels.
  • Guaranteed quality โ€” Backed by our UPS service experience and stated warranty period on brand-new and tested hardware.
Gruber Power Services