PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

UHSA126W2CDAFUnit Heater,air Circulating,stea

Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters · NSN 4520-00-257-5228 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-257-5228 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-257-5228. Primary manufacturer part number: UHSA126W2CDAF.
Features
  • Unit Heater,air Circulating,stea — FSC 4520
  • Current Type: AC
  • Heat Medium Type: HOT WATER
  • Maximum Pressure Limit: 400.0 POUNDS PER SQUARE INCH GAGE LBS
  • Heating Element Type: STEAM COIL
  • Voltage in Volts: 115.0
  • Circulated Air Type: HEATED
  • Speed Adjustments: SINGLE SPEED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Unit Heater,air Circulating,stea, cataloged under National Stock Number 4520-00-257-5228, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-00-257-5228
Primary Part NumberUHSA126W2CDAF
Item NameUnit Heater,air Circulating,stea
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerTrane U.s. Inc. Dba the Trane Co Div Trane Headquarters
StatusACTIVE
Current TypeAC
Heat Medium TypeHOT WATER
Maximum Pressure Limit400.0 POUNDS PER SQUARE INCH GAGE LBS
Heating Element TypeSTEAM COIL
Voltage in Volts115.0
Circulated Air TypeHEATED
Speed AdjustmentsSINGLE SPEED
Depth22.000 INCHES NOMINAL IN
Heat Outlet Quantity1
Heat Discharge Outlet TypeADJUSTABLE
Heat Delivery DirectionHORIZONTAL
Air Circulation DevicePROPELLER FAN
Frequency in Hertz60.0
Heat Directing DeviceADJUSTABLE LOUVER
Mounting TypeCEILING SUSPENDED
Quantity1
Operating Control TypeTHERMOSTATIC
PhaseSINGLE
Prime Mover TypeELECTRIC MOTOR
Heat Delivery Rate120000.0 BRITISH THERMAL UNIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5930-00-258-9991NP11304PC126S INTERCHANGEABLE
Switch,rotary
Sterling Engine Co Inc
3110-00-540-4668202554-30 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
5940-01-451-7818 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
UHSA126W2CDAF PRIMARY Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
126S Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
Related Parts
5930-00-258-9991INTERCHANGEABLE
SWITCH,ROTARY
NP11304PC126S
3110-00-540-4668INTERCHANGEABLE
BEARING,BALL,ANNULAR
202554-30
5940-01-451-7818INTERCHANGEABLE
TERMINAL,LUG

Frequently Asked Questions

What is NSN 4520-00-257-5228?

NSN 4520-00-257-5228 is a Unit Heater,air Circulating,stea, manufactured by Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-257-5228?

NSN 4520-00-257-5228 has 2 cross-referenced part numbers: UHSA126W2CDAF (Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters), 126S (Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters).

What NSN replaces 4520-00-257-5228?

There are 3 known substitutes for 4520-00-257-5228: 5930-00-258-9991, 3110-00-540-4668, 5940-01-451-7818. Verify interchangeability with system specifications before substitution.

What are the specifications of UHSA126W2CDAF?

Key specifications for UHSA126W2CDAF: Current Type: AC; Heat Medium Type: HOT WATER; Maximum Pressure Limit: 400.0 POUNDS PER SQUARE INCH GAGE LBS; Heating Element Type: STEAM COIL. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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