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PartsTable / COMPONENT / BT400-40-1A
BT400-40-1A ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The HEATER,DUCT TYPE,PORTABLE is a the manufacturer industrial component. Key specifications include depth: 49.000 INCHES NOMINAL IN, phase: THREE, width: 20.000 INCHES NOMINAL IN, height: 26.000 INCHES NOMINAL IN, fuel_type: GASOLINE, current_type: AC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4520-00-223-3221, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BT400-40-1A
NSN: 4520-00-223-3221
FSC: 4520
CAGE: 90598 — ENGINEERED AIR SYSTEMS, INC. DBA DRS SUSTAINMENT SYSTEMS (USA)
SPECIFICATIONS
depth49.000 INCHES NOMINAL IN
phaseTHREE
width20.000 INCHES NOMINAL IN
height26.000 INCHES NOMINAL IN
quantity1
fuel_typeGASOLINE
current_typeAC
mounting_typeTRAILER
air_filter_typeREPLACEABLE PREFORMED
ignition_methodELECTRODE
fuel_feed_methodINTERNAL PUMP
heat_medium_typeAIR
NSN4520-00-223-3221
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEATER,DUCT TYPE,PORTABLE TITLE COMPONENT PN BT400-40-1A MFR HEATER,DUCT TYPE,PORTA
KEY FEATURES
•
SURFACE TREATMENT: PAINT
•
AIR FILTER TYPE: REPLACEABLE PREFORMED
•
RADIO INTERFERENCE SUPPRESSION TYPE: ARMY, MIL-E-53301, RADIO SUPPRESSION
•
WIDTH: 20.000 INCHES NOMINAL IN
•
HEAT OUTLET QUANTITY: 1
•
HEAT DIRECTING DEVICE: FLEXIBLE DUCTS
•
FUEL FEED METHOD: INTERNAL PUMP
•
HEAT DISCHARGE OUTLET TYPE: STATIONARY
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPAINT
AIR FILTER TYPEREPLACEABLE PREFORMED
RADIO INTERFERENCE SUPPRESSION TYPEARMY, MIL-E-53301, RADIO SUPPRESSION
WIDTH20.000 INCHES NOMINAL IN
HEAT OUTLET QUANTITY1
HEAT DIRECTING DEVICEFLEXIBLE DUCTS
FUEL FEED METHODINTERNAL PUMP
HEAT DISCHARGE OUTLET TYPESTATIONARY
FUEL CONSUMPTION RATE PER HOUR4.0 GALLONS
HEAT DELIVERY RATE400000.0 BRITISH THERMAL UNIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
BT400-42-1Interchangeable
interchangeable cross-reference
interchangeable
MILH4607Interchangeable
interchangeable cross-reference
interchangeable
MILH4607USAFTYPEH1CLASS1AND2Interchangeable
interchangeable cross-reference
interchangeable
BT400-40-1Interchangeable
interchangeable cross-reference
interchangeable
PH400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BT400-40-1A?
BT400-40-1A is a HEATER,DUCT TYPE,PORTABLE.
What parts can replace BT400-40-1A?
There are 5 known substitutes for BT400-40-1A: BT400-42-1, MILH4607, MILH4607USAFTYPEH1CLASS1AND2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BT400-40-1A?
BT400-40-1A is cataloged in the Federal Logistics Information System (FLIS) under NSN 4520-00-223-3221. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026