PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MT-345A 480 3 4.5Heating Element,electrical,immer

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 4520-01-180-1730 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-180-1730 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-180-1730. Primary manufacturer part number: MT-345A 480 3 4.5.
Features
  • Heating Element,electrical,immer — FSC 4520
  • Maximum Wattage Rating in Watts: 4500.0 SINGLE VOLTAGE
  • Thread Series Designator: NPT MOUNTING FACILITY
  • Heat Quantity: 1
  • Voltage in Volts and Current Type: 480.0 AC SINGLE VOLTAGE
  • Element Quantity: 1
  • Material: COPPER SHEATH
  • Frequency in Hertz: 60.0
Applications
  • Applications requiring Copper Sheath construction
General Description

The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-180-1730, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-180-1730
Primary Part NumberMT-345A 480 3 4.5
Item NameHeating Element,electrical,immer
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Maximum Wattage Rating in Watts4500.0 SINGLE VOLTAGE
Thread Series DesignatorNPT MOUNTING FACILITY
Heat Quantity1
Voltage in Volts and Current Type480.0 AC SINGLE VOLTAGE
Element Quantity1
MaterialCOPPER SHEATH
Frequency in Hertz60.0
Length11.375 INCHES NOMINAL IN
Thread Quantity8.0 PER INCH MOUNTING FACILITY
Watt Density Rating44.0 PER SQUARE INCH SINGLE VOLTAGE
Nominal Thread Size2.500 INCHES MOUNTING FACILITY IN
PhaseTHREE SINGLE VOLTAGE
Element Connection StyleTERMINAL SCREW
Body StyleTUBULAR, SCREW TYPE
Element Radiation SpectrumNONINFRARED
Mounting Method StyleSCREW PLUG OR BUSHING TYPE MOUNTING FACILITY
Terminal Quantity4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4140-00-236-07304140002360730 INTERCHANGEABLE
Fan,tubeaxial
Rotron Incorporated
5342-00-413-7596191564 INTERCHANGEABLE
Strike
Lockheed Martin Corporation Div Rms - Mitchel Field
Cross-Reference Index
Part NumberManufacturer
MT-345A 480 3 4.5 PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
714LU1276 PRIMARY Indeeco Llc Dba Indeeco (USA)
191564 PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
Related Parts
4140-00-236-0730INTERCHANGEABLE
FAN,TUBEAXIAL
4140002360730
5342-00-413-7596INTERCHANGEABLE
STRIKE
191564

Frequently Asked Questions

What is NSN 4520-01-180-1730?

NSN 4520-01-180-1730 is a Heating Element,electrical,immer, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-180-1730?

NSN 4520-01-180-1730 has 3 cross-referenced part numbers: MT-345A 480 3 4.5 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 714LU1276 (Indeeco Llc Dba Indeeco), 191564 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).

What NSN replaces 4520-01-180-1730?

There are 2 known substitutes for 4520-01-180-1730: 4140-00-236-0730, 5342-00-413-7596. Verify interchangeability with system specifications before substitution.

What are the specifications of MT-345A 480 3 4.5?

Key specifications for MT-345A 480 3 4.5: Overall Length: 16.813 INCHES NOMINAL IN; Maximum Wattage Rating in Watts: 4500.0 SINGLE VOLTAGE; Thread Series Designator: NPT MOUNTING FACILITY; Heat Quantity: 1. 18 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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