PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H25Heater,thermal Release

Siemens Energy and Automation Inc Siemens Furnas Controls Div · NSN 5999-00-761-8703 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-761-8703 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-761-8703. Primary manufacturer part number: H25.
Features
  • Heater,thermal Release — FSC 5999
  • 3 verified cross-references
  • Primary manufacturer: Siemens Energy and Automation Inc Siemens Furnas Controls Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-761-8703, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameHeater,thermal Release
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersLeroi International Inc Dba Compair Leroi (CAGE 1XBP3); Siemens Energy and Automation Inc Siemens Furnas Controls Div (CAGE 23826); Compair Kellogg Div of Robertshaw Controls Co (CAGE 53239)
Successor NSN5999-01-374-7999 — Heater,thermal Release
Technical Specifications
ParameterValue
NSN5999-00-761-8703
Primary Part NumberH25
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSiemens Energy and Automation Inc Siemens Furnas Controls Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Weight0.0150 lbs
Cube0.0013 cu ft
Verified Substitutes 12
5999-01-374-7999D-WK-756-20 ITEM 6 SUCCESSOR
Heater,thermal Release
Walz & Krenzer Inc Div Mapeco Products
5120-00-278-03255120-00-278-0325 INTERCHANGEABLE
Screw Starter,hand
General Services Administration Federal Supply Service
5950-00-442-1199149060-01 INTERCHANGEABLE
Transformer,power
Ge Aviation Systems Llc
5340-00-533-6946 INTERCHANGEABLE
Strap,retaining
5985-00-581-7756A-174-4 INTERCHANGEABLE
Support,waveguide
Burke Products Inc
5950-00-834-246443001099-000 INTERCHANGEABLE
Transformer,audio Frequency
Dne Technologies, Inc
4730-00-868-51928C3-4 INTERCHANGEABLE
Trap,steam
Itt Fluid Technology Corp Itt Mcdonnell and Miller
5977-00-880-1537H25 INTERCHANGEABLE
Holder,electrical Contact Brush
Arriflex Corp
5905-00-957-1998 INTERCHANGEABLE
Plate,mounting
4940-01-073-4853H25C-1N-6-N-E-P3 INTERCHANGEABLE
Leak Detector,refrigerant Gas
Bacharach, Inc.
Cross-Reference Index
Part NumberManufacturer
43776 Leroi International Inc Dba Compair Leroi (USA)
H25 PRIMARY Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA)
43776 Compair Kellogg Div of Robertshaw Controls Co (USA)
Related Parts
5999-01-374-7999SUCCESSOR
HEATER,THERMAL RELEASE
D-WK-756-20 ITEM 6
5120-00-278-0325INTERCHANGEABLE
SCREW STARTER,HAND
5120-00-278-0325
5950-00-442-1199INTERCHANGEABLE
TRANSFORMER,POWER
149060-01
5340-00-533-6946INTERCHANGEABLE
STRAP,RETAINING
5985-00-581-7756INTERCHANGEABLE
SUPPORT,WAVEGUIDE
A-174-4
5950-00-834-2464INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
43001099-000
4730-00-868-5192INTERCHANGEABLE
TRAP,STEAM
8C3-4
5977-00-880-1537INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
H25
5905-00-957-1998INTERCHANGEABLE
PLATE,MOUNTING
4940-01-073-4853INTERCHANGEABLE
LEAK DETECTOR,REFRIGERANT GAS
H25C-1N-6-N-E-P3
5950-01-104-4443INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
8105-01-122-7394INTERCHANGEABLE
BAG,PLASTIC
H-25

Frequently Asked Questions

What is NSN 5999-00-761-8703?

NSN 5999-00-761-8703 is a Heater,thermal Release, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-761-8703?

NSN 5999-00-761-8703 has 3 cross-referenced part numbers: 43776 (Leroi International Inc Dba Compair Leroi), H25 (Siemens Energy and Automation Inc Siemens Furnas Controls Div), 43776 (Compair Kellogg Div of Robertshaw Controls Co).

What NSN replaces 5999-00-761-8703?

There are 12 known substitutes for 5999-00-761-8703: 5999-01-374-7999, 5120-00-278-0325, 5950-00-442-1199 and 9 more. Verify interchangeability with system specifications before substitution.

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