PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

501Test Set,insulation Breakdown

Simpson Electric Company, Inc. · NSN 6625-01-045-6125 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-045-6125 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-045-6125. Primary manufacturer part number: 501.
Features
  • Test Set,insulation Breakdown — FSC 6625
  • Supplementary Features: SIX BATTERIES REQ'D
  • Features Provided: INTERNAL BATTERY ACCOMMODATION
  • DC Voltage Rating: 1.5 VOLTS NOMINAL
  • Supplementary Features: SIX BATTERIES REQ'D
  • Features Provided: INTERNAL BATTERY ACCOMMODATION
  • DC Voltage Rating: 1.5 VOLTS NOMINAL
  • 2 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Test Set,insulation Breakdown, cataloged under National Stock Number 6625-01-045-6125, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Simpson Electric Company, Inc.. Government technical data includes 6 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-045-6125
Primary Part Number501
Item NameTest Set,insulation Breakdown
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSimpson Electric Company, Inc.
StatusACTIVE
Supplementary FeaturesSIX BATTERIES REQ'D
Features ProvidedINTERNAL BATTERY ACCOMMODATION
DC Voltage Rating1.5 VOLTS NOMINAL
Supplementary FeaturesSIX BATTERIES REQ'D
Features ProvidedINTERNAL BATTERY ACCOMMODATION
DC Voltage Rating1.5 VOLTS NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeU
Unit of IssueEA
SMR CodeXU
Weight141.0000 lbs
Cube16.3625 cu ft
Verified Substitutes 10
Voltmeter
Ohmmeter
6625-01-032-0223501 SUCCESSOR
Meter,special Scale
Anritsu Company
6625-00-188-3891 INTERCHANGEABLE
Generator,signal
6625-00-643-2640M-1929A INTERCHANGEABLE
Ammeter
Custom Metering Company Inc
6625-01-010-4290501 INTERCHANGEABLE
Window-Meter
Q V S Inc
6625-01-024-7721501 INTERCHANGEABLE
Tester,calibrator
Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution
5999-01-345-8557 INTERCHANGEABLE
Heat Sink,electrical-Electronic
5895-01-367-4962 INTERCHANGEABLE
Mixer Stage,frequency
6625-01-373-6738501 INTERCHANGEABLE
Drawer Extension,sp
Keytek Instrument Corp
Cross-Reference Index
Part NumberManufacturer
401 Simpson Electric Company, Inc. (USA)
501 PRIMARY Simpson Electric Company, Inc. (USA)
Related Parts
6625-00-555-2315SUCCESSOR
VOLTMETER
6625-00-982-3926SUCCESSOR
OHMMETER
6625-01-032-0223SUCCESSOR
METER,SPECIAL SCALE
501
6625-00-188-3891INTERCHANGEABLE
GENERATOR,SIGNAL
6625-00-643-2640INTERCHANGEABLE
AMMETER
M-1929A
6625-01-010-4290INTERCHANGEABLE
WINDOW-METER
501
6625-01-024-7721INTERCHANGEABLE
TESTER,CALIBRATOR
501
5999-01-345-8557INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
5895-01-367-4962INTERCHANGEABLE
MIXER STAGE,FREQUENCY
6625-01-373-6738INTERCHANGEABLE
DRAWER EXTENSION,SP
501

Frequently Asked Questions

What is NSN 6625-01-045-6125?

NSN 6625-01-045-6125 is a Test Set,insulation Breakdown, manufactured by Simpson Electric Company, Inc., classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-045-6125?

NSN 6625-01-045-6125 has 2 cross-referenced part numbers: 401 (Simpson Electric Company, Inc.), 501 (Simpson Electric Company, Inc.).

What NSN replaces 6625-01-045-6125?

There are 10 known substitutes for 6625-01-045-6125: 6625-00-555-2315, 6625-00-982-3926, 6625-01-032-0223 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 501?

Key specifications for 501: Supplementary Features: SIX BATTERIES REQ'D; Features Provided: INTERNAL BATTERY ACCOMMODATION; DC Voltage Rating: 1.5 VOLTS NOMINAL; End Item Identification: B52 A/R P.T.T. 8 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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