PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MD-1Test Set,insulation Breakdown

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-575-4625 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-575-4625 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-575-4625. Primary manufacturer part number: MD-1.
Features
  • Test Set,insulation Breakdown — FSC 6625
  • DC Voltage Rating: 24.0 VOLTS MINIMUM AND 30.0 VOLTS MAXIMUM
  • Circuit Overload Protection Device: FUSE
  • Reference Data and Literature: TO 33A1-15-75-1
  • Output Current Type: DC
  • Nondefinitive Spec/std Data: MIL-T-4791 TYPE MD-1 TYPE
  • Meter Quantity: 2
  • Output Voltage Rating: 1.5000 VOLTS MINIMUM AND 15.000 VOLTS MAXIMUM
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 6625-00-575-4625, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-575-4625
Primary Part NumberMD-1
Item NameTest Set,insulation Breakdown
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
DC Voltage Rating24.0 VOLTS MINIMUM AND 30.0 VOLTS MAXIMUM
Circuit Overload Protection DeviceFUSE
Reference Data and LiteratureTO 33A1-15-75-1
Output Current TypeDC
Nondefinitive Spec/std DataMIL-T-4791 TYPE MD-1 TYPE
Meter Quantity2
Output Voltage Rating1.5000 VOLTS MINIMUM AND 15.000 VOLTS MAXIMUM
Precious MaterialSILVER
Installation DesignPORTABLE
Scale Range+1.5 TO 15.0 KILOVOLTS AND +0.0 TO 100.0 MICROAMPS
Meter TypeVOLTMETER AND AMMETER
Leakage Indicator TypeMETER
AC Voltage Rating120.0 VOLTS NOMINAL
Test Lead Quantity2
PhaseSINGLE
Wire Lead Length180.000 INCHES NOMINAL IN
Frequency Rating60.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM
Wire Termination TypeCLIP
DC Voltage Rating24.0 VOLTS MINIMUM AND 30.0 VOLTS MAXIMUM
Circuit Overload Protection DeviceFUSE
Reference Data and LiteratureTO 33A1-15-75-1
Output Current TypeDC
Nondefinitive Spec/std DataMIL-T-4791 TYPE MD-1 TYPE
Meter Quantity2
Output Voltage Rating1.5000 VOLTS MINIMUM AND 15.000 VOLTS MAXIMUM
Precious MaterialSILVER
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-01-270-7780
HAZMATNo
Shelf Life Code0
Criticality CodeU
Unit of IssueEA
SMR CodeVU
Weight25.0000 lbs
Cube6.7500 cu ft
Verified Substitutes 3
7045-01-223-9840MD1-D SUCCESSOR
Disk,flexible
Maxell Corporation of America Dba (foreign Parent Is Hitachi Maxell Ltd, Osaka, Japan) Div Professional Media Products Group
Test Set,insulation Breakdown
6660-01-519-37040843 INTERCHANGEABLE
Meteorological Measuring Set
Nielsen-Kellerman Co
Cross-Reference Index
Part NumberManufacturer
MD-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
63-0852-1000 Val-Tronics Inc (USA)
TYPE MD-1-MODEL 0852 Val-Tronics Inc (USA)
MD-1 Val-Tronics Inc (USA)
0852 Val-Tronics Inc (USA)
MILT4791TYPEMD1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6625-01-270-7780 Test Set,insulation Breakdown
7045-01-223-9840SUCCESSOR
DISK,FLEXIBLE
MD1-D
6660-01-519-3704INTERCHANGEABLE
METEOROLOGICAL MEASURING SET
0843

Frequently Asked Questions

What is NSN 6625-00-575-4625?

NSN 6625-00-575-4625 is a Test Set,insulation Breakdown, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-575-4625?

NSN 6625-00-575-4625 has 6 cross-referenced part numbers: MD-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 63-0852-1000 (Val-Tronics Inc), TYPE MD-1-MODEL 0852 (Val-Tronics Inc), MD-1 (Val-Tronics Inc), 0852 (Val-Tronics Inc) and 1 more.

What NSN replaces 6625-00-575-4625?

There are 3 known substitutes for 6625-00-575-4625: 7045-01-223-9840, 6625-01-270-7780, 6660-01-519-3704. Verify interchangeability with system specifications before substitution.

What are the specifications of MD-1?

Key specifications for MD-1: DC Voltage Rating: 24.0 VOLTS MINIMUM AND 30.0 VOLTS MAXIMUM; Circuit Overload Protection Device: FUSE; Reference Data and Literature: TO 33A1-15-75-1; Output Current Type: DC. 30 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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