PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILS17773Switching Unit,power Transfer

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6110-01-231-2073 · FSC 6110 · No Item Name Available
Verified by PartsTable
NSN 6110-01-231-2073 — this item is cataloged by the U.S. Government under National Stock Number 6110-01-231-2073. Primary manufacturer part number: MILS17773.
Features
  • Switching Unit,power Transfer — FSC 6110
  • Current Type: AC
  • Current Rating in Amps: 50.0
  • Switch Pole Quantity: 3
  • Voltage in Volts: 450.0
  • Enclosure Feature: DRIPPROOF
  • Phase: THREE
  • Frequency Rating: 60.0 HERTZ NOMINAL
Applications
  • Electrical power distribution
  • Generator and power systems
  • Industrial motor installations
General Description

The Switching Unit,power Transfer, cataloged under National Stock Number 6110-01-231-2073, is classified within Federal Supply Class 6110 (No Item Name Available) of the Electric Wire, Power, and Distribution 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6110-01-231-2073
Primary Part NumberMILS17773
Item NameSwitching Unit,power Transfer
FSC / FSG6110 / 61 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Current TypeAC
Current Rating in Amps50.0
Switch Pole Quantity3
Voltage in Volts450.0
Enclosure FeatureDRIPPROOF
PhaseTHREE
Frequency Rating60.0 HERTZ NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 6
No Item Name Available
6110-01-409-139894231009A2D SUCCESSOR
Switching Unit,power Transfer
Automatic Switch Company Dba Asco
Switching Unit,power Transfer
6110-00-401-998482-152 INTERCHANGEABLE
Switching Unit,power Transfer
Asco Power Technologies, L..p.
6110-00-635-759337-700 INTERCHANGEABLE
Switching Unit,power Transfer
Asco Power Technologies, L..p.
6110-00-728-0680N287-2 INTERCHANGEABLE
Switching Unit,power Transfer
Ward Leonard Ct Llc
Cross-Reference Index
Part NumberManufacturer
MILS17773 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
ABT-4A3-50D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
DOD-S-17773B(SH) Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9423509A3D Automatic Switch Company Dba Asco (USA)
Related Parts
6110-00-635-7609SUCCESSOR
NO ITEM NAME AVAILABLE
6110-01-409-1398SUCCESSOR
SWITCHING UNIT,POWER TRANSFER
94231009A2D
6110-01-469-0671SUCCESSOR
SWITCHING UNIT,POWER TRANSFER
6110-00-401-9984INTERCHANGEABLE
SWITCHING UNIT,POWER TRANSFER
82-152
6110-00-635-7593INTERCHANGEABLE
SWITCHING UNIT,POWER TRANSFER
37-700
6110-00-728-0680INTERCHANGEABLE
SWITCHING UNIT,POWER TRANSFER
N287-2

Frequently Asked Questions

What is NSN 6110-01-231-2073?

NSN 6110-01-231-2073 is a Switching Unit,power Transfer, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6110-01-231-2073?

NSN 6110-01-231-2073 has 4 cross-referenced part numbers: MILS17773 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), ABT-4A3-50D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), DOD-S-17773B(SH) (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 9423509A3D (Automatic Switch Company Dba Asco).

What NSN replaces 6110-01-231-2073?

There are 6 known substitutes for 6110-01-231-2073: 6110-00-635-7609, 6110-01-409-1398, 6110-01-469-0671 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILS17773?

Key specifications for MILS17773: Current Type: AC; Current Rating in Amps: 50.0; Switch Pole Quantity: 3; Voltage in Volts: 450.0. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6110-01-231-2073 still in active supply?

NSN 6110-01-231-2073 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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