PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

75-191Relay,electromagnetic

Automatic Switch Company Dba Asco · NSN 5945-01-230-9574 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-230-9574 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-230-9574. Primary manufacturer part number: 75-191.
Features
  • Relay,electromagnetic — FSC 5945
  • Duty Type: CONTINUOUS
  • Fragility Factor: MODERATELY RUGGED
  • Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 3 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
  • Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY
  • Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Purpose for Which Designed: GENERAL
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-230-9574, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 15 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-01-230-9574
Primary Part Number75-191
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerAutomatic Switch Company Dba Asco
StatusACTIVE
Duty TypeCONTINUOUS
Fragility FactorMODERATELY RUGGED
Nonpile-Up Main Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 3 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Purpose for Which DesignedGENERAL
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.219 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Coil Quantity1
Terminal Type and Quantity10 SCREW ALL FUNCTIONS
Cubic Measure22.750 CUBIC INCHES
Arc Quenching MethodAIR
Center to Center Distance Between Mounting Facilities Parallel to Length3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Storage TypeGENERAL PURPOSE WAREHOUSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
1315-00-028-4803 INTERCHANGEABLE
Cartridge,105 Millimeter
1315-00-301-1770 INTERCHANGEABLE
Cartridge,105 Millimeter
1315-00-892-4095 INTERCHANGEABLE
Cartridge,105 Millimeter
5985-00-911-709975191 INTERCHANGEABLE
Waveguide Assembly
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5950-01-069-7193 INTERCHANGEABLE
Transformer,radio Frequency
2920-01-167-223875191 INTERCHANGEABLE
Coil,exciter
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
Cross-Reference Index
Part NumberManufacturer
75-191 Automatic Switch Company Dba Asco (USA)
75-183 PIECE 4 Automatic Switch Company Dba Asco (USA)
Related Parts
1315-00-028-4803INTERCHANGEABLE
CARTRIDGE,105 MILLIMETER
1315-00-301-1770INTERCHANGEABLE
CARTRIDGE,105 MILLIMETER
1315-00-892-4095INTERCHANGEABLE
CARTRIDGE,105 MILLIMETER
5985-00-911-7099INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
75191
5950-01-069-7193INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
2920-01-167-2238INTERCHANGEABLE
COIL,EXCITER
75191

Frequently Asked Questions

What is NSN 5945-01-230-9574?

NSN 5945-01-230-9574 is a Relay,electromagnetic, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-230-9574?

NSN 5945-01-230-9574 has 2 cross-referenced part numbers: 75-191 (Automatic Switch Company Dba Asco), 75-183 PIECE 4 (Automatic Switch Company Dba Asco).

What NSN replaces 5945-01-230-9574?

There are 6 known substitutes for 5945-01-230-9574: 1315-00-028-4803, 1315-00-301-1770, 1315-00-892-4095 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 75-191?

Key specifications for 75-191: Duty Type: CONTINUOUS; Fragility Factor: MODERATELY RUGGED; Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 3 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY. 19 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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