PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BR12-3-1KB73-0-8-5-6Relay,electromagnetic

Microsemi Corp.-Power Management Group · NSN 5945-00-879-1928 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-879-1928 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-879-1928. Primary manufacturer part number: BR12-3-1KB73-0-8-5-6.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Coil Quantity: 1
  • Winding DC Resistance Rating: 3.1 KILOHMS NOMINAL SINGLE WINDING
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 0.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Features Provided: POLARIZED
  • Main Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Unthreaded Mounting Hole Diameter: 0.094 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-879-1928, 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 Microsemi Corp.-Power Management Group. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-879-1928
Primary Part NumberBR12-3-1KB73-0-8-5-6
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMicrosemi Corp.-Power Management Group
StatusACTIVE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Coil Quantity1
Winding DC Resistance Rating3.1 KILOHMS NOMINAL SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length0.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Features ProvidedPOLARIZED
Main Contact Maximum Voltage Rating in Volts28.0 DC
Unthreaded Mounting Hole Diameter0.094 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp15.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Pile-Up Auxiliary Contact Form Arrangement2C
Duty TypeCONTINUOUS
Nominal Operating Current Rating and Type0.005 AMPERES DC SINGLE WINDING
Environmental ProtectionHERMETIC
Winding Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Width1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Auxiliary Contact Maximum Voltage Rating in Volts120.0 AC
Pile-Up Main Contact Form Arrangement2C
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES DC RESISTIVE LOAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
7510-01-381-5300DP5300 INTERCHANGEABLE
Protector,document
Safina Office Products, Inc. Dba Safina Office Products Inc
Cross-Reference Index
Part NumberManufacturer
BR12-3-1KB73-0-8-5-6 Microsemi Corp.-Power Management Group (USA)
94421 Sigma Instruments Inc (USA)
Related Parts
7510-01-381-5300INTERCHANGEABLE
PROTECTOR,DOCUMENT
DP5300

Frequently Asked Questions

What is NSN 5945-00-879-1928?

NSN 5945-00-879-1928 is a Relay,electromagnetic, manufactured by Microsemi Corp.-Power Management Group, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-879-1928?

NSN 5945-00-879-1928 has 2 cross-referenced part numbers: BR12-3-1KB73-0-8-5-6 (Microsemi Corp.-Power Management Group), 94421 (Sigma Instruments Inc).

What NSN replaces 5945-00-879-1928?

There is 1 known substitute for 5945-00-879-1928: 7510-01-381-5300. Verify interchangeability with system specifications before substitution.

What are the specifications of BR12-3-1KB73-0-8-5-6?

Key specifications for BR12-3-1KB73-0-8-5-6: Overall Length: 1.188 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 0.906 INCHES NOMINAL IN; Coil Quantity: 1. 22 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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