PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4400B1551Relay,electromagnetic

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 5945-00-860-0851 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-860-0851 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-860-0851. Primary manufacturer part number: 4400B1551.
Features
  • Relay,electromagnetic — FSC 5945
  • Auxiliary Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Main Contact Load Current Rating at Maximum Rated Voltage: 30.0 AMPERES AC RESISTIVE LOAD
  • Frequency in Hertz: 60.0 NOMINAL
  • Main Contact Maximum Voltage Rating in Volts: 440.0 AC
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Unthreaded Mounting Hole Diameter: 0.164 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding Quantity: 1
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-860-0851, 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 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-860-0851
Primary Part Number4400B1551
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusACTIVE
Auxiliary Contact Maximum Voltage Rating in Volts28.0 DC
Main Contact Load Current Rating at Maximum Rated Voltage30.0 AMPERES AC RESISTIVE LOAD
Frequency in Hertz60.0 NOMINAL
Main Contact Maximum Voltage Rating in Volts440.0 AC
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.164 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle3.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Coil Quantity1
Terminal Type and Quantity10 PIN ALL FUNCTIONS
Duty TypeCONTINUOUS
Nonpile-Up Auxiliary Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Nonpile-Up Main Contact Arrangement3 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5962-01-072-408433130 INTERCHANGEABLE
Microcircuit,linear
Spectrum Microwave, Inc.
4820-01-152-063733164 PIECE 4 INTERCHANGEABLE
Seat,valve
Tate Andale, Llc
2910-01-524-3009R20P INTERCHANGEABLE
Filter Element,fluid
Parker-Hannifin Corporation Dba Racor Division Div Racor Division
Cross-Reference Index
Part NumberManufacturer
33164 Cooper Industries Inc Cooper Distribution Equipment Div (USA)
4400B1551 Lockheed Corp Lockheed Electronics Co Inc (USA)
4400B1551 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
Related Parts
5962-01-072-4084INTERCHANGEABLE
MICROCIRCUIT,LINEAR
33130
4820-01-152-0637INTERCHANGEABLE
SEAT,VALVE
33164 PIECE 4
2910-01-524-3009INTERCHANGEABLE
FILTER ELEMENT,FLUID
R20P

Frequently Asked Questions

What is NSN 5945-00-860-0851?

NSN 5945-00-860-0851 is a Relay,electromagnetic, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-860-0851?

NSN 5945-00-860-0851 has 3 cross-referenced part numbers: 33164 (Cooper Industries Inc Cooper Distribution Equipment Div), 4400B1551 (Lockheed Corp Lockheed Electronics Co Inc), 4400B1551 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems).

What NSN replaces 5945-00-860-0851?

There are 3 known substitutes for 5945-00-860-0851: 5962-01-072-4084, 4820-01-152-0637, 2910-01-524-3009. Verify interchangeability with system specifications before substitution.

What are the specifications of 4400B1551?

Key specifications for 4400B1551: Overall Length: 3.500 INCHES NOMINAL IN; Auxiliary Contact Maximum Voltage Rating in Volts: 28.0 DC; Main Contact Load Current Rating at Maximum Rated Voltage: 30.0 AMPERES AC RESISTIVE LOAD; Frequency in Hertz: 60.0 NOMINAL. 18 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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