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B1789 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include overall_length: 3.375 INCHES NOMINAL IN, overall_diameter: 1.250 INCHES NOMINAL IN, contact_arrangement: SINGLE POLE, SINGLE THROW, NORMALLY OPEN, delay_time_in_seconds: 20.0 FIXED OPERATE NOMINAL, heater_power_rating_in_watts: 5.0, heater_voltage_rating_in_volts: 115.0. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-351-4677, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B1789
NSN: 5945-00-351-4677
FSC: 5945
CAGE: 58880 — MEGGITT (NEW HAMPSHIRE), INC (USA)
SPECIFICATIONS
overall_length3.375 INCHES NOMINAL IN
overall_diameter1.250 INCHES NOMINAL IN
contact_arrangementSINGLE POLE, SINGLE THROW, NORMALLY OPEN
delay_time_in_seconds20.0 FIXED OPERATE NOMINAL
heater_power_rating_in_watts5.0
heater_voltage_rating_in_volts115.0
mounting_facility_type_and_quantity1 OCTAL BASE PLUG-IN
contact_maximum_current_rating_in_amps3.0 AC
contact_maximum_voltage_rating_in_volts230.0 AC
NSN5945-00-351-4677
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONNECTOR,RECEPTACLE,ELECTRICAL TITLE COMPONENT PN B1789 MFR CONNECTOR,RECEPTACLE,E
KEY FEATURES
•
CONTACT MAXIMUM VOLTAGE RATING IN VOLTS: 230.0 AC
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 OCTAL BASE PLUG-IN
•
HEATER POWER RATING IN WATTS: 5.0
•
CONTACT MAXIMUM CURRENT RATING IN AMPS: 3.0 AC
•
CONTACT ARRANGEMENT: SINGLE POLE, SINGLE THROW, NORMALLY OPEN
•
OVERALL DIAMETER: 1.250 INCHES NOMINAL IN
•
HEATER VOLTAGE RATING IN VOLTS: 115.0
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.375 INCHES NOMINAL IN
CONTACT MAXIMUM VOLTAGE RATING IN VOLTS230.0 AC
MOUNTING FACILITY TYPE AND QUANTITY1 OCTAL BASE PLUG-IN
HEATER POWER RATING IN WATTS5.0
CONTACT MAXIMUM CURRENT RATING IN AMPS3.0 AC
CONTACT ARRANGEMENTSINGLE POLE, SINGLE THROW, NORMALLY OPEN
OVERALL DIAMETER1.250 INCHES NOMINAL IN
HEATER VOLTAGE RATING IN VOLTS115.0
DELAY TIME IN SECONDS20.0 FIXED OPERATE NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
1790-131 3INInterchangeable
interchangeable cross-reference
interchangeable
1790-031 3INInterchangeable
interchangeable cross-reference
interchangeable
1790-131Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1789?
B1789 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace B1789?
There are 3 known substitutes for B1789: 1790-131 3IN, 1790-031 3IN, 1790-131. Substitute compatibility should be verified for your specific system.
What is the NSN for B1789?
B1789 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-351-4677. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026