PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2133Relay,thermal

Meggitt (new Hampshire), Inc · NSN 5945-00-246-8489 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-246-8489 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-246-8489. Primary manufacturer part number: B2133.
Features
  • Relay,thermal — FSC 5945
  • Heater Power Rating in Watts: 5.0
  • Terminal Type and Quantity: 8 PIN
  • Contact Maximum Current Rating in Amps: 3.0 AC
  • Overall Diameter: 1.275 INCHES NOMINAL IN
  • Contact Arrangement: SINGLE POLE, DOUBLE THROW
  • Contact Maximum Voltage Rating in Volts: 450.0 AC
  • Mounting Facility Type and Quantity: 1 OCTAL BASE PLUG-IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,thermal, cataloged under National Stock Number 5945-00-246-8489, 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 Meggitt (new Hampshire), Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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: Active.

Technical Specifications
ParameterValue
NSN5945-00-246-8489
Primary Part NumberB2133
Item NameRelay,thermal
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMeggitt (new Hampshire), Inc
StatusACTIVE
Heater Power Rating in Watts5.0
Terminal Type and Quantity8 PIN
Contact Maximum Current Rating in Amps3.0 AC
Overall Diameter1.275 INCHES NOMINAL IN
Contact ArrangementSINGLE POLE, DOUBLE THROW
Contact Maximum Voltage Rating in Volts450.0 AC
Mounting Facility Type and Quantity1 OCTAL BASE PLUG-IN
Heater Voltage Rating in Volts117.0
Delay Time in Seconds153.0 ADJUSTABLE OPERATE MINIMUM AND 207.0 ADJUSTABLE OPERATE MAXIMUM
Environmental ProtectionHERMETIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5945-00-259-4368560559 INTERCHANGEABLE
Relay,thermal
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
5945-00-273-68647887522-5 INTERCHANGEABLE
Relay,thermal
Lockheed Martin Corporation Div Rms
6105-00-635-48875KH33BB100 INTERCHANGEABLE
Motor,alternating Current
General Electric Company
2520-01-317-4666B2133 INTERCHANGEABLE
Cover,transmission
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
6210-01-351-3943 INTERCHANGEABLE
Filter,indicator Light
5998-01-603-949079C0967-16 INTERCHANGEABLE
Nrp,cpu Card
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
B2133 Meggitt (new Hampshire), Inc (USA)
B1578 Meggitt (new Hampshire), Inc (USA)
501-B-2033 Jettron Products Inc (USA)
B2033 Meggitt (new Hampshire), Inc (USA)
501 Meggitt (new Hampshire), Inc (USA)
Related Parts
5945-00-259-4368INTERCHANGEABLE
RELAY,THERMAL
560559
5945-00-273-6864INTERCHANGEABLE
RELAY,THERMAL
7887522-5
6105-00-635-4887INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5KH33BB100
2520-01-317-4666INTERCHANGEABLE
COVER,TRANSMISSION
B2133
6210-01-351-3943INTERCHANGEABLE
FILTER,INDICATOR LIGHT
5998-01-603-9490INTERCHANGEABLE
NRP,CPU CARD
79C0967-16

Frequently Asked Questions

What is NSN 5945-00-246-8489?

NSN 5945-00-246-8489 is a Relay,thermal, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-246-8489?

NSN 5945-00-246-8489 has 5 cross-referenced part numbers: B2133 (Meggitt (new Hampshire), Inc), B1578 (Meggitt (new Hampshire), Inc), 501-B-2033 (Jettron Products Inc), B2033 (Meggitt (new Hampshire), Inc), 501 (Meggitt (new Hampshire), Inc).

What NSN replaces 5945-00-246-8489?

There are 6 known substitutes for 5945-00-246-8489: 5945-00-259-4368, 5945-00-273-6864, 6105-00-635-4887 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B2133?

Key specifications for B2133: Heater Power Rating in Watts: 5.0; Terminal Type and Quantity: 8 PIN; Contact Maximum Current Rating in Amps: 3.0 AC; Overall Diameter: 1.275 INCHES NOMINAL IN. 11 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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