PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B330Circuit Breaker

Siemens Energy and Automation Inc Ite Circuit Protection Div · NSN 5925-01-387-6473 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-387-6473 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-387-6473. Primary manufacturer part number: B330.
Features
  • Circuit Breaker — FSC 5925
  • Trip Release Characteristic: INSTANTANEOUS ALL LOCATIONS
  • Maximum Continuous Load Current Rating Per Pole: 30.0 AMPERES AC ALL LOCATIONS
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Actuator Position Designation: AT EACH POLE
  • Pole Quantity: 3
  • Mounting Facility Type and Quantity: 6 CLIP
  • Frequency in Hertz: 60.0 ALL LOCATIONS
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-387-6473, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Siemens Energy and Automation Inc Ite Circuit Protection Div. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-01-387-6473
Primary Part NumberB330
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerSiemens Energy and Automation Inc Ite Circuit Protection Div
StatusACTIVE
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Maximum Continuous Load Current Rating Per Pole30.0 AMPERES AC ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Actuator Position DesignationAT EACH POLE
Pole Quantity3
Mounting Facility Type and Quantity6 CLIP
Frequency in Hertz60.0 ALL LOCATIONS
Body StyleRECTANGULAR DIMENSIONAL ENVELOPE
Reset MethodMANUAL
Terminal Type and Quantity3 COMPRESSION AND 3 TAB, SOLDER LUG
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps10000.0 AC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
External Actuator Linkage ArrangementONE, TWO, AND THREE LINKED
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 ALL LOCATIONS
Operating Voltage Type and Rating Per Pole in Volts240.0 AC ALL LOCATIONS
Internal Trip Release ConfigurationSERIES TRIP ALL LOCATIONS
MaterialPLASTIC CASE
Manual Actuator Type and Quantity3 TOGGLE
Trip Release MethodMAGNETIC ALL LOCATIONS
Actuator FunctionTRIP-RESET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4520-00-383-215653886 INTERCHANGEABLE
Heating Element,electrical,nonim
Square D Co Cedar Rapids Mfg Plant
8455-00-577-5267 INTERCHANGEABLE
Insignia,grade,enlisted Personne
8455-00-577-5297 INTERCHANGEABLE
Insignia,grade,enlisted Personne
8455-00-577-5305 INTERCHANGEABLE
Insignia,grade,enlisted Personne
8455-00-656-1381 INTERCHANGEABLE
Insignia,grade,enlisted Personne
6110-00-754-7677B3-30 INTERCHANGEABLE
Protector,thermal-Overload,elect
Schneider Electric Usa, Inc.
6240-00-851-435210051850 INTERCHANGEABLE
Lamp,incandescent
Us Army Aviation and Missile Command
5330-00-986-1238B330 INTERCHANGEABLE
Gasket
Gast Mfg Corp
8455-01-048-3006 INTERCHANGEABLE
Insignia,grade,enlisted Personne
4140-01-486-156279C0050-00 INTERCHANGEABLE
Fan,tubeaxial
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
B330 PRIMARY Siemens Energy and Automation Inc Ite Circuit Protection Div (USA)
Related Parts
4520-00-383-2156INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
53886
8455-00-577-5267INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
8455-00-577-5297INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
8455-00-577-5305INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
8455-00-656-1381INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
6110-00-754-7677INTERCHANGEABLE
PROTECTOR,THERMAL-OVERLOAD,ELECT
B3-30
6240-00-851-4352INTERCHANGEABLE
LAMP,INCANDESCENT
10051850
5330-00-986-1238INTERCHANGEABLE
GASKET
B330
8455-01-048-3006INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
4140-01-486-1562INTERCHANGEABLE
FAN,TUBEAXIAL
79C0050-00
7690-01-649-7350INTERCHANGEABLE
LABEL
B-330

Frequently Asked Questions

What is NSN 5925-01-387-6473?

NSN 5925-01-387-6473 is a Circuit Breaker, manufactured by Siemens Energy and Automation Inc Ite Circuit Protection Div, classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-01-387-6473?

NSN 5925-01-387-6473 has 1 cross-referenced part number: B330 (Siemens Energy and Automation Inc Ite Circuit Protection Div).

What NSN replaces 5925-01-387-6473?

There are 11 known substitutes for 5925-01-387-6473: 4520-00-383-2156, 8455-00-577-5267, 8455-00-577-5297 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B330?

Key specifications for B330: Overall Width: 3.000 INCHES NOMINAL IN; Trip Release Characteristic: INSTANTANEOUS ALL LOCATIONS; Maximum Continuous Load Current Rating Per Pole: 30.0 AMPERES AC ALL LOCATIONS; Main Contact Tripping Mechanism Type: TRIP FREE. 23 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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