PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20621Circuit Breaker

Thales Usa, Inc. Div Air Mobility Solutions ("ams") · NSN 5925-01-361-5434 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-361-5434 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-361-5434. Primary manufacturer part number: 20621.
Features
  • Circuit Breaker — FSC 5925
  • Material: PLASTIC CASE
  • External Actuator Linkage Arrangement: ONE, TWO, THREE, AND FOUR LINKED
  • Reset Method: MANUAL
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Fragility Factor: MODERATELY RUGGED
  • Mounting Facility Type and Quantity: 8 UNTHREADED HOLE(S)
  • Pole Quantity: 4
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-361-5434, 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 Thales Usa, Inc. Div Air Mobility Solutions ("ams"). Government technical data includes 25 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-01-361-5434
Primary Part Number20621
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerThales Usa, Inc. Div Air Mobility Solutions ("ams")
StatusACTIVE
MaterialPLASTIC CASE
External Actuator Linkage ArrangementONE, TWO, THREE, AND FOUR LINKED
Reset MethodMANUAL
Storage TypeGENERAL PURPOSE WAREHOUSE
Fragility FactorMODERATELY RUGGED
Mounting Facility Type and Quantity8 UNTHREADED HOLE(S)
Pole Quantity4
Special Handling FeatureMAGNETIC
Unthreaded Mounting Hole Diameter18.0 MILLIMETERS NOMINAL MM
Manual Actuator Type and Quantity4 TOGGLE
Actuator Position DesignationAT EACH POLE
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Actuator FunctionTRIP-RESET
Operating Voltage Type and Rating Per Pole in Volts50.0 AC ALL LOCATIONS
Terminal Type and Quantity8 COMPRESSION
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps20000.0 AC SINGLE LOCATION
Frequency in Hertz50.0 ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Maximum Continuous Load Current Rating Per Pole63.0 AMPERES AC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Inclosure Protection Type for Which DesignedGENERAL PURPOSE
Body StyleRECTANGULAR DIMENSIONAL ENVELOPE
Trip Release Ambient Temp Rating25.0 CELSIUS NOMINAL ALL LOCATIONS DEGC
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 ALL LOCATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5975-00-322-034620621 INTERCHANGEABLE
Collar,flange
Schneider Electric Usa, Inc.
2915-00-328-0974 INTERCHANGEABLE
Ball,choke Lever
5330-00-328-4509 INTERCHANGEABLE
Seal,grease
2940-00-377-518220621 INTERCHANGEABLE
Head,fluid Filter
Cummins Inc.
5950-00-645-1516052-000046 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5998-01-140-930820621 INTERCHANGEABLE
Circuit Card Assembly
L3 Technologies, Inc. Div Communication Systems-West
5975-01-367-9590206-21 INTERCHANGEABLE
Conduit Assembly,metal,flexible
Dcx-Chol Enterprises, Inc.
Cross-Reference Index
Part NumberManufacturer
20621 Schneider Electric France (FRA)
20621 PRIMARY Thales Usa, Inc. Div Air Mobility Solutions ("ams") (USA)
20621 Schneider Electric Industries SAS (merlin Gerin) (FRA)
Related Parts
5975-00-322-0346INTERCHANGEABLE
COLLAR,FLANGE
20621
2915-00-328-0974INTERCHANGEABLE
BALL,CHOKE LEVER
5330-00-328-4509INTERCHANGEABLE
SEAL,GREASE
2940-00-377-5182INTERCHANGEABLE
HEAD,FLUID FILTER
20621
5950-00-645-1516INTERCHANGEABLE
TRANSFORMER,POWER
052-000046
5998-01-140-9308INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
20621
5975-01-367-9590INTERCHANGEABLE
CONDUIT ASSEMBLY,METAL,FLEXIBLE
206-21

Frequently Asked Questions

What is NSN 5925-01-361-5434?

NSN 5925-01-361-5434 is a Circuit Breaker, manufactured by Thales Usa, Inc. Div Air Mobility Solutions ("ams"), classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-01-361-5434?

NSN 5925-01-361-5434 has 3 cross-referenced part numbers: 20621 (Schneider Electric France), 20621 (Thales Usa, Inc. Div Air Mobility Solutions ("ams")), 20621 (Schneider Electric Industries SAS (merlin Gerin)).

What NSN replaces 5925-01-361-5434?

There are 7 known substitutes for 5925-01-361-5434: 5975-00-322-0346, 2915-00-328-0974, 5330-00-328-4509 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20621?

Key specifications for 20621: Material: PLASTIC CASE; External Actuator Linkage Arrangement: ONE, TWO, THREE, AND FOUR LINKED; Overall Height: 70.0 MILLIMETERS NOMINAL MM; Reset Method: MANUAL. 28 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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