PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18123Circuit Breaker

Drs Advanced Isr, Llc · NSN 5925-01-031-9911 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-031-9911 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-031-9911. Primary manufacturer part number: 18123.
Features
  • Circuit Breaker — FSC 5925
  • Unpackaged Unit Weight: 8.500 OUNCES NOMINAL OZ
  • Manual Actuator Type and Quantity: 1 TOGGLE
  • Body Width: 1.540 INCHES NOMINAL IN
  • Operating Voltage Type and Rating Per Pole in Volts: 120.0 AC ALL LOCATIONS
  • Frequency in Hertz: 60.0 ALL LOCATIONS
  • Terminal Type and Quantity: 4 QUICK DISCONNECT, MALE
  • Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-031-9911, 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 Drs Advanced Isr, Llc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5925-01-031-9911
Primary Part Number18123
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerDrs Advanced Isr, Llc
StatusACTIVE
Unpackaged Unit Weight8.500 OUNCES NOMINAL OZ
Manual Actuator Type and Quantity1 TOGGLE
Body Width1.540 INCHES NOMINAL IN
Operating Voltage Type and Rating Per Pole in Volts120.0 AC ALL LOCATIONS
Frequency in Hertz60.0 ALL LOCATIONS
Terminal Type and Quantity4 QUICK DISCONNECT, MALE
Internal Trip Release ConfigurationSERIES TRIP ALL LOCATIONS
Trip Release MethodMAGNETIC-HYDRAULIC ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Actuator Position DesignationBETWEEN POLE ONE AND TWO
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps10000.0 AC ALL LOCATIONS
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 ALL LOCATIONS
MaterialPLASTIC CASE
Reset MethodMANUAL
Trip Delay Time in Seconds Per Rated Continuous Current0.050 MINIMUM AT 200 PCT AND 1.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Actuator FunctionTRIP-RESET
Inclosure Protection Type for Which DesignedFUNGUS RESISTANT
Maximum Continuous Load Current Rating Per Pole1.0 AMPERES AC ALL LOCATIONS
Center to Center Distance Between Terminals Parallel to Width0.625 INCHES NOMINAL IN
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodMAGNETIC BLOWOUT
Boss Height0.250 INCHES NOMINAL IN
Pole Quantity2
Mounting Facility Type and Quantity2 CLIP
Body Length2.000 INCHES NOMINAL IN
Body Height1.770 INCHES MAXIMUM IN
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-036-1711005.102.0040 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
3110-00-156-357610879 INTERCHANGEABLE
Bearing,ball,annular
Uniontools Inc
5310-00-250-206218123 INTERCHANGEABLE
Washer,flat
Arvinmeritor Inc
3120-00-661-4982 INTERCHANGEABLE
Bearing,sleeve
6240-01-480-21751G4023 INTERCHANGEABLE
Lamp,fluorescent
Technical Consumer Products, Inc.
5999-01-496-647518-123 INTERCHANGEABLE
Contact,electrical
Power Connector Llc
Cross-Reference Index
Part NumberManufacturer
18123 PRIMARY Drs Advanced Isr, Llc (USA)
203-22-1-61F-102-4-1-1 Sensata Technologies Maryland, Inc (USA)
203-22-2949-1 Sensata Technologies Maryland, Inc (USA)
Related Parts
4820-00-036-1711INTERCHANGEABLE
DISK,VALVE
005.102.0040
3110-00-156-3576INTERCHANGEABLE
BEARING,BALL,ANNULAR
10879
5310-00-250-2062INTERCHANGEABLE
WASHER,FLAT
18123
3120-00-661-4982INTERCHANGEABLE
BEARING,SLEEVE
6240-01-480-2175INTERCHANGEABLE
LAMP,FLUORESCENT
1G4023
5999-01-496-6475INTERCHANGEABLE
CONTACT,ELECTRICAL
18-123

Frequently Asked Questions

What is NSN 5925-01-031-9911?

NSN 5925-01-031-9911 is a Circuit Breaker, manufactured by Drs Advanced Isr, Llc, classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-01-031-9911?

NSN 5925-01-031-9911 has 3 cross-referenced part numbers: 18123 (Drs Advanced Isr, Llc), 203-22-1-61F-102-4-1-1 (Sensata Technologies Maryland, Inc), 203-22-2949-1 (Sensata Technologies Maryland, Inc).

What NSN replaces 5925-01-031-9911?

There are 6 known substitutes for 5925-01-031-9911: 4820-00-036-1711, 3110-00-156-3576, 5310-00-250-2062 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18123?

Key specifications for 18123: Unpackaged Unit Weight: 8.500 OUNCES NOMINAL OZ; Manual Actuator Type and Quantity: 1 TOGGLE; Body Width: 1.540 INCHES NOMINAL IN; Operating Voltage Type and Rating Per Pole in Volts: 120.0 AC ALL LOCATIONS. 29 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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