Model: 555261-053

Circuit Breaker
Description:

Single pole type body style, 2.500 inches body length, 0.750 inches body width, plastic case material, 1.938 inches center to center distance between terminals parallel to length.

Properties:

Body Style
Single pole type
Body Length
2.500 inches
Body Width
0.750 inches
Case Material
Plastic
Center To Center Distance Between Terminals Parallel To Length
1.938 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
2.062 inches
Switch Contact Arrangement
Single pole, double throw
Fragility Factor
Moderately rugged
Boss Height
0.140 inches
Mounting Surface To Terminal End Distance
2.611 inches
Pole Quantity
1
Arc Quenching Method
Air
Mounting Facility Type And Quantity
2 threaded hole
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
9.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts
50.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
2000.0 dc single location
Circuit Protection Type
Overcurrent single location
Trip Release Method
Magnetic-hydraulic single location
Trip Release Characteristic
Time delay single location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 single location
Reset Method
Manual
Main Contact Tripping Mechanism Type
Trip free
Manual Actuator Type And Quantity
1 toggle
Actuator Function
Trip-reset
Actuator Position Designation
At pole one
Auxiliary Switch Function And Quantity
1 alarm
Internal Trip Release Configuration
Series trip single location
Thread Size
0.138 inches
Switch Location And Position Designation
Internal at pole one
Trip Delay Time In Seconds Per Rated Continuous Current
0.250 at 200 pct single location and 0.750 at 200 pct single location
Inclosure Protection Type For Which Designed
Moisture resistant and fungus resistant
Switch Terminal Type
Tab, solder lug
Switch Current Rating And Type In Amps
2.5 ac and 1.0 dc
Switch Voltage Rating And Type In Volts
250.0 ac and 50.0 dc
Thread Series Designator
Unc
Terminal Type And Quantity
2 threaded stud
NSN
5925-00-184-5973
Part Number
555261-053
Description
Circuit Breaker
CAGE
12436

A device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller.

Part 555261-053 NSN 5925-00-184-5973

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00136
FIIG:
A030A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8536200040
  • SITC: 77252
  • End Use: Electric apparatus
  • NAICS: 335313
  • USDA: 1

Freight Class: Automatic circuit breakers, for a voltage not exceeding 1,000 v, nesoi

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