Model: SW251-2

Circuit Breaker

Properties:

Body Style
Multipole-multiple actuator type
Body Length
2.500 inches
Body Width
1.500 inches
Case Material
Plastic
Center To Center Distance Between Terminals Parallel To Length
1.938 inches
Center To Center Distance Between Terminals Parallel To Width
0.750 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
2.062 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width
0.750 inches
Fragility Factor
Moderately rugged
Boss Height
0.140 inches
Mounting Surface To Terminal End Distance
2.611 inches
Pole Quantity
2
Arc Quenching Method
Magnetic blowout
Mounting Facility Type And Quantity
4 threaded hole
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
20.0 amperes ac all locations
Operating Voltage Type And Rating Per Pole In Volts
230.0 ac all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
1000.0 ac all locations
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Magnetic-hydraulic all locations
Trip Release Characteristic
Time delay all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
150.0 all locations
Reset Method
Manual
Main Contact Tripping Mechanism Type
Trip free
Manual Actuator Type And Quantity
2 toggle
Actuator Function
Trip-reset
Actuator Position Designation
At each pole
External Actuator Linkage Arrangement
One and two linked
Internal Trip Release Configuration
Series trip all locations
Thread Size
0.138 inches
Trip Delay Time In Seconds Per Rated Continuous Current
0.300 at 200 pct all locations and 1.000 at 200 pct all locations
Inclosure Protection Type For Which Designed
Fungus resistant and moisture resistant
Frequency In Hertz
60.0 all locations
Unpackaged Unit Weight
8.250 ounces
Thread Series Designator
Unc
Terminal Type And Quantity
4 threaded stud
NSN
5925-00-927-5411
Part Number
SW251-2
Description
Circuit Breaker
CAGE
82679

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 SW251-2 NSN 5925-00-927-5411

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
77.5
WCC:
658
TCC:
Z
SHC:
5
ACC:
Instruments/Radio

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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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