Model: 56J972

Circuit Breaker
Description:

Rectangular dimensional envelope body style, 23.875 inches overall length, 14.000 inches overall height, 14.375 inches overall width.

Properties:

Body Style
Rectangular dimensional envelope
Overall Length
23.875 inches
Overall Height
14.000 inches
Overall Width
14.375 inches
Case Material
Metal
Unthreaded Mounting Hole Diameter
0.562 inches
Pole Quantity
2
Mounting Facility Type And Quantity
6 unthreaded hole
Maximum Continuous Load Current Rating Per Pole
640.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts
1000.0 dc all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
20000.0 dc all locations
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Magnetic all locations
Trip Release Characteristic
Time delay all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
200.0 all locations
Reset Method
Automatic
Manual Actuator Type And Quantity
1 rotary
Auxiliary Switch Function And Quantity
1 control
Internal Trip Release Configuration
Shunt trip all locations
Terminal Type And Quantity
4 bus bar
Reference Number Differentiating Characteristics
As differentiated by continuous load current per pole, ultimate trip rating of continuous current rating per pole in percent
NSN
5925-00-257-5733
Part Number
56J972
Description
Circuit Breaker
CAGE
79500

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 56J972 NSN 5925-00-257-5733

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
28.0 X 18.0 X 17.0
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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:
9
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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