Model: 121-126

Circuit Breaker

Properties:

Body Style
Single pole type
Bushing Length
0.500 inches
Body Length
1.375 inches
Body Width
0.750 inches
Case Material
Plastic
Center To Center Distance Between Terminals Parallel To Length
0.850 inches
Fragility Factor
Moderately rugged
Mounting Surface To Terminal End Distance
1.815 inches
Pole Quantity
1
Arc Quenching Method
Air
Mounting Facility Type And Quantity
1 threaded bushing
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
28
Maximum Continuous Load Current Rating Per Pole
10.0 amperes ac single location and 10.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts
250.0 ac single location and 50.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
1000.0 ac single location and 2000.0 dc single location
Circuit Protection Type
Overcurrent single location
Trip Release Method
Thermal 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 push button
Actuator Function
Reset
Actuator Position Designation
At pole one
Internal Trip Release Configuration
Series trip single location
Thread Size
0.438 inches
Trip Delay Time In Seconds Per Rated Continuous Current
6.000 at 200 pct single location and 30.000 at 200 pct single location
Inclosure Protection Type For Which Designed
Shock resistant and vibration resistant
Trip Release Ambient Tempurature Rating
25.0 degrees celsius single location
Frequency In Hertz
60.0 single location
Unpackaged Unit Weight
1.500 ounces
Thread Series Designator
Unef
Terminal Type And Quantity
2 quick disconnect, female
NSN
5925-01-165-9911
Part Number
121-126
Description
Circuit Breaker
CAGE
25709

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 121-126 NSN 5925-01-165-9911

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:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
--
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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