#976-1-1X21PC1C Circuit Breaker Tripping Unit | Circuit Breakers

976-1-1X21PC1C

Circuit Breaker Tripper

NSN 5925-00-628-7771

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
006287771

Detail Specifications

Body Style:
Rectangular dimensional envelope
Overall Length:
4.500 inches
Overall Height:
3.875 inches
Overall Width:
4.000 inches
Unthreaded Mounting Hole Diameter:
Between 0.312 inches and 0.375 inches
Pole Quantity:
3
Mounting Facility Type And Quantity:
6 unthreaded hole
Features Provided:
Adjustable trip release
Maximum Continuous Load Current Rating Per Pole:
75.0 amperes ac all locations
Operating Voltage Type And Rating Per Pole In Volts:
500.0 ac all locations
Circuit Protection Type:
Overcurrent all locations
Trip Release Method:
Thermal-magnetic all locations
Trip Release Characteristic:
Instantaneous all locations and time delay all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent:
105.0 all locations
Adjustable Trip Setting Current Range Per Pole In Amps:
+900.0/+1050.0 ac all locations
Trip Delay Time In Seconds Per Rated Continuous Current:
25.000 at 600 pct all locations
Trip Release Ambient Tempurature Rating:
50.0 degrees celsius all locations
Frequency In Hertz:
60.0 all locations
Terminal Type And Quantity:
6 screw
NSN:
5925-00-628-7771
Item Name:
Circuit Breaker Tripping Unit
Cage Code:
15605

Manufacturer Part Numbers

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
ETN5252
Cage Code:
30086
RNCC:
3
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:

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Catalog Drilldown
--- Electrical And Electronic Equipment Components
------ Circuit Breakers
--------- Circuit Breaker Trippers
------------ P/N 976-1-1X21PC1C

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Last Updated: 08/13/2025