#976-1-1X21PC1B Circuit Breaker Tripping Unit | Circuit Breakers

976-1-1X21PC1B

Circuit Breaker Tripper

NSN 5925-00-628-7769

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
006287769

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:
50.0 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:
+600.0/+700.0 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:
5925-00-628-7769
Item Name:
Circuit Breaker Tripping Unit
Cage Code:
27192

Manufacturer Part Numbers

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
ETN5250
Cage Code:
30086
RNCC:
5
RNVC:
9
RNAAC:
TX
Status:
A
MSDS:
SADC:

  We Guarantee with Every Order

  •   100% Genuine Manufacturers Parts
  •   Every Product thoroughly Inspected
  •   Sales Record Retention of 7 years
  •   Fast Delivery
  •   HAZMAT Certified
  •   Global Shipping

Pricing & Availability

Submit this form for current pricing and availability quote on part number 976-1-1x21pc1b and/or cross reference parts.
Part / NSN:
Qty:
Your Email:
Phone:
Ref. / PO #:
Company:

We do not share or sell your information to anyone.
Privacy | Terms

Catalog Drilldown
--- Electrical And Electronic Equipment Components
------ Circuit Breakers
--------- Circuit Breaker Trippers
------------ P/N 976-1-1X21PC1B

New Products Recently updated in circuit breakers

  • 27-10388-1 circuit breaker
    NSN 5925-00-166-3440

    Multipole-single actuator type body style, 0.250 inches bushing length, 1.312 inches body length, 2.140 inches body width, 2.156 inches body height

  • 1536-007-10 circuit breaker
    NSN 5925-00-166-3440

    Multipole-single actuator type body style, 0.250 inches bushing length, 1.312 inches body length, 2.140 inches body width, 2.156 inches body height

  • 314C920G21 circuit breaker
    NSN 5925-00-165-8693

    3 pole quantity, 150.0 amperes ac all locations maximum continuous load current rating per pole, 600.0 ac all locations operating voltage type and rating per pole in volts

  • KA3150 circuit breaker
    NSN 5925-00-165-8693

    3 pole quantity, 150.0 amperes ac all locations maximum continuous load current rating per pole, 600.0 ac all locations operating voltage type and rating per pole in volts

  • 504C336G21 circuit breaker
    NSN 5925-00-165-8693

    3 pole quantity, 150.0 amperes ac all locations maximum continuous load current rating per pole, 600.0 ac all locations operating voltage type and rating per pole in volts

  • BAB1015 circuit breaker
    NSN 5925-00-165-8694

    1 pole quantity, 15.0 amperes ac single location maximum continuous load current rating per pole, 240.0 ac single location operating voltage type and rating per pole in volts


Best-Selling Products A collection of our most popular products

Last Updated: 08/13/2025