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Eaton / Cutler-Hammer HJD3100 Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • Unit Mount
Eaton / Cutler-Hammer HJD3100
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU HJD3100
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  • 100A
  • 3 Pole
  • Unit Mount

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HJD3100

Eaton / Cutler-Hammer HJD3100 - 100A 3 Pole Molded Case Circuit Breaker

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$2,709.00 In Stock

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Description

Part of the Series C family, the HJD3100 is a 3-pole molded case circuit breaker built for industrial power distribution. It ensures consistent overcurrent protection. This 100A unit-mount breaker fits Eaton Series C panelboards, switchboards, and motor control centers. It easily replaces older Cutler-Hammer J-frame installations. Equipped with a fixed thermal-magnetic trip unit, it boasts a 65 kAIC capacity at 480VAC. TA250KB line and load lugs are included to simplify wiring.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number HJD3100
Series HJD
Amperage 100A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Eaton Series C Panelboards, Switchboards, Motor Control Centers
Wire Gauge 4 AWG - 350 kcmil (Al/Cu)
Max Wire 350 kcmil
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Line and Load Lugs Included (TA250KB)
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, High Interrupting Capacity

Product FAQs

6 answers
What equipment is compatible with the HJD3100 circuit breaker?

This J-frame breaker is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers.

What is the difference between the Eaton JD3100 and HJD3100?

The HJD3100 features a higher interrupting capacity. The standard JD3100 is rated for 35kA at 480VAC, whereas the high-interrupting HJD3100 is rated for 65kA at 480VAC.

What lugs are included with the HJD3100?

This breaker comes standard with TA250KB line and load lugs. These terminals accept 4 AWG to 350 kcmil aluminum or copper conductors.

Is the trip unit on the HJD3100 adjustable?

Yes, it features a thermal-magnetic trip unit with fixed thermal protection and an adjustable magnetic short-circuit pickup. For this 100A model, the magnetic trip can be adjusted from 500A to 1000A (5 to 10 times the continuous rating).

Can the HJD3100 be reverse fed?

Yes, this Series C breaker is rated for reverse feed applications, allowing flexibility in wiring the line and load connections.

Can the HJD3100 replace older Westinghouse J-frame breakers?

Yes, it is a direct replacement for legacy Westinghouse and Cutler-Hammer Series C J-frame breakers that require a 100A, 3-pole configuration with high interrupting capacity.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
1 review
  • JW
    Joe W.
    Verified Buyer
    Reviewing
    Siemens HJD63F400 Circuit Breaker Frame
    I recommend this product
    Rated 5 out of 5 stars
    7/16/26
    Exactly what we needed, delivered complete and on time.

    SuperBreakers had exactly what we needed (Breaker, Trip Unit, lug kits) - the breaker came quickly and with trip unit installed (ordered as a separate item) making integration quick and easy.

    Solid phone support and communication re: tracking - overall a very good purchasing experience.