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Square D FH361002100J Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • I-Line
Square D FH361002100J
Molded Case Circuit Breaker
Brand Square D
SKU FH361002100J
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  • 100A
  • 3 Pole
  • I-Line

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Square D FH361002100J - 100A 3 Pole Molded Case Circuit Breaker

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$294.00 No Stock

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Description

Designed for specialized industrial applications, the Square D FH361002100J is a 3-pole, 100A molded case circuit breaker. It provides dependable thermal-magnetic protection within legacy networks. This unit mounts into standard I-Line panelboards. When transitioning to modern equipment, the HGA36100 serves as the replacement, though it requires an additional alarm switch to match original functionality. It delivers 25kAIC at 480VAC and features a 2100A high magnetic trip setting.

Specifications

Key specifications
Brand Square D
Part Number FH361002100J
Series FH
Amperage 100A
Poles 3
Mounting Style I-Line
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Square D I-Line Panelboards
Wire Gauge 14-1/0 AWG (Cu), 12-1/0 AWG (Al)
Max Wire 1/0 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release
Accessories Load Side Lugs (AL100FA)
Standards CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489
Approval CE, CSA, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Contacts Closed for Shipment

Product FAQs

7 answers
What type of panelboard is required for the FH361002100J?

This breaker features an I-Line mounting style and is designed specifically for Square D I-Line panelboards and switchboards. It cannot be installed in standard unit-mount enclosures or load centers.

Is the FH361002100J an F-Frame breaker?

Yes, this breaker belongs to the legacy Square D F-Frame family. It shares the same physical dimensions as other F-Frame breakers, making it a direct fit for existing I-Line spaces designed for this footprint.

What does the 2100 suffix indicate on the FH361002100J catalog number?

The 2100 suffix designates a factory-installed alarm switch. This internal accessory changes state when the breaker trips, allowing for remote fault indication in control systems.

What is the modern PowerPact replacement for the FH361002100J?

The PowerPact H-Frame series, specifically the HGA36100, is the modern equivalent for this legacy F-Frame breaker. Because the original unit includes a factory-installed alarm switch, you will need to add an auxiliary alarm switch module to the PowerPact replacement to duplicate the original functionality.

What are the acceptable wire gauges for the FH361002100J terminals?

The factory lugs accept 14 AWG to 1/0 AWG copper conductors, or 12 AWG to 1/0 AWG aluminum conductors. Always verify that your selected wire size aligns with the 100A continuous current rating and local electrical codes.

Can the FH361002100J be used in DC circuits?

Yes, this thermal-magnetic breaker is rated for DC applications up to 250V DC, where it provides a 10kA interrupting capacity. It is also rated for AC systems up to 600V AC.

Are the thermal and magnetic trip points adjustable on this breaker?

No, the FH361002100J utilizes a standard LI (Long-Time, Instantaneous) thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It does not feature the adjustable dials found on electronic trip units.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 10 reviews
Rating
Ratings
10 reviews
  • DM
    Donald M.
    Verified Buyer
    Reviewing
    Square D FH36030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/18/26
    Excellent Service

    The support team with Super Breakers went over and beyond in ensuring the breakers were on site for an emergency repair…

    CAVA Construction Manager very pleased!

    Donald Mayo

    Mayo Electric

  • PH
    payton h.
    Verified Buyer
    Reviewing
    Square D FH36090 - 90A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/17/26
    great

    great straightforward company has almost everything you could ever need in stock

  • SG
    Shawn G.
    Verified Buyer
    Reviewing
    Square D FH36020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/20/26
    Thanks !

    Excellent service & gear per usual !

    Thanks !

  • E
    Earnest
    Verified Buyer
    Reviewing
    Square D FH36060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    10/3/25
    Fast delivery and quality

    The breaker was in great condition.

  • JP
    Jason P.
    Verified Buyer
    Reviewing
    Square D FH36050 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/5/25
    Breakers

    Order was placed and they came in on time in good condition