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Square D FAL340451380 Molded Case Circuit Breaker

  • 45A
  • 3 Pole
  • Unit Mount
Square D FAL340451380
Molded Case Circuit Breaker
Brand Square D
SKU FAL340451380
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  • 45A
  • 3 Pole
  • Unit Mount

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Square D FAL340451380 - 45A 3 Pole Molded Case Circuit Breaker

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$313.21 No Stock

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Description SpecificationsProduct FAQs SuperClub Warranties Shipping Reviews 5.0 (39)

Description

Built to handle demanding electrical loads, this 45A, 3-pole MCCB delivers robust thermal-magnetic protection for industrial facilities. The Square D FAL340451380 operates at up to 480VAC with an 18kAIC interrupting capacity. Designed for unit-mount configurations, it fits into Square D control panels and switchboards. For modernization projects, this legacy F-Frame breaker is replaced by the HDL36045, which requires equivalent accessory add-ons.

Specifications

Key specifications
Brand Square D
Part Number FAL340451380
Series FAL
Amperage 45A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 250VDC
Phase 3
AIC Rating 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Square D Enclosures, Switchboards, Control Panels
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 Undervoltage Release, Alarm Switch
Accessories Shunt Trip (120-240VAC), Auxiliary Switch (1A/1B), Lugs
Standards CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Visual Trip Indicator

Product FAQs

7 answers
What does the 1380 suffix mean on the FAL340451380?

The 1380 suffix indicates the breaker includes a factory-installed 120/240VAC shunt trip and a 1A/1B auxiliary switch. This configuration allows for remote tripping and circuit status monitoring in control panels.

How is the FAL340451380 installed in an electrical system?

This is a unit-mount, feed-thru circuit breaker. It bolts directly to the backpan of Square D enclosures, switchboards, or control panels rather than plugging onto a panelboard busbar.

What wire sizes are compatible with the lugs on this breaker?

The factory-installed line and load lugs accept 14 to 1/0 AWG copper (Cu) wire or 12 to 1/0 AWG aluminum (Al) wire.

What is the modern replacement for the legacy FAL340451380?

The FAL series is a legacy F-Frame breaker. For new installations or modernization projects, it is typically replaced by the PowerPact H-Frame series, such as the HDL36045. Equivalent shunt trip and auxiliary switch accessories must be added to the PowerPact breaker to match the original 1380 configuration.

Can the FAL340451380 be used in direct current (DC) applications?

Yes, this thermal-magnetic breaker is rated for DC systems up to 250VDC, where it provides a 10kA interrupting capacity.

Are the trip settings adjustable on this 45A breaker?

No, the FAL340451380 features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions.

What enclosures are compatible with this F-Frame breaker?

It is designed for use in standard Square D enclosures, switchboards, and industrial control panels that accept unit-mount legacy F-Frame circuit breakers.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 39 reviews
Reviews Summary
Customers say this circuit breaker arrives in excellent condition and works as expected. The product performs flawlessly and functions reliably. Many reviews highlight fast shipping, competitive pricing, and quick delivery times. Users appreciate the availability of refurbished and obsolete models. The parts arrive well-packed and in like-new condition. Common feedback addresses excellent communication and straightforward ordering. Overall, customers report satisfaction with product quality, value, and prompt service fulfillment.
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39 reviews
  • PC
    Pierre C.
    Verified Buyer
    Reviewing
    Square D FAL3603015M - 30A 3 Pole Motor Circuit Protector
    I recommend this product
    Rated 5 out of 5 stars
    9/15/26
    Great service!!!

    Bought this to replace the faulty one. Shipped overnight and arrived at noon as promised. Works as new. Very happy with this. Awesome help from the staff. Definitely my go to place now.

    Thank you.

    Was this helpful?
  • MB
    Michael B.
    Verified Buyer
    Reviewing
    Square D FAL32030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/13/26
    Great product

    This item worked as expected and is good quality. SuperBreakers did a great job with communication and delivery.

    Was this helpful?
  • ZB
    Zachary B.
    Verified Buyer
    Reviewing
    Square D FAL36040 - 40A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/23/26
    Perfect

    Exactly what we needed and worked flawlessly. Thanks

    Was this helpful?
  • JR
    John R.
    Verified Buyer
    Reviewing
    Square D FAL36100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/29/26
    Circuit Breaker

    The breaker was in "like new" condition and well packed for shipping. Excellent value overall!

    Was this helpful?
  • RF
    Ron F.
    Verified Buyer
    Reviewing
    Square D FAL340801021 - 80A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    5/13/26
    Square D FAL340801021 - 80A 3 Pole Molded Case Circuit Breaker

    As usual SB has the best price and delivery was spot on!

    Was this helpful?