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Square D FAL34050-1021 - 50A 3 Pole Molded Case Circuit Breaker
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Square D FAL34050-1021 Molded Case Circuit Breaker

  • 50A
  • 3 Pole
  • Unit Mount
Square D FAL34050-1021
Molded Case Circuit Breaker
Brand Square D
SKU FAL34050-1021
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  • 50A
  • 3 Pole
  • Unit Mount

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Square D FAL34050-1021 - 50A 3 Pole Molded Case Circuit Breaker

Square D FAL34050-1021 - 50A 3 Pole Molded Case Circuit Breaker

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$1,222.45 Check Stock

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Description SpecificationsProduct FAQs SuperClub Warranties Shipping Reviews 5.0 (39)

Description

Part of the legacy F-frame series, the Square D FAL34050-1021 is a 3-pole, 50A molded case circuit breaker designed for commercial and industrial applications. It features a factory-installed 120-240VAC shunt trip mechanism for remote tripping capabilities. This unit-mount breaker installs into compatible Square D enclosures, switchboards, and panelboards. For modern upgrades, this legacy component is replaced by the PowerPact HDL36050.

Specifications

Key specifications
Brand Square D
Part Number FAL34050-1021
Series FAL
Amperage 50A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 250VDC
Phase 3
AIC Rating 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC
Fit and installation
Frame Type FAL
Terminal Type Lugs
For Use With Square D Enclosures, Switchboards, Panelboards
Wire Gauge 14-1/0 AWG (Cu), 12-1/0 AWG (Al)
Max Wire 1/0 AWG
Min Wire 14 AWG (Cu) / 12 AWG (Al)
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 Auxiliary Switch, Alarm Switch, Padlock Attachment
Accessories Shunt Trip (120-240VAC), Lugs (AL100FA)
Standards UL 489, CSA C22.2 No. 5, NEMA AB 1, HACR Rated
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Visual Trip Indicator, HID Rated

Product FAQs

8 answers
What does the -1021 suffix indicate on the FAL34050-1021 circuit breaker?

The -1021 suffix designates that this breaker includes a factory-installed 120/240VAC shunt trip mechanism, which allows for remote tripping of the circuit breaker.

What is the modern replacement for the legacy Square D FAL34050-1021?

The legacy F-Frame FAL34050 series is typically replaced by the modern PowerPact H-Frame series, such as the HDL36050. If your application still requires remote tripping, you must ensure the replacement breaker is ordered with a compatible 120/240VAC shunt trip accessory.

What size wire is accepted by the lugs on the FAL34050-1021?

The standard line and load lugs accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.

What type of equipment is the FAL34050-1021 compatible with?

This unit-mount circuit breaker is designed for installation in compatible Square D enclosures, switchboards, and panelboards that accommodate legacy F-Frame breakers.

Can the FAL34050-1021 be used in DC applications?

Yes, this breaker is rated for use in DC systems up to 250VDC, providing an interrupting capacity of 10kAIC at that voltage.

Does the FAL34050-1021 plug directly onto a panelboard bus?

No, this is a feed-thru circuit breaker. It mounts individually and requires hardwired connections at both the line and load side lugs, rather than plugging or bolting directly onto a busbar.

Can the trip curve be adjusted on the FAL34050-1021?

No, this breaker uses a standard thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip settings. It does not offer adjustable trip dials.

How is the shunt trip on the FAL34050-1021 typically utilized for safety?

The integrated 120/240VAC shunt trip allows the breaker to be opened remotely by an external voltage signal. This is commonly wired to emergency stop pushbuttons, fire suppression systems, or safety interlocks to quickly drop power to the load during an emergency.

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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?