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Square D FY14020B Molded Case Circuit Breaker

  • 20A
  • 1 Pole
  • I-Line
Square D FY14020B
Molded Case Circuit Breaker
Brand Square D
SKU FY14020B
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  • 20A
  • 1 Pole
  • I-Line

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Square D FY14020B 1 Pole Circuit Breaker

Square D FY14020B - 20A 1 Pole Molded Case Circuit Breaker

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$64.99 In Stock

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Description

Part of the legacy F-frame series, this 1-pole MCCB provides robust long-time and instantaneous trip functions for 277VAC systems. It features a Phase B connection and an 18kAIC interrupt rating for commercial environments. Designed to install into Square D I-Line panelboards, the breaker utilizes a plug-on jaw connection. For modern upgrades, this unit is replaced by the PowerPacT BDA140203. Equipped with a Visi-Trip indicator, the unit carries both HACR and SWD ratings.

Specifications

Key specifications
Brand Square D
Part Number FY14020B-R
Series FY
Amperage 20A
Poles 1
Mounting Style I-Line
Voltage 277VAC, 125VDC
Phase 1
AIC Rating 18kA @ 277VAC, 10kA @ 125VDC
Fit and installation
Frame Type FY
Terminal Type Lugs
For Use With Square D I-Line Panelboards and Switchboards
Wire Gauge 14-4 AWG (Cu), 12-4 AWG (Al)
Max Wire 4 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
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment
Accessories Phase B Connection (Factory Configured)
Standards CSA C22.2 No. 5, NEMA AB-1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, SWD Rated, Phase B Connection, Visual Trip Indicator

Product FAQs

6 answers
Can the FY14020B be installed in standard QO or NQ panelboards?

No. The FY14020B features an I-Line style plug-on connection. It is engineered exclusively for Square D I-Line panelboards and switchboards, and it will not fit residential or standard commercial bolt-on or plug-on load centers.

What does the B suffix in the FY14020B catalog number represent?

The B suffix specifies the factory-configured phase connection. This 1-pole breaker is designed with a plug-on jaw that connects exclusively to the B-phase bus in an I-Line panelboard.

Is there a modern equivalent or replacement for the legacy FY14020B?

Yes. The legacy F-frame FY series has been discontinued by Schneider Electric. The direct modern replacement is the PowerPact B-frame breaker, catalog number BDA140203, which matches the 277V rating, I-Line mounting, and B-phase connection.

Does the FY14020B carry an SWD rating for lighting circuits?

Yes. This 1-pole breaker carries a Switch-Duty (SWD) rating, meaning it is UL approved for regularly switching fluorescent lighting loads without accelerating the wear of the breaker mechanisms.

Is the FY14020B circuit breaker HACR rated?

Yes. The breaker is HACR rated, certifying it for use as an overcurrent protection device for compatible heating, air conditioning, and refrigeration equipment.

How is the FY14020B terminated on the line and load sides?

The line side connects directly to the panelboard bus via a shrouded I-Line plug-on jaw. The load side utilizes a mechanical lug designed to accept 14 to 4 AWG copper or 12 to 4 AWG aluminum conductors.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 5 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
6 reviews
  • KW
    Kenneth W.
    Verified Buyer
    Reviewing
    Square D FY14020C - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/15/25
    I line breakers

    20/2 I line

    And the

    20/1 I line replacement for damaged breaker

    Worked fine

  • PE
    Paul E.
    Flag of United States
    Reviewing
    Square D FY14020B - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/7/23
    Great service and pricing

    Great service and pricing

  • SM
    Sam M.
    Flag of United States
    Reviewing
    Square D FY14015B - 15A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    6/20/19
    Sam Mufti

    Sale person was professional . Got breakers on time.

  • RC
    Ric C.
    Flag of United States
    Reviewing
    Square D FY14020B - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/2/19
    Very pleased with price &

    Very pleased with price & delivery.

  • RS
    Robin S.
    Flag of United States
    Reviewing
    Square D FY14020A - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/16/19
    Great deal

    Good pricing and great customer service