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Square D FY12020C Molded Case Circuit Breaker

  • 20A
  • 1 Pole
  • I-Line
Square D FY12020C
Molded Case Circuit Breaker
Brand Square D
SKU FY12020C
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  • 20A
  • 1 Pole
  • I-Line

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Square D FY12020C - 20A 1 Pole Molded Case Circuit Breaker

Square D FY12020C - 20A 1 Pole Molded Case Circuit Breaker

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$29.85 No Stock

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Description

Engineered for commercial power distribution, this 20A molded case circuit breaker delivers reliable thermal-magnetic protection. Designed to install into Square D I-Line panelboards, this legacy F-Frame breaker utilizes a plug-in mounting system. For modern upgrades, it is replaced by the BDA140205 model. Rated at 18kAIC at 120VAC, it includes a factory-configured Phase C connection and a Visi-Trip indicator. It is SWD and HACR rated for versatile switching and HVAC applications.

Specifications

Key specifications
Brand Square D
Part Number FY12020C
Series FY
Amperage 20A
Poles 1
Mounting Style I-Line
Voltage 120VAC
Phase 1
AIC Rating 18kA @ 120VAC
Fit and installation
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 C 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 C Connection, Visual Trip Indicator

Product FAQs

5 answers
Can I install the FY12020C in a standard Square D QO or Homeline load center?

No. The FY12020C features an I-Line plug-in mounting style, which is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit in QO, Homeline, or NQOD residential and light commercial load centers.

What does the 'C' in the FY12020C catalog number indicate?

In Square D I-Line nomenclature, the trailing letter on a 1-pole breaker indicates the specific phase connection on the panelboard bus. The 'C' signifies that this breaker is factory-configured with the jaw positioned to connect to Phase C of the I-Line bus.

Does this breaker require a separate mounting bracket or strap for installation?

No. The I-Line mounting system is designed so the breaker plugs directly into the panelboard bus stack. The mechanical mounting and electrical connections are made simultaneously without the need for external mounting brackets or bus straps.

What is the modern replacement for the legacy FY12020C breaker?

The FY frame is a legacy series that has been largely phased out. When upgrading or replacing this unit in an I-Line panel, electricians typically cross-reference to the newer Square D PowerPact B-frame (such as the BDA series) or FA frame breakers that match the 20A, 1-pole, 120V, and 18kAIC requirements.

Can the trip settings on the FY12020C be adjusted in the field?

No. This breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip points are factory-calibrated and cannot be modified by the user.

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