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Square D FCP34100 Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • Bolt-On
Square D FCP34100
Molded Case Circuit Breaker
Brand Square D
SKU FCP34100
Select Item Condition
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  • 100A
  • 3 Pole
  • Bolt-On

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Square D FCP34100 - 100A 3 Pole Molded Case Circuit Breaker

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$1,020.10 Check Stock

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Description

Built for commercial and industrial applications, the Square D FCP34100 3-pole, 100A MCCB provides reliable thermal magnetic protection. This F-frame breaker features a bolt-on mounting style to install into Square D panelboards, switchboards, and motor control centers. It serves as a legacy component replaced by the HJL36100. Rated for 65 kAIC at 480VAC, it ensures superior fault clearing. The unit is HACR rated and includes line and load side lugs.

Specifications

Key specifications
Brand Square D
Part Number FCP34100
Series FCP
Amperage 100A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480VAC
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC
Fit and installation
Frame Type FCL
Terminal Type Lugs
For Use With Square D Panelboards, Switchboards, Motor Control Centers
Wire Gauge 14-1/0 AWG (Cu/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, Alarm Switch
Accessories Line and Load Side Lugs Included
Standards CSA C22.2 No. 5, UL 489, NEMA AB-1, W-C-375B/GEN
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip

Product FAQs

7 answers
What types of enclosures and panels are compatible with the FCP34100?

This bolt-on F-frame circuit breaker is designed for use in Square D panelboards, switchboards, and motor control centers that accept legacy FCL or F-frame breakers.

What wire sizes and materials are accepted by the lugs on this breaker?

The line and load side lugs accept 14 AWG to 1/0 AWG wire. They are rated for both copper and aluminum conductors.

What does the LI trip function indicate on the FCP34100?

The LI designation means the thermal magnetic trip unit provides Long-Time protection for sustained overloads and Instantaneous protection for short circuits. Both the thermal and magnetic trip points are fixed.

Is the Square D FCP34100 still in active production?

The FCP34100 is a legacy F-frame circuit breaker. For new installations or direct upgrades, Schneider Electric typically recommends the PowerPact H-frame series, such as the HJL36100, as a modern replacement.

Can this breaker be used in 240V systems?

Yes. While it has a maximum voltage rating of 480V AC with a 65kA interrupting capacity, it is fully rated for 240V AC systems, where it provides a higher interrupting rating of 100kA.

Does this breaker mount onto an I-Line bus?

No. The FCP34100 features a bolt-on connection type. It is not compatible with I-Line plug-on panelboards, which require breakers with specialized I-Line jaw connectors.

Does this breaker provide ground fault or equipment protection?

No. The FCP34100 is a standard thermal magnetic breaker with LI functions. It does not include ground fault or equipment protection features.

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