Square D FA26020BC Circuit Breaker – 2 Pole, 20A, 600V I-Line Plug-In

Square D FA26020BC – 20 Amp 2-Pole I-Line Plug-In Circuit Breaker, 600V

The Square D FA26020BC is a heavy-duty thermal-magnetic molded case circuit breaker engineered for demanding commercial and industrial power distribution systems. Rated at 20 Amps, 2 Poles, and 600 Volt AC / 250 Volt DC, this breaker delivers reliable overcurrent and short-circuit protection in I-Line panelboard applications.

Key Specifications

• Part Number: FA26020BC
• Manufacturer: Square D (Schneider Electric)
• Series: FA (Compact Molded Case)
• Amperage: 20A
• Number of Poles: 2
• Voltage Rating: 600V AC / 250V DC
• Mounting Type: I-Line Plug-In
• Interrupting Capacity: 25kAIC @ 240V | 18kAIC @ 480V | 14kAIC @ 600V
• Trip Function: Long-Time & Instantaneous (Thermal-Magnetic)
• Frame: Molded Case
• Condition: Used / Tested

What Is the Square D FA26020BC?

The FA26020BC belongs to Square D's FA-frame series — compact, high-performance molded case circuit breakers designed for plug-in installation into Square D I-Line panelboards and switchboards. The thermal-magnetic trip mechanism provides two layers of protection: thermal elements guard against sustained overloads, while magnetic elements respond instantly to short-circuit faults — all without needing an external trip unit.

I-Line Plug-In Mounting – What It Means

I-Line is Square D's proprietary plug-in bus system, allowing breakers to be installed and removed quickly without rewiring the bus. This design reduces installation time and simplifies field maintenance, making the FA26020BC ideal for use in Square D I-Line panels such as the NF, PL, and HCM series enclosures.

Common Applications

• Commercial and industrial power distribution panels
• Motor branch circuit protection (up to applicable NEC requirements)
• HVAC equipment and lighting circuits at 208V–600V
• Retrofit and replacement in existing Square D I-Line switchboards
• MCC (Motor Control Center) feeder protection

Why Buy from Alpha Brokers & Controls?

At Alpha Brokers & Controls, we specialize in quality surplus and refurbished electrical equipment from trusted brands like Square D / Schneider Electric. Every unit is inspected and verified before shipping. Buying surplus doesn't mean compromising on quality — it means getting industrial-grade components at a fraction of the list price.

• ✅ Inspected and tested before shipping
• ✅ Genuine Square D / Schneider Electric product
• ✅ Fast shipping on in-stock items
• ✅ Ideal for MRO, panel builders, and electrical contractors

Frequently Asked Questions

Is the FA26020BC compatible with Square D I-Line panels?
Yes. The FA26020BC is designed specifically for I-Line plug-in panelboards and switchboards from Square D, including NF-frame and HCM-series enclosures.

What is the interrupting rating of the FA26020BC?
The FA26020BC has an interrupting rating of 25kAIC at 240V, 18kAIC at 480V, and 14kAIC at 600V.

Can this breaker be used on a 480V system?
Yes. The FA26020BC is rated for 600V AC, making it suitable for 240V, 480V, and 600V AC systems.

Is this a new or used unit?
This unit is sold as used/surplus condition, inspected prior to listing. It is a genuine Square D product.

What does "thermal-magnetic" mean for this breaker?
Thermal-magnetic refers to the dual-element trip mechanism: the thermal element trips the breaker on sustained overloads, and the magnetic element provides instantaneous trip protection during short circuits.