Square D FA26015AC Circuit Breaker - 2 Pole, 15 Amp, 600V I-Line Plug-In

Square D FA26015AC — 2 Pole I-Line Plug-In Circuit Breaker, 15A / 600V

The Square D FA26015AC is a thermal-magnetic, molded case circuit breaker engineered for reliable overcurrent protection in demanding industrial and commercial electrical systems. Rated at 15 Amps, 2 Pole, 600VAC / 250VDC, it delivers consistent performance across a wide voltage range with I-Line plug-in convenience.

Key Specifications

• Part Number: FA26015AC
• Brand: Square D (Schneider Electric)
• Current Rating: 15 Amps
• Poles: 2 Pole
• Voltage Rating: 600VAC / 250VDC
• Mounting Type: I-Line Plug-In
• Trip Type: Thermal-Magnetic (Long Time & Instantaneous)
• Interrupting Rating: 25kAIC @ 240V | 18kAIC @ 480V | 14kAIC @ 600V
• Frame: FA Frame (Molded Case)
• Condition: Used / Reconditioned

What Is the Square D FA26015AC?

The FA26015AC is part of Square D's FA-frame series of molded case circuit breakers. Designed for panelboard and switchboard applications, these breakers use thermal-magnetic trip technology to protect against both overloads (long-time delay) and short circuits (instantaneous trip). The I-Line plug-in design allows for fast, tool-free installation into compatible Square D I-Line panelboards.

I-Line Plug-In Mounting — Fast, Secure, Compatible

The I-Line system is Square D's proprietary plug-in bus design, widely used in industrial facilities, data centers, and commercial buildings. The FA26015AC plugs directly into Square D I-Line panelboards (such as the NF, PF, and HCM series), eliminating the need for separate connection hardware and reducing installation time significantly.

Applications

• Industrial control panels and motor branch circuits
• Commercial electrical distribution systems
• HVAC, lighting, and equipment branch protection
• MCC (Motor Control Center) feeder and branch circuits
• Replacement breaker for existing Square D I-Line panelboards

Why Choose a Used Square D FA26015AC?

Sourcing a used or surplus FA26015AC from a trusted supplier like Alpha Brokers & Controls is a cost-effective way to maintain aging electrical infrastructure without the lead times associated with new components. Square D breakers are known for their durability and long service life — making quality used units a reliable option for MRO (maintenance, repair & operations) procurement.

Frequently Asked Questions

What does FA26015AC mean?
In Square D's part number system: FA = FA frame series, 2 = 2 pole, 6 = 600V rating class, 015 = 15 Amp rating, AC = I-Line plug-in configuration.

Is the FA26015AC compatible with Square D I-Line panels?
Yes. The FA26015AC uses Square D's I-Line plug-in bus design and is compatible with all standard Square D I-Line panelboards.

What is the interrupting rating of the FA26015AC?
25kAIC at 240V, 18kAIC at 480V, and 14kAIC at 600V.

What is the difference between the FA and QO series from Square D?
The FA frame is an industrial-grade molded case breaker suited for higher voltage applications (up to 600V) and I-Line systems. The QO series is a residential/light commercial plug-on breaker for QO load centers.