Square D QDA222251 I-Line Circuit Breaker – 225A – 2 Pole – 25kAIC – Thermal Magnetic – Q-Frame – 240VAC – I-Line Mount

The Square D QDA222251 is a molded case circuit breaker designed for industrial and commercial power distribution systems. It uses thermal magnetic (LI) trip technology to provide reliable overload and short-circuit protection. Built for Square D I-Line panelboards and switchboards, it offers plug-on installation and high interrupting capacity suitable for demanding electrical environments.

Electrical Ratings

• Current Rating: 225 A
• Voltage Rating: 240 VAC at 50/60 Hz
• Phase: 1 Phase (2-pole configuration)
• Interrupting Rating: 25 kA @ 240 VAC (UL/CSA), 10 kA @ 240 VAC (IEC)
• Application: Industrial and commercial power distribution

Protection and Function

• Device Type: Molded case circuit breaker
• Trip Technology: Thermal magnetic
• Trip Function: Long-time and instantaneous (LI)
• Trip Adjustability: Fixed thermal and fixed magnetic
• Safety Features:
  • Visual trip indicator
  • Trip-free mechanism
  • Quick-make / quick-break operation
  • Common trip functionality

Configuration and Function

• Series: QDA
• Model: QDA222251
• Frame Type: Q-Frame
• Mounting Style: Plug-on I-Line system
• Connection Type: AB phase connection
• Used With: Square D I-Line panelboards and switchboards
• Sub-category: Panelboard circuit breaker
• Application: Electrical power distribution protection

Mechanical and Physical Characteristics

• Compact Q-frame molded case design
• Wire Range: 4 AWG to 300 kcmil (Aluminum/Copper)
• Terminal Type: Lug connection
• Designed for quick plug-on installation in I-Line systems
• Standardized industrial dimensions for panelboard compatibility
• Durable construction for heavy-duty environments

Standards and Certifications

• UL Listed
• CSA Certified
• IEC compliant
• NOM certified
• RoHS compliant
• HACR rated

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.