Square D QDA221754 I-Line Circuit Breaker – 175A – 2 Pole – 25kAIC – Thermal Magnetic – Q-Frame – 240VAC – I-Line Mount

The Square D QDA221754 is a molded case circuit breaker designed for industrial and commercial power distribution systems. Built on the Q-Frame platform, it provides reliable overcurrent protection with long-time and instantaneous (LI) trip functionality. It is specifically engineered for use in Square D I-Line panelboards and switchboards, offering plug-on installation and high interrupting capacity for demanding electrical environments.

Electrical Ratings

• Current Rating: 175 A
• Voltage Rating: 208Y/120 VAC, 240 VAC
• Frequency: 50/60 Hz
• Phase: 1 Phase (2-pole configuration)
• Interrupting Rating: 25 kA @ 240 VAC, 25 kA @ 208Y/120 VAC
• 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 operation

Configuration and Function

• Series: QDA
• Model: QDA221754
• Frame Type: Q-Frame
• Mounting Style: I-Line plug-on
• Connection Type: Lug connection with BC phase configuration
• 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: Lugs
• Durable industrial-grade construction
• Designed for fast plug-on installation in I-Line systems
• Suitable for retrofit and replacement of legacy Q-series breakers

Standards and Certifications

• UL 489 Listed
• CSA Certified
• IEC 60947-2 compliant
• NOM certified
• CE marked
• 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.