Square D QBA221751 PowerPact Q Molded Case Circuit Breaker – 175A – 2 Pole – Thermal Magnetic – I-Line Plug-On – 240VAC – 10kAIC

The Square D QBA221751 is a 2-pole PowerPact Q molded case circuit breaker designed for power distribution applications in I-Line panelboards and switchboards. Rated at 175 amps and 240VAC, it provides dependable thermal-magnetic protection against overloads and short circuits. Featuring a plug-on I-Line mounting configuration with an AB (Red-Yellow) phase connection, this compact breaker is ideal for commercial and industrial electrical distribution systems requiring reliable circuit protection.

Electrical Ratings

• Current Rating: 175 A
• Voltage Rating: 240 VAC, 50/60 Hz
• Poles: 2 Pole
• Phase: Single Phase / Two-Phase Connection
• Phase Connection Type: AB (Red-Yellow)
• Interrupting Rating: 10 kA @ 240 VAC
• Trip Setting: 1200–2400 A
• Application: Power Distribution

Protection and Function

• Tripping Method: Thermal Magnetic
• Protection Functions:
  • Overload Protection
  • Short-Circuit Protection
• Circuit Breaker Type: Molded Case Circuit Breaker
• Continuous Current Rating: 80%
• Non-Interchangeable Trip Design

Configuration and Function

• Series: PowerPact™ Q
• Catalog Number: QBA221751
• Model: QB
• Frame Type: Q Frame
• Mounting Type: Plug-On (I-Line)
• Connection Type: I-Line Connection, Line Lug Load
• Used On:
  • Class 650 I-Line Panelboards
  • Class 734 I-Line Panelboards
  • Class 820 I-Line Switchboards
• Category: 2-Pole Non-Interchangeable Trip Thermal Magnetic Circuit Breaker

Mechanical and Physical Characteristics

• Dimensions (W × D × H): 3.00 in × 3.93 in × 6.47 in
• Terminal Wire Size: 4 AWG to 300 kcmil Aluminum/Copper
• Ambient Operating Temperature: 104°F to 158°F (40°C to 70°C)
• Compact molded case construction
• Plug-on design for quick installation and replacement

Standards and Certifications

• UL Listed
• CSA Certified
• NOM Compliant
• IEC Compliant
• RoHS Compliant
• Manufacturer: Schneider Electric / Square D
• UNSPSC: 39121601

Features

• 175A, 2-pole molded case circuit breaker
• Thermal-magnetic trip mechanism
• 10kA interrupting capacity at 240VAC
• I-Line plug-on mounting design
• AB (Red-Yellow) phase configuration
• Compatible with Class 650/734/820 I-Line panelboards and switchboards
• Provides reliable overload and short-circuit protection
• Compact Q-frame construction
• Accepts 4 AWG to 300 kcmil copper or aluminum conductors
• Suitable for commercial and industrial power distribution systems
• Durable construction for long service life
• RoHS compliant design

Brand: Square D / Schneider Electric
Series: PowerPact™ Q
Catalog Number: QBA221751
Model: QB
UPC: 785901446330
Manufacturer Part Number: QBA221751
UNSPSC: 39121601

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

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