QR23B225 - 225 Amp Circuit Breaker

QR23B225 - 225 Amp Circuit Breaker

Safeguard your electrical system with confidence using the Siemens QR23B225 circuit breaker. Engineered for 240 VAC systems, this 3-pole, 225-amp breaker in the QR2 frame combines dependable protection with compact dimensions—measuring approximately 7.0 inches in height and weighing roughly 4.5 pounds. With a 10,000 AIC rating at 240 V and HACR approval, it stands ready to handle overloads and short circuits in demanding environments. Pre-installed load-side lugs allow you to wire it immediately upon installation, reducing labor time. Rated for operation at 40 °C ambient, it’s a practical and efficient pick for commercial, HVAC, or industrial panel applications.

Key Features and Benefits

• 225A, 3-pole capacity: Supports heavier loads or three-phase setups.
• 10 kA interrupting rating at 240V: Offers reliable protection under short-circuit conditions.
• HACR rated: Compatible with HVAC, compressor, and related systems.
• Compact footprint: Easier to install in tighter panel layouts.
• Load-side lugs included: Immediate readiness for wiring without extra parts.
• Thermal/magnetic trip mechanism (LI): Balances slow and instantaneous protection modes.

Technical Specifications

• Part Number: QR23B225
• Frame: QR2
• Amperage Rating: 225 A
• Number of Poles: 3
• Voltage Rating: 240 VAC
• Interrupting Capacity: 10 kA @ 240 V
• Dimensions:
  • Height: 7.0 in
  • Width: ~4.5 in¹
  • Depth: ~3.39 in²
• Weight: ~4.5 lb
• Operating Ambient: 40 °C
• Trip Type: Thermal/magnetic (LI)
• Connection Style: Load-side lugs (screw lug)
• Certifications: UL 489, CSA C22.2, NOM-003, HACR

¹, ² Dimensions per Siemens spec sheets. Continuous current and conductor sizing conform to manufacturer and NEC guidelines.

Material Compliance and Certifications

• Industry Standards: Built to industry standards, the QR23B225 meets UL 489, CSA C22.2, and NOM-003 safety requirements.
• Molded Case Design: Ensures insulation integrity under rigorous conditions, while the internal thermal/magnetic trip system is engineered for reliable actuation in overload or short circuits.
• Accessory Options: Optional internal and external accessories (e.g., auxiliary switches, shunt trips, interlocks) are field-installable, adding flexibility without compromising safety.

Where It Works Best

• The QR23B225 is ideal for use in commercial electrical panels, HVAC systems, and light industrial applications where a 225-amp, 3-pole circuit breaker is needed. Electricians often choose it for projects requiring dependable protection but with space constraints, because its compact frame makes it easier to fit in dense switchgear. Thanks to its HACR rating, this breaker is a smart pick for installations tied to HVAC compressors or systems. Whether you're upgrading a panel or building out a new control cabinet, this breaker delivers strong performance without overcomplicating installation.