QR22B175 - 175 Amp Circuit Breaker

QR22B175 - 175 Amp Circuit Breaker

When your project demands a solid, no-nonsense 175 amp protection device, the QR22B175 from Siemens delivers dependable service in both commercial and industrial environments. This 2-pole breaker is part of the QR2 line, engineered to manage overloads and short circuits with confidence. With a 10 kA interrupting rating at 120/240 V and built-in load side lugs, it’s ready to install and stand guard—no frills, just performance.

Key Features and Benefits

• 175 A, 2-pole configuration: Provides balanced protection across both legs of a circuit
• 10 kA Interrupting Capacity at 120/240 V: Clears faults reliably in typical power systems
• Load-side lugs included: Cuts down on extra purchases or add-on parts
• HACR-rated: Suitable for heating, air conditioning, and refrigeration equipment
• Thermal-magnetic trip unit: Combines long time and instantaneous elements for precise protection
• Molded-case construction: Withstands everyday use and abuse without compromise

Technical Specifications

• Part Number: QR22B175
• Frame Type: QR2
• Poles: 2
• Amperage: 175 A
• Rated Voltage: 120/240 V AC
• Interrupting Rating: 10 kA @ 120/240 V
• Trip Style: Thermal-magnetic (LI – long time + instantaneous)
• Connection: Bolt-on with load side lugs
• Dimensions: Approx. 7.0″ height (per Siemens spec)
• Wire Range: Supports up to 2/0 AWG Cu/Al per Siemens catalog
• Ambient Rating: 40 °C (derating required above that)

Material Compliance and Certifications

• Certifications: This breaker is UL 489 listed and meets CSA-C22.2 and NOM-003 standards, ensuring acceptance across North American and international markets.
• HACR Rating: The HACR rating indicates compatibility with HVAC and refrigeration equipment.

Where It Works Best

• The QR22B175 excels in panel upgrades, new installations, or system expansions where 175 amp protection is required. You’ll find it especially useful in:
• Commercial buildings (office, retail, light industrial)
• Industrial utility panels and subpanels
• HVAC, refrigeration, and compressor circuits
• Applications demanding load balancing or two-pole protection