Siemens HQR22B175 Circuit Breaker – QR Series – 175A – 2 Pole – 240VAC – Thermal Magnetic – Bolt-On

The Siemens HQR22B175 is a QR Series low-voltage molded case circuit breaker designed to provide dependable overload and short-circuit protection for commercial, industrial, and power distribution systems. Rated at 175A and 240VAC, this 2-pole breaker is suitable for single-phase applications requiring reliable circuit protection and high fault-clearing capability.

Featuring a thermal-magnetic trip unit with Long-Time and Instantaneous (LI) protection functions, the HQR22B175 offers accurate protection against sustained overloads and high-level fault currents. With a high interrupting capacity of 65kA at 240VAC, it is capable of safely interrupting substantial short-circuit currents in demanding electrical installations.

This QR frame standard 40°C breaker utilizes a bolt-on mounting design for secure installation. The breaker is supplied without lugs installed, allowing flexibility in selecting compatible terminal connections to meet specific application requirements.

Specifications

• Brand: Siemens
• Part Number: HQR22B175
• Series: QR Series
• Type: HQR2 Molded Case Circuit Breaker
• Category: Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Frame Type: QR Frame Standard 40°C Breaker
• Protection Type: Thermal Magnetic
• Trip Unit: Fixed, Non-Interchangeable
• Special Features: No Lugs Installed

Electrical Ratings

• Current Rating: 175A
• Voltage Rating: 240VAC
• Number of Poles: 2 Pole
• Phase: 1 Phase
• Interrupting Capacity: 65kA @ 240VAC
• Trip Functions: LI – Long-Time and Instantaneous

Construction

• Low-voltage molded case design
• Bolt-on mounting configuration
• Thermal-magnetic trip mechanism
• QR frame construction
• No lugs installed for application flexibility
• Durable industrial-grade housing
• Designed for high fault-current applications

Functions

• Overload protection
• Short-circuit protection
• Long-time delay protection
• Instantaneous fault protection
• Circuit switching and isolation

Dimensions

• Height: 4.331 in
• Width: 7.087 in
• Depth: 3.937 in
• Weight: 3.2 lbs

Standards

• CSA Approved

Applications

• Commercial electrical distribution systems
• Industrial power distribution equipment
• Panelboards and switchboards
• Equipment branch circuit protection
• High fault-current installations

Returns are easy

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

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