Siemens HQR22B150HL 150 Amp 240 Volt 2-Pole Circuit Breaker

Overview

The Siemens HQR22B150HL is a 150 A, 240 V, 2-pole bolt-on molded case circuit breaker designed for reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for durable performance, it pairs seamlessly with Siemens OEM panels, delivering a secure, code‑compliant installation that stands up to vibration and demanding electrical environments.

Why it stands out

• Secure bolt-on mounting creates a rigid, vibration‑resistant connection to the bus, reducing the risk of loose terminations and intermittent trips in high‑vibration installations.
• Thermal‑magnetic trip unit provides stable, repeatable protection by responding to both overload (thermal) and short‑circuit (magnetic) conditions, helping protect wiring and devices downstream.
• OEM‑aligned compatibility is designed to work with matching Siemens load centers and panelboards, ensuring proper fit, coordinated trip performance, and easier replacement in existing systems.
• Versatile application ideal for residential, commercial, and light industrial environments where dependable 2‑pole protection at 240 V is required.

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: HQR22B150HL
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 150 A
• Voltage rating: 240 V
• Poles: 2
• Mounting style: Bolt-on
• Applications: Branch circuit overcurrent and short‑circuit protection

Ideal use cases

• Replacing aging or failed breakers in Siemens panelboards and loadcenters with a like‑for‑like bolt‑on solution.
• New installations where long‑term reliability matters in areas with equipment vibration or mechanical movement.
• Residential service panels, modest commercial installations, and light industrial feeders that require robust 2‑pole protection at 240 V.

Installation and suitability

The HQR22B150HL is purpose-built for bolt‑on mounting, delivering a rigid connection that helps maintain consistent electrical performance over time. It’s engineered to coordinate with Siemens panelboards and load centers, simplifying upgrades, maintenance, and retrofits without sacrificing safety or reliability. When selecting protection for a 240 V, 2‑pole circuit, this breaker provides a straightforward, dependable solution that aligns with standard Siemens electrical architectures.

What you gain

• Peace of mind from a trusted, OEM‑integrated protection scheme.
• Enhanced reliability in environments where vibration or movement could affect lug tightness and connection quality.
• Clear, predictable protection characteristics thanks to the thermal‑magnetic trip mechanism.
• Easy integration with existing Siemens panelboards and loadcenters, reducing installation complexity and downtime.