Siemens QJH23B150 150A 3P 240V Circuit Breaker, Bolt-On | AmpState

The Siemens QJH23B150 is a rugged, bolt-on circuit breaker designed to protect electrical distribution systems in panelboards and load centers. With a 150-amp rating and 3 poles at 240V, this breaker is engineered for reliable performance in commercial and industrial environments where precise protection and quick maintenance matters.

Designed for a direct part-number match, this unit minimizes installation guesswork and reduces downtime when stocking spares. It’s a purpose-built choice for technicians and panel builders who need a dependable Siemens breaker that aligns with existing bolt-on mounting configurations and bus connections.

• Part Number: QJH23B150
• Amperage: 150 A
• Poles: 3
• Voltage: 240 V
• Mounting: Bolt-On
• Type: Circuit Breaker for panelboards, load centers, and electrical distribution
• Compatibility: Suited for Siemens bolt-on panel systems; ideal when a direct part-number match is required

Why this matters in the field:

• Precision fit, faster swaps: A direct part-number match ensures the breaker nests correctly in Siemens panelboards and aligns with the existing bus structure for a secure, reliable trip path.
• Clear capacity for demanding loads: 150 A is well-suited for protecting medium-to-high current circuits common in commercial equipment rooms and industrial applications.
• Reliable distribution protection: The 3-pole design provides balanced protection across three conductors, helping prevent overcurrent conditions from propagating through the electrical system.
• Inventory optimization: For maintenance teams and panel builders, keeping an exact QJH series part on hand reduces back-and-forth to verify compatibility.

This product is ideal for:

• Maintenance teams performing replacements in existing Siemens installations
• Panel builders configuring bolt-on circuit protection in new builds
• Electrical distributors stocking targeted spares for fast service calls

Practical use cases:

• Replacing a failed unit in a Siemens panelboard that specifies bolt-on breakers
• Stocking a reliable, ready-to-install 150 A, 3-pole solution for emergency service calls
• Specifying exact-fit protection for commercial equipment rooms and distribution panels

Need help confirming fit before purchase? AmpState offers assistance to verify compatibility and ensure you’re selecting the exact part needed for your panel or distribution setup. Message us with your panel model and requirements, and we’ll help confirm that QJH23B150 is the right match.

Availability and support: This Siemens 150A 3P 240V bolt-on circuit breaker is available from AmpState, with expert guidance to ensure proper installation and reliable protection for your electrical distribution system.