Siemens QN2150H - 150 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

The Siemens QN2150H is a 2-pole, 150A, 240V plug-in molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short‑circuit protection in panelboards and load centers. Built for quick serviceability and dependable protection, it’s a purpose-built solution for demanding electrical setups in residential, commercial, and light industrial environments.

• Fast plug-in installation: Quick connection minimizes panel downtime and simplifies replacement, keeping your electrical system up and running with minimal fuss.
• Thermal-magnetic trip unit: A dual-sensor design combines a thermal element for stable, repeatable protection with magnetic trip for instantaneous response to severe short circuits—ensuring consistent performance across varying temperatures and loads.
• OEM-compatible design: Engineered to pair with matching Siemens QN-series load centers and panelboards, delivering a cohesive fit, accurate trip characteristics, and streamlined maintenance.
• Robust 2-pole, 240V protection: Specifically suited for protecting 240V branch circuits and feeders, with a 150A rating to handle substantial load demands in larger panels.
• Versatile applications: Ideal for residential panels, commercial electrical rooms, and light industrial installations where reliable overcurrent and short-circuit protection is critical.

Why choose the Siemens QN2150H

When you need dependable protection with minimal installation time, the QN2150H delivers. The plug-in design reduces alignment and torque issues during installation, while the thermal-magnetic trip provides predictable, repeatable performance across a range of operating conditions. Its compatibility with Siemens’ OEM panelboards ensures consistent electrical characteristics, which translates to easier troubleshooting and safer, more reliable operation.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QN2150H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Practical tip: verify that your panelboard or load center is designed for Siemens QN-series breakers and that the 2-pole 150A rating aligns with your circuit’s load calculations and safety requirements. For installers and property owners, this means faster upgrades, easier maintenance, and a clear path to reliable, code-compliant electrical protection.