Siemens Q350H - 50 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Siemens Q350H is a dependable 50A, 240V, 3-pole plug-in molded‑case circuit breaker designed to protect your electrical system where it matters most. Built for reliable branch circuit overcurrent and short‑circuit protection in panelboards and load centers, it combines fast installation with precise protective performance.

Key advantages of the Siemens Q350H

• Fast plug-in connection enables quick installation and effortless replacement, minimizing panel downtime.
• Thermal‑magnetic trip unit delivers stable, repeatable protection for both overloads and high‑magnitude short circuits.
• 3-pole design ensures balanced protection across all phases in three‑phase systems, reducing the risk of neutral or uneven loading issues.
• OEM compatibility designed to pair with matching Siemens OEM load centers and panelboards for a clean, reliable fit.
• Versatile applications suitable for residential panels, commercial setups, and light industrial equipment, covering a wide range of protection needs.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: Q350H
• Type: Thermal‑magnetic molded‑case circuit breaker
• Amperage rating: 50A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short‑circuit protection

Ideal use cases and practical scenarios

The Siemens Q350H excels in environments where reliable protection for multi‑phase loads is critical. It’s a smart choice for three‑phase feeders in small commercial spaces, service panels in light industrial settings, and residential panels that require robust 3‑pole protection for equipment like HVAC drives, three‑phase motors, pumps, or large lighting circuits.

Why this matters: with its thermal‑magnetic trip, the Q350H responds quickly to short circuits while avoiding nuisance trips from normal load fluctuations. Its plug‑in design simplifies upgrades or replacements during panel maintenance, reducing downtime and labor costs. By pairing with compatible Siemens panelboards, you get a cohesive protection system that’s easier to install, inspect, and service over the life of the installation.

Installation and compatibility notes

Choose the Siemens Q350H when you need a plug‑in solution that matches Siemens OEM load centers and panelboards. Its 3‑pole configuration is ideal for balanced, three‑phase circuits, and its compact molded‑case design fits standard panel spaces without compromising protection capabilities. For best results, ensure a proper plug‑in seating and follow standard electrical safety practices during installation and replacement.

In summary, the Siemens Q350H delivers precise, reliable protection for 50A circuits at 240V in a plug‑in package designed for quick work orders, long‑term durability, and seamless compatibility with Siemens panel solutions. It’s a practical, purpose‑built choice for professionals and conscientious property owners who value dependable protection and streamlined service.