Siemens QS2100H 100A 240V 2-Pole Circuit Breaker

The Siemens QS2100H is a robust 2‑pole plug‑in molded case circuit breaker rated at 100A and 240V, engineered to deliver reliable overcurrent and short‑circuit protection for residential, commercial, and light industrial panels. Built to drop into compatible OEM loadcenters and panelboards with a fast plug‑in connection, it makes installation and replacement quick, secure, and downtime‑friendly.

• Fast, tool‑free plug‑in installation — a clip‑in design seats securely into the panelboard bus, enabling rapid upgrades or servicing and minimizing system disruption.
• Thermal‑magnetic trip unit — combines dependable overload protection with magnetic short‑circuit response for stable, repeatable performance across varying loads and temperatures.
• 2‑pole, 100A protection — safeguards two hot conductors simultaneously, ideal for main distribution panels, subpanels, or branch circuits that demand reliable dual‑circuit protection.
• OEM‑matched compatibility — engineered to fit Siemens and compatible panelboards/loadcenters that require a 2‑pole plug‑in breaker, ensuring a solid mechanical and electrical fit.
• Versatile applications — well suited for residential service panels, light commercial deployments, and basic industrial enclosures needing dependable branch protection.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QS2100H
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 100A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short‑circuit protection

Whether you're updating an aging panel, replacing a non‑functional breaker, or outfitting a new installation, the QS2100H delivers dependable performance with quick, straightforward service. Its fast plug‑in connection, robust thermal‑magnetic protection, and OEM‑level compatibility make it a practical, future‑proof choice for securing your electrical distribution system.