Siemens QR23B100 Circuit Breaker

Siemens QR23B100 is a 3-pole, 100 A QR2 molded‑case circuit breaker designed for 240 V AC power systems and rated to interrupt up to 10 kA, making it well suited for protecting three‑phase feeders from overloads and short circuits. Mounted bolt‑on in compatible Siemens panels, the unit uses a thermal‑magnetic trip mechanism to provide both long‑time and instantaneous protection and includes load‑side lug terminals for straightforward connection. As part of the QR2 family, QR23B100 provides a 3‑pole, 100 A continuous current rating specifically for 240 V three‑phase circuits, aligning with other QR2 variants to fit a range of distribution configurations. Common applications include protection of large feeders and distribution panels in commercial or light industrial environments, where reliable 240 V protection helps safeguard equipment and maintain electrical safety.