Siemens QN2175RH 2-Pole Molded Case Circuit Breaker

Siemens QN2175RH is a two-pole, 1-phase molded-case circuit breaker designed for 120/240 VAC operation and rated at 175 A, belonging to the QN family with Type QNRH reversible handle for flexible mounting in compatible Siemens panels and enclosures. The device employs a thermal-magnetic trip mechanism that provides precise overcurrent protection for feeders and branch circuits, with a 22 kA interrupt rating at 240 V to meet short-circuit protection needs in commercial and light industrial installations. It is a plug-in unit that accepts 4 AWG to 300 kcmil aluminum or copper conductors, enabling robust wiring options, and its dimensions measure about 9 inches long by 6 inches wide by 3 inches high, aligning with standard Siemens QN-series footprints for straightforward substitution in existing panels. Designed for use in Siemens EQ load centers and other compatible QN-series enclosures, the QN2175RH provides reliable, code-compliant protection for mains and feeders up to 175 A, helping guard electrical systems against overloads and short circuits.