Siemens Q2100 Miniature Circuit Breaker

Siemens Q2100 Miniature Circuit Breaker is a 2-pole, 100 A plug-in residential circuit breaker in the QP family, rated for 120/240 V AC to protect circuits in Siemens load centers and panels, with thermal-magnetic trip protection that responds to overloads and short circuits for reliable field protection. As the standard base model for 100 A, 2-pole protection, the Q2100 is available in QP 2-pole form, and Siemens also lists higher- or dual-rated variants such as Q2100H and Q2100HH within its QP MiniBreaker lineup. This model is widely stocked by major distributors and retailers (including Grainger, SupplyHouse, and Lowe's) and is described by Siemens data sheets as part of the QP/MiniBreaker family for residential distribution upgrades, panel replacements, or new installations where robust 100 A two-pole protection is required.