Siemens Electrical Products

What Siemens circuit breakers and load centers does Lumera Electric carry?

Lumera Electric carries Siemens Type QP, QT, QAF and QPF plug-on circuit breakers and Siemens PL and ES Series load centers for residential and light-commercial power distribution. Siemens QP breakers are UL 489 listed and come in three interrupting ratings — 10,000 AIC (QP), 22,000 AIC (QPH) and 65,000 AIC (HQP) — for overload and short-circuit protection.

Siemens QP breakers use a plug-on mounting design with the Insta-Wire terminal to speed installation, in single-, double- and quad-pole configurations. Type QT duplex breakers fit two 1/2" poles into 1" of space to expand circuit capacity in CTL-rated load centers. For fault protection, Siemens offers QAF (AFCI), QPF (GFCI) and QFGA2 dual-function breakers. Siemens load centers ship in NEMA 1 (indoor) and NEMA 3R (outdoor) enclosures with copper or aluminum bus, rated 125A, 150A, 200A and 225A on single-phase 120/240V 3-wire systems.

What breakers are compatible with Siemens load centers?

Siemens Type QP breakers are UL 489 listed for Siemens PL and ES Series panels and are the manufacturer-recommended choice. Eaton produces UL-classified breakers tested for Siemens panels. GE THQL breakers often fit physically but are not UL listed for Siemens enclosures, which can void the panel's listing — always confirm against the label inside your panel before installing.