Part of the QP family, the Siemens Q280HH00S01 is a high-interrupting miniature circuit breaker built for commercial applications. It delivers reliable thermal-magnetic overcurrent protection for demanding electrical systems. This two-pole, 80A breaker features a plug-on mounting style that installs into standard Siemens load centers and panelboards. A factory-installed 120VAC shunt trip allows for remote tripping of the circuit. It features an extra-high 65 kAIC rating at 120/240V.
Extra High Interrupting Capacity, HACR Rated, Common Trip
Product FAQs
5 answers
What does the 00S01 suffix indicate on the Q280HH00S01?
The 00S01 suffix indicates that this breaker includes a factory-installed 120V shunt trip accessory. This allows the breaker to be tripped remotely using a 120VAC control signal.
How does the Q280HH00S01 differ from standard Q280 or Q280H breakers?
The "HH" designation indicates an HQP frame with an extra-high interrupting rating of 65kAIC at 120/240VAC. In comparison, standard Q280 (QP frame) breakers are rated at 10kAIC, and Q280H (QPH frame) breakers are rated at 22kAIC.
Can this breaker be used to replace older Murray MP-T series breakers?
Yes, Siemens QP and HQP frame breakers are UL listed to replace discontinued Murray MP-T equivalents, such as the MP280HH, in compatible load centers.
Which panels are compatible with the Q280HH00S01?
This plug-on breaker is designed for installation in Siemens load centers and Siemens panelboards that accept QP or HQP frame miniature circuit breakers.
What are the wire size requirements for the Q280HH00S01 terminals?
The breaker lugs accept 4 AWG to 1/0 AWG copper conductors or 2 AWG to 1/0 AWG aluminum conductors. Always verify that your selected wire size meets the 80A circuit requirements and local electrical codes.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 48 reviews.
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Reviews Summary
Generated by AI from 91 most recent customer reviews
Last updated 8/1/25
Customers say these circuit breakers arrive quickly and match their specifications perfectly. Many reviews mention success finding hard-to-locate specialty breakers through this supplier. Common feedback includes praise for the accurate product descriptions, reliable shipping, and competitive pricing. While some note occasional stock limitations, users consistently report the breakers fit and function as intended.