Engineered for high-density residential power distribution, this 4-pole triplex breaker combines a 30A double-pole circuit with two 20A single-pole circuits. The efficient design frees up valuable room by fitting three circuits into a two-pole space. This plug-on device is compatible with standard Siemens load centers and replaces discontinued MP22030CT breakers. Rated for 10kAIC at 120/240VAC, it includes HACR certification and a common trip function for the center 30A poles.
Which load centers are compatible with the Siemens Q22030CT?
This breaker is designed for use in Siemens EQ, Siemens Ultimate, ITE, and Gould load centers specifically rated to accept Type QT plug-on breakers. Panels that only accept standard Type QP breakers will not accommodate the notched rejection feature on this unit. Verify your panel's wiring diagram before installation.
How much panel space does the Q22030CT require?
The Q22030CT requires two standard 1-inch panel spaces. By combining two 20A single-pole circuits and one 30A double-pole circuit into a single unit, it allows you to add circuits to a crowded panel without requiring a subpanel.
How are the circuits configured on the Q22030CT breaker?
The breaker features two independent 20A single-pole circuits on the outer poles and one 30A double-pole circuit on the inner poles. The inner 30A circuit includes a common trip function to disconnect both legs simultaneously during a fault.
Does the Q22030CT provide common trip protection for all poles?
No. The inner 30A double-pole circuit features a common trip mechanism to ensure both 240V legs disconnect simultaneously. The two outer 20A single-pole circuits operate independently and do not have a common trip.
What older or discontinued breakers can the Q22030CT replace?
The Q22030CT is a direct replacement for discontinued Murray MP22030CT breakers, as well as older ITE and Gould models with the exact same configuration, provided the panel accepts Type QT breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 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.