The Siemens Q230 is a 30-amp double-pole Type QP breaker made for 240V two-wire circuits such as electric dryers, water heaters, and medium-size air-conditioning equipment. It plugs directly into compatible Siemens and Murray residential load centers, spanning both phases to provide a true common-trip disconnect. The thermal-magnetic trip mechanism handles the everyday job of protecting against overloads and clearing short-circuit faults quickly. With a 10 kAIC interrupt rating and Siemens Lifetime Limited warranty, the Q230 is a standard replacement for many residential 30-amp 240V circuits.
What should a 30-amp double-pole breaker power?
This size is commonly used for 240V appliances such as electric dryers, water heaters, and some condensers or shop equipment. It should only protect circuits wired for 30 amps, which usually means 10 AWG copper conductors. If the existing appliance nameplate or panel schedule says 30A 240V, the Q230 is the matching breaker style.
Does the Q230 take up one space or two in the panel?
It takes up two adjacent spaces because it connects to both hot phases in the panel. That is how it delivers 240V and ensures both legs trip together if a fault occurs. Homeowners replacing one should make sure the two breaker spaces line up exactly like the original.
Why can't I replace a 30-amp double-pole breaker with a single-pole model?
A single-pole breaker only serves one hot leg and is for 120V circuits. A 30-amp double-pole breaker is required when the load needs 240V across two hot conductors and a common-trip disconnect. Using the wrong style can leave part of the circuit energized and create a serious safety problem.
Which panel families accept the Siemens Q230?
The Q230 is listed for Siemens ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, and OG series residential panels plus Murray panels. The compatibility label inside the panel is still the final check before installation. If the panel specifies Type QP, this breaker is in the correct family.
# Siemens 30 Amp Double Pole Type QP Circuit Breaker (Q230) **Model:** `Q230` **Brand:** Siemens **Category:** Circuit Breaker > The Siemens Q230 is a 30-amp double-pole Type QP breaker made for 240V two-wire circuits such as electric dryers, water heaters, and medium-size air-conditioning equipment. It plugs directly into compatible Siemens and Murray residential load centers, spanning both phases to provide a true common-trip disconnect. The thermal-magnetic trip mechanism handles the everyday job of protecting against overloads and clearing short-circuit faults quickly. With a 10 kAIC interrupt rating and Siemens Lifetime Limited warranty, the Q230 is a standard replacement for many residential 30-amp 240V circuits. ## Specifications | Attribute | Value | |---|---| | Product Type | Circuit Breaker | | Poles | 2 | | Amperage | 30 | | Voltage Vac | 240 | | Interrupt Rating Ka | 10 | | Trip Type | Thermal-Magnetic | | Afci Protection | No | | Gfci Protection | No | | Self Test | No | | Plug On Neutral | No | | Wire Gauge Awg | 10-8 | | Compatible Panels | Siemens ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, OG series; Murray panels | | Certifications | UL 489 | | Warranty | Lifetime Limited | ## What's Included - (1) Siemens Q230 Circuit Breaker Source: https://www.jaspecs.com/siemens/circuit-breaker/q230-siemens-30a-double-pole-circuit-breaker/