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Siemens Q24030CT2 40/30A Quadplex Miniature Circuit Breaker
- 40/30A
- 2 Pole
- Plug-On
Siemens
Q24030CT2
40/30A Quadplex Miniature Circuit Breaker
Brand
Siemens
SKU
Q24030CT2
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Siemens Q24030CT2 - 40/30A Quadplex Miniature Circuit Breaker
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Description
Part of the QT series, the Siemens Q24030CT2 is a space-saving quadplex breaker designed for residential electrical distribution. It combines a 40A outer pair and a 30A inner pair into a single unit to maximize panel capacity. This plug-on miniature breaker mounts into Siemens EQ, Ultimate, PL, and ES series load centers, and serves as a drop-in replacement for the legacy Q24030. Rated for 10kA at 120/240VAC, it features common trip mechanisms for both the inner and outer circuit pairs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q24030CT2 |
| Series | QT |
| Amperage | 40/30A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, EQ Load Centers, Ultimate Load Centers, PL Series Load Centers, ES Series Load Centers |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Common Trip (Internal and External) |
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Space Saver, HACR Rated, Common Trip |
Product FAQs
7 answersHow are the 40A and 30A circuits configured on the Q24030CT2?
This quadplex breaker provides two independent 240V circuits. The outer poles form a 40A double-pole circuit, and the inner poles form a 30A double-pole circuit.
Which load centers are compatible with the Siemens Q24030CT2?
This QT series breaker is compatible with Siemens PL, ES, EQ, and Ultimate series load centers that are designed to accept CTL (circuit limiting) quadplex breakers.
What does the CT2 suffix indicate on this Siemens breaker?
The CT2 suffix designates this as a quadplex breaker with common trip functionality on both the inner and outer double-pole circuits. This ensures that both legs of either 240V circuit open simultaneously during an overload or short circuit.
Can this Siemens breaker replace older Murray quadplex breakers?
Yes. Siemens QT series breakers are UL listed to serve as direct replacements for legacy Murray quadplex breakers with matching amperage and pole configurations.
How many panel spaces does the Q24030CT2 require?
This quadplex breaker requires two standard 1-inch panel spaces. It provides two independent 240V circuits in the space typically required for a single double-pole breaker.
What type of trip technology does the Q24030CT2 use?
This breaker utilizes fixed thermal-magnetic trip technology. It provides long-time protection against mild overloads and instantaneous protection against severe short circuits.
Is this breaker a Circuit Total Limiting (CTL) type?
Yes. The Q24030CT2 is a CTL breaker. It features a physical rejection tab that prevents installation in older panels that are not designed to accept tandem or quadplex breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
- EDEric D.Rated 5 out of 5 stars4/17/23Arrived on time
Arrived on time