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Siemens Q24030 CT2 - 40/30A Quadplex Miniature Circuit Breaker
- 40/30A
- 4 Pole
- Plug-On
Siemens
Q24030
CT2 - 40/30A Quadplex Miniature Circuit Breaker
Brand
Siemens
SKU
Q24030
Quantity
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Siemens Q24030CT2 - 40/30A Quadplex Miniature Circuit Breaker
New
Quantity
Quantity
Siemens Q24030CT2 - 40/30A Quadplex Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q24030 |
| Series | QT |
| Amperage | 40/30A |
| Poles | 4 |
| 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 | 40A: 8-6 AWG (Cu) / 8-4 AWG (Al), 30A: 14-6 AWG (Cu) / 12-6 AWG (Al) |
| Max Wire | 4 AWG (Al) |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, CTL Rejection, Common Trip, Space Saver |
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Siemens Q24030CT2 - 40/30A Quadplex Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q24030-R |
| Series | QT |
| Amperage | 40/30A |
| Poles | 4 |
| 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 | 40A: 8-6 AWG (Cu) / 8-4 AWG (Al), 30A: 14-6 AWG (Cu) / 12-6 AWG (Al) |
| Max Wire | 4 AWG (Al) |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, CTL Rejection, Common Trip, Space Saver |
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Description
Maximizing available enclosure capacity, this 40/30A quadplex breaker delivers two independent double-pole circuits within a compact residential design. The plug-on unit occupies just two panel spaces and fits Siemens EQ, Ultimate, PL, and ES series load centers. It also serves as a direct substitute for the MP230240CT2. Rated for 10kAIC at 120/240VAC, the breaker utilizes thermal-magnetic technology with common trip features on both the inner and outer poles for enhanced electrical safety.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q24030 |
| Series | QT |
| Amperage | 40/30A |
| Poles | 4 |
| 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 | 40A: 8-6 AWG (Cu) / 8-4 AWG (Al), 30A: 14-6 AWG (Cu) / 12-6 AWG (Al) |
| Max Wire | 4 AWG (Al) |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, CTL Rejection, Common Trip, Space Saver |
Product FAQs
7 answersWhich load centers are compatible with the Siemens Q24030CT2?
This quadplex breaker is designed for Siemens EQ, Ultimate, PL, and ES series load centers that are rated to accept Type QT breakers. The panel must have notched bus stabs to accommodate the breaker's CTL rejection clip.
Can I install the Q24030CT2 in an older non-CTL panel?
No. The Q24030CT2 is a Class CTL breaker equipped with a rejection clip. It will not seat properly in older, non-CTL panels that lack notched bus stabs. For those applications, a non-CTL quadplex breaker is required.
What is the pole configuration for this quadplex breaker?
The Q24030CT2 features a 40A double-pole circuit on the outer poles and a 30A double-pole circuit on the inner poles. Both circuits provide 240V protection and feature an internal common trip mechanism.
How many panel spaces does the Q24030CT2 require?
This quadplex breaker requires two standard 1-inch panel spaces to provide two independent 240V circuits, maximizing the available capacity in your enclosure.
What is the purpose of the CTL rejection clip on this breaker?
The Circuit Total Limiting (CTL) rejection clip prevents the breaker from being installed in panel spaces not designed for tandem or quadplex breakers. This ensures the panel's maximum circuit capacity is not exceeded.
What does the CT2 suffix mean on the Q24030CT2?
The CT2 suffix indicates that both the inner and outer double-pole circuits feature a common trip mechanism. If one leg of either 240V circuit experiences a fault, both poles of that specific circuit will trip simultaneously.
Can this breaker replace Murray quadplex breakers?
Yes, the Siemens Q24030CT2 is the direct, UL-listed replacement for the legacy Murray MP24030CT2 quadplex breaker.
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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
- SEShane E.Rated 5 out of 5 stars9/3/17Great website
They had every thing I needed. I ordered 2 breakers and had them shipped over night. We needed them quickly to run our a.c.. They came as promised.