Siemens Q3030NC 30/30A Tandem Miniature Circuit Breaker
- 30/30A
- 2 Pole
- Plug-On
Quantity
Siemens Q3030NC - 30/30A Tandem Miniature Circuit Breaker
New
Quantity
Quantity
Siemens Q3030NC - 30/30A Tandem Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q3030NC |
| Series | Q |
| Amperage | 30/30A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Non-CTL) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-CTL, Space Saver, Insta-Wire, HACR Rated |
Quantity
Siemens Q3030NC - 30/30A Tandem Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q3030NC-R |
| Series | Q |
| Amperage | 30/30A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Non-CTL) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-CTL, Space Saver, Insta-Wire, HACR Rated |
Description
Built for older residential electrical systems, this 30/30A tandem circuit breaker provides two independent circuits within a single-pole footprint. The non-current limiting design is specifically engineered for legacy applications where standard tandems will not fit. This plug-on unit mounts into pre-1968 Siemens load centers that do not utilize CTL rejection features. Rated at 10kAIC for 120V circuits, it includes HACR certification and thermal-magnetic trip technology for reliable safety.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q3030NC |
| Series | Q |
| Amperage | 30/30A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Non-CTL) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-CTL, Space Saver, Insta-Wire, HACR Rated |
Product FAQs
7 answersWhat does the NC stand for in the Q3030NC catalog number?
The NC stands for Non-CTL (Non-Current Limiting). This indicates the breaker does not have a rejection clip and is designed for use in older load centers that predate CTL requirements.
What is the difference between the Siemens Q3030 and Q3030NC?
The standard Q3030 features a CTL rejection clip and is designed for modern panels that restrict tandem placement to specific slots. The Q3030NC lacks this clip, allowing it to be installed in older, pre-1968 Siemens, ITE, or Gould panels that do not have CTL rejection features.
Can I use the Q3030NC to power a 240V load?
No. The Q3030NC is a tandem breaker that connects to a single bus stab, providing two independent 120V circuits. It does not have a common trip mechanism and cannot provide 240V power.
Can this breaker replace a Murray MP3030NC?
Yes. Siemens phased out the Murray brand and UL listed their QT series breakers as direct, approved replacements for legacy Murray MH-T and MP series tandem breakers.
How many panel spaces does the Q3030NC require?
This tandem breaker provides two independent 30-amp circuits while only occupying a single 1-inch space in the load center.
Are the two circuits on the Q3030NC internally tied together?
No. The breaker features two independent single-pole circuits. If one circuit overloads and trips, the other circuit will remain energized.
What are Insta-Wire connectors on this breaker?
The Q3030NC features Siemens Insta-Wire technology, meaning the terminal screws are backed out from the factory. This allows for immediate wire insertion to speed up installation.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.