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Siemens Q1520NC 15/20A Tandem Miniature Circuit Breaker
- 15/20A
- 1 Pole
- Plug-On
Siemens
Q1520NC
15/20A Tandem Miniature Circuit Breaker
Brand
Siemens
SKU
Q1520NC
Quantity
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Siemens Q1520NC - 15/20A Tandem Miniature Circuit Breaker
New
Quantity
Quantity
Siemens Q1520NC - 15/20A Tandem Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q1520NC |
| Series | QT |
| Amperage | 15/20A |
| Poles | 1 |
| 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 (Non-CTL), Older ITE/Gould Panels (Pre-1968) |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment, Handle Tie |
| Standards | HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Space Saver, HACR Rated, SWD Rated, Insta-Wire, Non-CTL |
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Quantity
Siemens Q1520NC - 15/20A Tandem Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q1520NC-R |
| Series | QT |
| Amperage | 15/20A |
| Poles | 1 |
| 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 (Non-CTL), Older ITE/Gould Panels (Pre-1968) |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment, Handle Tie |
| Standards | HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Space Saver, HACR Rated, SWD Rated, Insta-Wire, Non-CTL |
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30/15A Tandem Miniature Circuit Breaker
Description
Specifically manufactured for legacy systems, the Siemens Q1520NC is a non-CTL tandem circuit breaker. It offers independent 15A and 20A circuits within a single-pole footprint, operating at 120/240VAC with a 10kAIC rating. This plug-on breaker lacks a rejection clip, allowing it to mount into older pre-1968 ITE, Gould, and Siemens non-CTL panelboards. Ideal for adding capacity to older enclosures, this space-saving unit replaces the MP1520N and features Insta-Wire connections.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q1520NC |
| Series | QT |
| Amperage | 15/20A |
| Poles | 1 |
| 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 (Non-CTL), Older ITE/Gould Panels (Pre-1968) |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Tandem |
|---|---|
| Available Options | Padlock Attachment, Handle Tie |
| Standards | HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Space Saver, HACR Rated, SWD Rated, Insta-Wire, Non-CTL |
Product FAQs
6 answersWhat does the "NC" suffix in the Q1520NC part number indicate?
The "NC" stands for Non-CTL (Circuit Total Limiting). This breaker lacks a rejection clip and is designed specifically for replacement use in older panels (pre-1968) that do not have built-in CTL rejection features.
Can I install the Q1520NC in a modern Siemens load center?
Non-CTL breakers are intended for replacement use only in older panels. Modern load centers require CTL breakers, which feature a rejection clip to prevent exceeding the panel's maximum circuit capacity.
Can this breaker be used to replace older ITE or Gould breakers?
Yes, Siemens QT series breakers are UL listed for use in older ITE and Gould load centers that are rated to accept type QT breakers.
Does the Q1520NC provide 240V power?
No. This tandem breaker provides two independent 120V single-pole circuits (one 15A and one 20A) from a single panel bus stab. It cannot supply 240V power for multi-pole appliances.
Is the Q1520NC rated for HVAC and switching duty applications?
Yes, this thermal-magnetic breaker carries both HACR (Heating, Air Conditioning, and Refrigeration) and SWD (Switching Duty) ratings, making it suitable for HVAC equipment and standard lighting control.
Why must I verify my panel's wiring diagram before installing a Non-CTL tandem breaker?
Non-CTL breakers lack a rejection clip and will physically fit into any standard 1-inch slot. Verifying the wiring diagram ensures the panel is rated for tandem breakers and prevents overloading the panel bus beyond its designed circuit capacity.
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