Siemens Q23020CT2NC 30/20A Quadplex Miniature Circuit Breaker
- 30/20A
- 4 Pole
- Plug-On
Siemens
Q23020CT2NC
30/20A Quadplex Miniature Circuit Breaker
Brand
Siemens
SKU
Q23020CT2NC
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Siemens Q23020CT2NC - 30/20A Quadplex Miniature Circuit Breaker
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Description
Tailored for legacy systems, the Siemens Q23020CT2NC is a 30/20A quadplex breaker featuring a Non-Current Limiting (Non-CTL) design. It includes common trip functionality on inner and outer poles. Lacking a rejection clip, this plug-on breaker mounts into pre-1968 Siemens load centers that accept non-CTL tandems. It is ideal for adding capacity to vintage panels. Rated for 10kA at 120/240VAC, the unit is HACR rated and SWD rated on the 20A poles for switching fluorescent lighting.Specifications
| Brand | Siemens |
|---|---|
| Series | QT |
| Amperage | 30/20A |
| 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 (Non-CTL / Pre-1968) |
| 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 |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Common Trip |
| Standards | HACR Rated, SWD Rated (20A Poles), UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Tandem |
Product FAQs
5 answersWhat type of load centers are compatible with the Q23020CT2NC breaker?
This Non-CTL quadplex breaker is designed exclusively for older Siemens and I-T-E load centers built before 1968 that do not have Circuit Total Limiting (CTL) rejection features. It will not fit in modern CTL-compliant panels.
How many panel spaces does this quadplex breaker require?
The Q23020CT2NC requires two standard 1-inch panel spaces to provide two independent 2-pole circuits. This space-saving design allows you to add a 30A and a 20A 240V circuit in the footprint of a standard 2-pole breaker.
What does the NC suffix indicate on this Siemens breaker?
The NC stands for Non-CTL, meaning Non-Circuit Total Limiting. It indicates the breaker lacks the physical rejection clip found on modern CTL breakers, allowing it to be installed in older panels manufactured before CTL standards were introduced.
Do the 2-pole circuits on this quadplex breaker feature a common trip?
Yes, the CT2 in the part number indicates that both the 30A outer poles and the 20A inner poles feature independent common trip mechanisms. If a fault occurs on one leg of a 240V circuit, both legs of that specific circuit will trip simultaneously to ensure safety.
Can this breaker replace older I-T-E quadplex breakers?
Yes, Siemens acquired I-T-E, and this QP-family breaker is the direct replacement for older I-T-E Non-CTL quadplex breakers with matching 30A and 20A configurations.
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