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Siemens Q21515CT2 Quadplex Miniature Circuit Breaker
- 15A
- 4 Pole
- Plug-On
Siemens
Q21515CT2
Quadplex Miniature Circuit Breaker
Brand
Siemens
SKU
Q21515CT2
Quantity
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Siemens Q21515CT2 - 15A Quadplex Miniature Circuit Breaker
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Description
Built for high-density residential panels, the Siemens Q21515CT2 provides two independent 15A double-pole circuits in a standard two-inch slot. The internal common trip mechanism ensures that if one leg faults, both poles of the pair trip simultaneously, meeting NEC requirements for 240V loads. This plug-on breaker fits Siemens EQ, PL, ES, and Ultimate load centers, and replaces the legacy MP21515CT2.Specifications
| Brand | Siemens |
|---|---|
| Series | QT |
| Amperage | 15A |
| 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 EQ, PL, ES, Ultimate Load Centers |
| 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, Handle Tie |
| Standards | HACR, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Space Saver, HACR Rated, Insta-Wire, Common Trip, CTL Rejection |
Product FAQs
5 answersWhat load centers are compatible with the Siemens Q21515CT2 quad breaker?
This Type QT breaker is designed for use in Siemens EQ, PL, ES, and Ultimate load centers that accept space-saver breakers. Always verify your panel wiring diagram to ensure it accepts quadplex breakers in the desired slot.
How many panel spaces does the Q21515CT2 require?
This quadplex breaker requires two standard one-inch panel spaces to provide two independent 2-pole 15A circuits.
Are the inner and outer circuits on this breaker common-trip?
Yes, the Q21515CT2 features common-trip mechanisms for both the inner 15A and outer 15A circuits. If a fault occurs on one leg of a 2-pole circuit, both legs of that specific circuit will trip simultaneously.
Is the Siemens Q21515CT2 HACR rated?
Yes, this breaker is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment that requires a 15A 2-pole circuit.
Can I use the Q21515CT2 to replace older ITE quad breakers?
Yes, Siemens acquired ITE, and the Q21515CT2 is the direct replacement for older ITE quad breakers with the same catalog number and specifications.
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