Built for legacy residential applications, the Q1515NC provides two independent 15A circuits while occupying just one standard breaker space. This non-CTL (Circuit Total Limiting) design lacks a rejection clip, allowing it to be used in older panels that do not restrict the number of tandem breakers installed. It mounts into pre-1968 ITE, Gould, and older Siemens non-CTL load centers.
What is the difference between the Siemens Q1515 and the Q1515NC?
The Q1515 is a CTL (Circuit Total Limiting) breaker with a rejection clip, designed for modern panels with notched bus bars. The Q1515NC is a Non-CTL breaker without a rejection clip, intended specifically for older, pre-1968 Siemens, ITE, and Gould panels that do not restrict tandem breaker placement.
Can I use the Q1515NC in a modern Siemens load center?
No. Modern Siemens load centers are designed for CTL breakers and have notched bus stabs. Installing a Non-CTL breaker like the Q1515NC in a modern panel to bypass circuit limitations violates UL listings and National Electrical Code (NEC) requirements. It should only be used as a replacement in pre-1968 non-CTL panels.
How much panel space does the Q1515NC tandem breaker require?
The Q1515NC requires a single 1-inch breaker space to provide two independent 15-amp, single-pole circuits.
What is the recommended terminal tightening torque for the Q1515NC?
The load terminals on the Q1515NC should be tightened to 25 lb-in. Always verify with the manufacturer label on the breaker before installation.
Will this breaker replace older ITE or Gould tandem breakers?
Yes. Siemens acquired ITE and Gould, and the Q1515NC serves as the direct replacement for older 15/15A non-CTL tandem breakers used in pre-1968 ITE and Gould load centers.
Does the Q1515NC provide 240V power?
No. The Q1515NC is a tandem breaker that provides two independent 120V single-pole circuits. It does not have a common trip and cannot be used to supply a 240V multi-wire branch circuit or 240V appliance.
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