Siemens Q1520 15/20A Tandem Miniature Circuit Breaker

The Q1520 is a Circuit Total Limiting (CTL) breaker equipped with a rejection clip, designed for panels with notched bus bars. The Q1520NC is a non-CTL breaker without a rejection clip, intended for older panels that do not restrict tandem breaker placement.

This breaker is approved for use in Siemens Type EQ, PL, ES, and Ultimate load centers that are designed to accept CTL tandem breakers. It is also a direct replacement for compatible older ITE and Gould panels.

The Q1520 features a space-saving duplex design that provides two independent 120V circuits (one 15A and one 20A) while occupying only a single 1-inch slot in the load center.

Yes, as a CTL (Circuit Total Limiting) breaker, the Q1520 includes a rejection clip on the mounting foot. This prevents it from being installed in panel slots not approved for tandem breakers.

The box lug terminals are rated to accept 14 to 8 AWG copper (Cu) conductors or 12 to 8 AWG aluminum (Al) conductors.

No. The Q1520 provides two independent 120V single-pole circuits. It does not have a common trip mechanism and cannot be used to supply a 240V load or a multi-wire branch circuit requiring simultaneous disconnect.

No, the Q1520 is a standard thermal-magnetic breaker. It provides overload and short-circuit protection but does not include Arc-Fault (AFCI) or Ground-Fault (GFCI) circuitry.

Siemens has phased out the Murray brand and issued UL substitution letters allowing Siemens QT breakers to replace Murray tandem breakers in most applications. However, you must verify that your specific panel documentation or the UL substitution letter permits this cross-reference.