Siemens Q260HH Miniature Circuit Breaker

The "HH" suffix designates a high interrupting rating of 65kAIC at 240V. For comparison, the standard Q260 is rated at 10kAIC, and the Q260H is rated at 22kAIC.

This Type QP breaker is designed for plug-on installation in Siemens PL, ES, and EQ series load centers, as well as compatible Siemens panelboards.

Yes. Siemens Type QP breakers are UL listed to replace Murray MP-T series breakers, including the discontinued Murray MP260HH, in Murray Rock Solid load centers manufactured after January 2002.

As a standard 2-pole Type QP breaker, it requires two 1-inch spaces, occupying a total of 2 inches on the panel bus bar.

Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration motor loads.

No. Siemens Type QP breakers are not interchangeable with Square D or Eaton panels. They must only be installed in UL-approved Siemens or Murray enclosures to maintain panel certifications and prevent fire hazards.

The terminal lugs accept both copper and aluminum conductors ranging from 6 AWG to 4 AWG. When terminating aluminum wire, ensure an approved joint compound is applied to prevent oxidation.

No, the Q260HH is a standard thermal-magnetic circuit breaker that provides long-time and instantaneous trip functions for overload and short-circuit protection. It does not include ground fault or arc fault capabilities.

LI stands for Long-Time and Instantaneous trip functions. The thermal long-time element protects against sustained overloads, while the magnetic instantaneous element provides immediate tripping during severe short circuits.