Which Square D or Schneider Electric circuit breakers have SWD (Switch-Duty) ratings?
Per UL 489, the switch-duty rating label (SWD) may be applied to one, two and three pole 15 A and 20 A circuit breakers, 347 Vac or less that pass the special SWD test requirements. The SWD rating applies to breakers used for regularly switching flourescent lights. While SWD may be applied to multiple-pole breakers, Schneider only offers the SWD rating on the single pole circuit breakers as listed below, and Powerpact H as noted at the bottom of the list.
Multi-9 UL 489 listed 240 Vac single-pole 15–20 A breakers are SWD rated.
Powerpact HD HG HJ HL breakers (applies only to 15 and 20 A / 277 Vac or less, 2P and 3P H frame breakers)
The following breakers are NOT SWD rated:
QO and HOM breakers with any of the following suffixes are NOT SWD rated: GFI, AFI, CAFI, DF, PDF, HID, EPD, EPE, K
Tandem QOT and HOMT, and QB type breakers are NOT SWD rated.