Click here to download the full Cross Reference Chart Select any of the following Series of ROYAL OHM to view it’s HTR- Equivalent(s): PRZA/PRZC/PRZD PRT/PRU PRM PFAS/PFAT KNP(FUSIBLE) QR/QRZG PRW PRS PWRC PRWI KNP KNS QL/QH RS26 RS30 RS20 RS12 CSRA PDM