Siemens US2:HNF361RPV 30-Amp 3 Pole 600-volt DC PV 3 Wire N Fused Heavy Duty Safety Switches This is a 30 Amp, 3 Pole, 600V DC PV, 3 Wire, Non-Fused HD, Type 3R Quick-make, quick-break operating mechanism that ensures positive operation Generous top, bottom and side gutters that meet or exceed NEC wire-bending space requirements Unique enclosure design increases rigidity and prevents cuts and scrapes to conductors and installer's hands