■Features
All 5SY4 designs have been approved acc. to UL 1077 and CSA 22.2 No. 235-M 89 and can therefore be used as “supplementary protectors”
for applications of up to 277 V AC (1-pole and 1-pole + N designs) and 480 V AC (2-pole, 3-pole, 3-pole + N and 4-pole designs).