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The axes of the chart below are maximum voltage ratings and interrupting current ratings per ANSI and IEC standards.

 

Shown in the chart are the model numbers available for those ratings.

 

 KA/KV

 72.5   123 145   170  245  362 550
20 70SFMT40SE 100SFMT40SE 120SFMT40SE 140SFMT40SE 200SFMT40SE 300SFMT40SE 500SFMT40SE
31.5 70SFMT40SE 100SFMT40SE 120SFMT40SE 140SFMT40SE 200SFMT40SE 300SFMT40SE 500SFMT40SE
40 70SFMT40SE 100SFMT40SE 120SFMT40SE 140SFMT40SE 200SFMT40SE 300SFMT40SE 500SFMT40SE
50 70SFMT50SF 100SFMT50SF 120SFMT50SF 140SFMT50SF 200SFMT50SF 300SFMT50SE 500SFMT50SE
63 70SFMT63SF 100SFMT63SF 120SFMT50SF 140SFMT50SF 200SFMT63SF 300SFMT63SE 500SFMT50SE
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