Characteristics Indicated on the Faceplate Label

A — Circuit breaker type

B — Circuit breaker symbol

C — Commercial reference

D — UL interrupting rating

E — Certification marks

F — Circuit breaker rating

G — Termination characteristics

H — Reference standard

I — Ui: rated insulation voltage

J — Uimp: rated impulse withstand voltage

K — IEC interrupting ratings:

  • Icu: ultimate breaking capacity,

  • Ics: service breaking capacity, depending on the operating voltage Ue.

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