Electrical Durability of Contacts
Durability (inductive load) = durability (resistive load) x reduction coefficient. Resistive AC load
X Switching capacity (kVA) Y Durability (Number of operating cycles) Reduction coefficient for inductive AC load (depending on power factor cos ϕ)
Y Reduction coefficient (A) Maximum switching capacity on resistive DC load
X Voltage DC Y Current DC Note : These are typical curves, actual durability depends on load, environment, duty cycle, etc.
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