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what is the difference between type 1 & 2 coordination ?

For type 1 coordination  the welding curve of contact intersect with circuit breaker and contactors characteristic curve so when short circuit occur we must replace or maintain the circuit breaker and contactor contacts

For type 2 coordination  the welding curve of contact doesn't intersect with circuit breaker characteristic curve so when short circuit occur we must replace or maintain the circuit breaker contacts
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