The two relays in Altiar 320 are different. For R1 relay, see pictures R1a, R1b. These are the data from relay manufacturers. Whether R1a or R1b is used in your product - it depends on relay availability from the supplier at the time Altivar was manufactured..
For R2 relay, there is only one supplier, see durability on picture R2. Example from curve, at 1A, electrical durability of R2 is 100x10000 cycles that means 1million cycles.
Pictures attached below are
R1a
R1b, R1b_1
R2
For R2 relay, there is only one supplier, see durability on picture R2. Example from curve, at 1A, electrical durability of R2 is 100x10000 cycles that means 1million cycles.
Pictures attached below are
R1a
R1b, R1b_1
R2
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