I see your comment to ignore:
To protect timer, read following:
1) Max load on this timer is 5 amp at 240volts
http://waterheatertimer.org/pdf/Omron-H3YN0302.pdf
2) If load exceeds 5 amps, then use timer to control contactor.
Here is crude drawing showing basic wiring for pin timer controlling heavy amp load.
http://waterheatertimer.org/images/10-pin-wiring2-1000.jpg
3) If amp rating on incoming wires exceeds 5 amp, for example is circuit breaker feeding circuit is 20-30 amps etc, then protect wires to timer using busman in-line fuseholder with fast-acting 5 amp cartridge fuse.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
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Problem solved please disregard this qustion
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