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What is the dielectric strength/ insulation resistance between the two contacts of 10250T3,10250T2,10250T53 ?

For Dielectric strength, the plastic material we use has a dielectric strength of 19.7 kV/mm. The contact block itself is always tested at 2500V RMS AC for 1 sec in any single NO terminal and all other terminals connected together, and between all terminals connected together and the operator (pushbutton). The leakage current needs to be less than 5 mA or there shouldn’t be any breakdown when using hi-pot tester.