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What is the main difference between R5 & R9 Rotary disconnect

R5 series is UL 508 listed disconnect and are suitable for local motor disconnect applications.They are not approved as a main disconnect in a panel or at the entrance of a panel.they are load breaking switching and isolation provide safety solutions for any low voltage circuits. ideal for machine and control circuits. 

R9 series is UL 98 listed disconnect that is approved for general purpose/main disconnect and as branch circuit protection when supplied with fuses. 

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Rotary Switches