Supply-circuit disconnecting means with rotary handles in compliance with NFPA 79 and UL 508A
Download the white paper: Rotary handles for main switches in compliance with NFPA 79 and UL 508A
The differences between the IEC and North American standards for control panels are also reflected in different requirements for accessories. One example of this are rotary handles for main switches, which need to be operated by intentionally turning an additional handle when the door is open.
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