AF0500 Arc-Flash Relay Increases Electrical Safety in Machine Tool Manufacturing
For one of the company’s recent projects for a North American customer, Pietro Carnaghi asked its consultant firm, AC&E, to certify that a machine was in compliance with a new NFPA 70 rule. Recent updates to NFPA 70 National Electrical Code (NEC) 240.87 include a requirement for an arc-energy reduction system where the overcurrent protection device installed in a circuit breaker is rated at 1,200 A or higher. There are different methods allowed by NEC to meet this requirement for reducing arc energy — one of these is the use of an energy-reducing active arc-flash mitigation system. In order to be fully compliant with this new requirement, Pietro Carnaghi contacted Littelfuse to inquire about an arc-flash relay as a possible solution.

