The FAA requires 4,020 Phoenix Contact Surge Protection Devices (P/N 2800982) to support sustainment and maintenance of mission-critical air traffic control systems. The brand is mandatory because Phoenix Contact owns the proprietary information needed to ensure form, fit, and function compatibility. This is a market survey for informational purposes only, not a request for proposals, and it will be used to develop a source list and assess potential small business, SDVOSB, or 8(a) set-aside opportunities. Interested vendors must submit a capability statement and, if applicable, an SBA 8(a) certification letter, with all documents marked as proprietary if necessary. The applicable NAICS code is 335999 with a 600-employee size standard.