UNSPSC 39122314: Blocking relay

An auxiliary relay used hinder operation of other relay or equipment under prescribed conditions.

UNSPSC 39122314 Blocking relay is a Commodity-code classification that in recent state and local procurement activity appears to span electrical control equipment, motor control centers (MCCs), and associated installation and integration services for water, wastewater, and utility infrastructure operations. The issuing bodies include county utilities departments, municipal water districts, and independent school districts, with the heaviest recent activity concentrated among Florida county commissioners and California water agencies. The scope of work under this code encompasses both procurement of engineered electrical control equipment — particularly motor control centers for pump stations and water treatment facilities — and the comprehensive professional services required to replace, integrate, test, and commission those systems, including PLC replacement, SCADA modifications, shop drawings, factory acceptance testing, and operator training.

Recent solicitations show activity across Florida, California, and New Mexico. Hillsborough County Board of County Commissioners issued ITB 26-00393 for pump station control panels and other enclosures with a two-year estimated value of $3.66 million and a September 29, 2026 bid deadline; West Basin Municipal Water District in California issued RFB TRWRP0120 for MCC replacement at the Torrance Refinery Water Reclamation Plant with bids due March 31, 2026 and a mandatory pre-bid meeting and job walk; the City of Santa Fe, New Mexico is seeking PLC replacement and SCADA system modifications via RFP FY26RFP036 with proposals due December 18, 2025, allowing local preference consideration; and the City of Tampa's Wastewater Department filed an Intent to Single Source for Solcon Soft-Start replacement parts and services with an October 2, 2026 filing deadline. Additional activity includes Northside Independent School District in San Antonio, Texas requesting sealed bids for electrical equipment, parts, supplies, and services under IFB 2026098 with a July 1, 2026 deadline, and Sourcewell issuing RFP 061626 for law enforcement equipment on behalf of participating entities across multiple states and Canada with a June 16, 2026 deadline.