UNSPSC 32121603: Variable resistors or varistors

UNSPSC 32121603 Variable resistors or varistors is a Commodity code that in practice encompasses electrical protection, control, and distribution components including protective relays, motor control centers, electrical switchgear enclosures, and associated electrical parts and assemblies used in utility, municipal water and wastewater, and transit infrastructure. State and local buyers procure these components primarily through utility authorities, county public works and facilities departments, transit authorities, and municipal water treatment facilities to maintain, upgrade, and replace aging electrical protection and control systems in mission-critical infrastructure. The work ranges from replacement of aging protection relay fleets with standardized, interoperable equipment to fabrication of custom pump station control panels with integrated motor controls, breaker assemblies, and SCADA connectivity; from annual blanket purchase agreements for general electrical components and ballasts to single-unit, emergency procurements of replacement solenoids. Issuing bodies include special-purpose utility authorities (Kissimmee Utility Authority), county boards of commissioners (Hillsborough County, Bay County, Gwinnett County), cities (Tampa, Arlington, Fort Worth), school districts (Northside Independent School District), and transit authorities (Trinity Metro).

Recent activity concentrates in Florida and Texas, with notable procurement from Kissimmee Utility Authority (sole-source RFQ for SEL 451 and SEL 751 protection relays, August 24, 2026 close); Hillsborough County Board of County Commissioners (ITB for pump station control panels and enclosures valued at $3.66 million over two years, September 29, 2026 close, with ten bidders competing; and ITB for authorized Schneider Electric components, estimated $519,787.19 over two years, June 18, 2026 close); Northside Independent School District (IFB for electronic equipment, parts, repairs, and services, September 24, 2026 close); Trinity Metro in Tarrant County, Texas (IDIQ for electrical materials, August 20, 2026 close); and City of Tampa (RFQ for solenoid supply and installation, June 19, 2026 close). Gwinnett County, Georgia posted an annual contract RFQ for approximately 200 units each of 1500W metal halide ballasts and capacitors (June 12, 2026 close). A Sourcewell cooperative purchasing RFP for law enforcement equipment (June 16, 2026 close) spans multiple Washington state counties and participating entities nationwide but shows minimal connection to the variable resistor or varistor commodity scope.