UNSPSC 39122312: Polarity relay

A direct current relay that control the actions in accordance with the polarity of current in the coil by using interaction between the magnetic flux induced by permanent magnet and that induced by coil.

UNSPSC 39122312 Polarity relay is a Commodity code representing electrical control and switching components that state and local governments procure for water and wastewater infrastructure, pump station operations, and fleet maintenance. The recent solicitation activity under this code shows state and local bodies purchasing motor control centers, control panels, soft-start replacement parts and services, and integrated electrical equipment for lift stations and treatment facilities. Issuing bodies include city wastewater and utility departments, county water districts, independent school districts, and municipal water authorities across multiple states. The work spans fabrication of UL 508A-certified control cabinets and enclosures, replacement of programmable logic controllers and SCADA systems, and procurement of motor control centers with associated installation, programming, testing, and operator training.

Recent activity concentrates in Florida and the Southwest. The Hillsborough County Board of County Commissioners issued ITB2600393 for pump station control panels and other enclosures on August 28, 2026, with bids due September 29, 2026, on an estimated $3.66 million two-year contract requiring UL 508A certification, NEC compliance, and weekly fabrication of two to four complete panels plus additional enclosures. The City of Tampa's Wastewater Department filed an Intent to Single Source on October 9, 2026, for Solcon Soft-Start replacement parts, units, and services, restricting competition to authorized manufacturer's distributors or dealers capable of providing warranty service and maintenance. The City of Bartow issued a procurement for a Master Lift Station Motor Control Center installation with de-energization, demolition, and electrical work per Florida Building Codes and NEC standards. The City of Santa Fe, on behalf of Buckman Direct Diversion, released RFP FY26RFP036 on August 17, 2026, seeking PLC replacement and SCADA modifications across four treatment facilities using Schneider Electric Unity Pro XL software, with proposals due December 18, 2025, and local Santa Fe preference available at 3 to 6 percent evaluation weight. West Basin Municipal Water District in California issued RFBTH0120 for TRWRP 93 Motor Control Center replacement with a mandatory pre-bid meeting on March 12, 2026, requiring California Class C licensing and prevailing wage compliance.