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, a Commodity code, covers electrical switching components and relays procured by state and local governments for water utilities, municipal facilities, and school districts to control power distribution, motor operations, and equipment activation. State and local buyers source these under framework contracts and as individual line items within broader electrical equipment and parts agreements, typically bundled with switches, contactors, and control devices for plant operations and facility maintenance.

Recent activity concentrates in water utility and municipal facility modernization across the Southeast and West. Hillsborough County Water Resources Department issued ITB-26-00138 in February 2026 for mercury float switches (a closely related control device used to trigger pump operations in wells and lift stations) with a two-year contract and estimated value of $60,000.00. Orange County, Florida solicited electrical and mechanical upgrades at the Eastern Water Reclamation Facility (IFB Y26-604, due April 30, 2026) including replacement of protective relays with Schweitzer microprocessor-based models and control system conversions. Eastern Municipal Water District in Riverside County, California issued RFP RFPAR3928 (due May 9, 2026) for a medium voltage soft starter installation at the Auld Road Booster Station, requiring coordination of control relays and MODBUS RTU communication. The City of Phoenix solicited electrical parts and supplies (IFB 26-FMD-012) for a three-year term beginning October 2025 covering 97 manufacturers including major suppliers of industrial controls. Issuing bodies span water utilities, county facilities departments, and municipal public works operations. Geographic spread includes Florida, California, Arizona, Oregon, Georgia, and Minnesota through cooperative purchasing vehicles like Sourcewell. The code sees steady activity in utility capital projects driven by aging infrastructure replacement and operational modernization cycles, particularly at water reclamation and treatment facilities where relay and soft-starter replacements support equipment control system upgrades.