📍 308 Sw 3rd Ave, Colman, SD, 57017
📞 605-534-3555
T & R Electric Supply Company Inc. Has Been Serving the Industry Since 1961. Specializing in rewinding and reconditioning power and distribution transformers, T&R continues to make customer satisfaction its top priority. T&R Electric is the industry leader in the transformer rebuilding business with the nation’s largest inventory of transformers. • New and rebuilt units from 3 KVA to 30 MVA • Distribution and power • Dry type transformers • Voltage regulators • Complete substation structures and components • Re-closers and circuit breakers • Overhead and underground switchgear
📍 469 Ave, Colman, SD, 57017
📞 888-907-0732
📍 Serving Your Area, Colman, SD, 57017
📞 605-206-7326
📍 469 Ave, Colman, SD, 57017
📞 605-836-7290
📍 214 S Florence Ave, Colman, SD, 57017
📞 605-983-8235
📍 469 Ave, Colman, SD, 57017
📞 605-836-7955
Updated Nov 2026
📍 Serving Your Area, Colman, SD, 57017
📞 605-941-3480
🌐 www.sdtech.biz
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📍 112 N Main St, Colman, SD, 57017
📞 605-534-3611
📍 200 S Loban Ave, Colman, SD, 57017
📞 605-534-3533
📍 301 S Florence Ave, Colman, SD, 57017
📞 605-684-9997