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+1 (217) 579-8045Dongan's 50 series industrial control transformers have been designed to the highest NEMA and industrial standards. The product features screw terminal connections, high regulation low temperature rise, a wide variety of voltage combinations up to 5000va in many cases. In addition, we do many specials in this same series. We also offer primary and secondary fuse kits sold as an aftermarket addition. All Copper WindingsRugged coil mounted screw terminalsUL Class 105C insulation system, 55C temperature rise through 750 VAUL Class 180C insulation system, 115C temperature rise 1000 VA and aboveAll designs rated 50 / 60 HertzPrimary fuse blocks and secondary fuse holders availableCombination screw heads for ease of installationMeets or exceeds UL 506, NEMA ST-1 and ANSI standards.