Single-Phase Transformers

About Single-Phase Transformers

Single-phase control transformers step voltage up or down for machine control circuits, delivering isolated 110V or 24V power that protects operators and sensitive electronics from line-side disturbances. Our range spans open-core and encapsulated designs from 50VA to 5kVA, sourced from Siemens, ABB, Schneider Electric, Eaton, Hammond, and SolaHD. Primary and secondary voltage combinations — typically 230/400V primary to 24V, 110V, or 230V secondary — plus VA rating, insulation class, and whether the transformer needs inrush current capacity for contactor coils define the specification. Encapsulated units offer higher ingress protection for dusty or damp environments; open-style units favor ventilation and cost efficiency in clean electrical rooms. We stock the most common 100VA to 500VA sizes with multiple secondary taps for immediate despatch, and can source higher ratings and custom voltages to order.