Schneider Electric (Square D) 1S1F Transformer 1kVA 240/480V PRI 120/240V SEC

The Schneider Electric Square D 1S1F is a 1 kVA dry-type transformer that is widely used in HVAC equipment. It serves as both an isolator and a voltage converter. The transformer may power lower-voltage HVAC components by reducing an incoming voltage of 240/480 volts to a lower voltage of 120/240 volts. Furthermore, it separates the power entering into the primary circuit from the power leaving the secondary circuit, protecting delicate equipment from potential primary side ground faults and voltage spikes. HVAC equipment is more dependable and has a longer to this isolation feature. Essentially, the 1S1F serves as both a voltage adapter and a safety precaution.