Series 36 Signaling Transformers are designed to operate a wide variety of low voltage devices including complete signaling systems, AC horns and bells, and low voltage relays and controls. All 36 Series are supplied with a spacious wiring compartment and double knockouts for ease of installation. NEMA Type 1 indoor enclosure.VA Capacity range from 50 VA to 1000 VA.Available primary voltages include 120, 240, and 480.60 Hertz.Multiple secondary voltages of 4-8-12-16-20-24.Primary and secondary leads are partitioned in separate wiring compartments.