PS Series 24Vac DIN Mount Power Supplies
35mm DIN mount power supply / step-down transformer
1.5VA or 40VA output @ 24Vac
120Vac, 208Vac, 240Vac, 277Vac, or 480Vac input
For stand-alone use or as an option for the TP and LPC series proportional output solid state power controllers
Frequently asked questions
What is a PS series 24Vac DIN mount power supply?
What is meant by the VA (volt-ampere) rating on a PS series power supply?
A VA (volt-ampere) rating is used to determine power rating of the power supply and is basically equivalent to watts. The PS-120, PS-240 and PS-480, along with the “-3” suffix three-phase versions, have a 24Vac output and rated to 1.5VA. Therefore, the maximum current they can provide is 1.5VA ÷ 24Vac = 62.5mA. The PS-120-208-240, PS-120-208-240-277, and the PS-480-40VA 24Vac power supplies are rated to 40VA. Therefore, they are capable of providing 40VA ÷ 24Vac = 1.67 amps of output current.
What do the various wire colors used for on the 40VA 24Vac PS series power supplies?
The output (secondary) voltage of a 40VA PS series power supply is always 24Vac, with the wires being either blue and yellow, or yellow/white and yellow, depending upon the power supply you’re using. The input (primary) wire color is selected according to the AC mains supply voltage. For example, the blue and yellow wires on a PS-120-208-240 provide the 24Vac output. If the AC mains voltage is 120Vac, then the black and white wires would be connected to the AC mains. If the AC mains voltage is 208Vac, then the black and red wires would be connected to the AC mains. Finally, for a 240Vac AC mains, the black and orange wires would be connected to the AC mains. The black wire is the common connection on all versions.
Additional information is provided in the product datasheets.
What are the dimensions and weight of a PS series 24Vac power supply?
The dimensions and weight vary by part number. Each product datasheet provides the dimensions for each part number. The approximate weight for each product is provided below;
Where are the PS series 24Vac power supplies commonly used?
The PS-40VA series power supplies are essentially used wherever a 24Vac source is needed with a total VA rating of less than 40VA (1.67 amps). There are countless applications, including security systems, HVAC systems, mass transit panels (busses, trains, etc..), access control, video monitoring, and more.
The PS-120, PS-240 and PS-480, along with the “-3” suffix three-phase versions, are also commonly used for stand-alone applications. However, they’re most commonly used with our LPC and TP series phase angle and burst fire solid state relays and power controllers. These products can proportionally control power to AC loads up-to 100 amps and require an auxiliary 24Vac power supply. The PS 1.5VA power supplies can be mounted to the LPC or TP series power controller assembly as a standard option. Please contact us if you’d like additional information - 800.879.7918 / email@example.com