Category: IR-TEC

The PPU-300 is an isolated class 2 switching mode

power supply device for parallel sensor connection

up to maximum 150mA capacity. With proper

control circuitry, the load can be turned ON and

OFF automatically based on inputs from connected

occupancy sensor, control device or manual control

button. Additional inputs allow connection with control

from timer, BAS and/or manual switch for broader

applications, such as hold ON or hold OFF control.

It can meet both automatic OFF and bi-level switching

with manual ON control required by specific energy

codes. Various control modes can be achieved

with different wiring connections. Only basic wiring

diagrams are illustrated. Consult with an IR-TEC team

member if a more complex wiring diagram is required.

FEATURES

• Class 2 switching mode power supply

• Control up to 20A of load capacity

• 120/277VAC universal voltage power

• DC and relay status LED indications

• Zero crossing relay switching circuitry

• Low voltage DC over current protection

• BMS Hold ON & Hold OFF applications

• Manual ON and bi-level switch control

• Versatile energy efficient load control

OVERVIEW

The PPU-300 is a full featured power pack and

controller for low voltage lighting control system. It not

only supplies 24VDC power for the operation of

multiple low voltage occupancy sensors, but also

provides line voltage load switching in response to

signals from connected sensors or control devices.

The unit can be attached to a junction box through a ½

inch knockout with the designed threaded nipple and

locknut. It may also be mounted into fixture cable trays

or located inside an adjacent junction box for specific

local code requirements.

APPLICATION

• Light Control

• HVAC Control

• Building Management

The PPU-300 can be applied to control lighting circuits,

motors, self-contained air conditioners, VAV systems,

fans and motorized damper controls. By connecting low

voltage occupancy sensors, momentary switches and

PPU-300’s, bi-level switching with manual ON operation

can be achieved. Hold ON input is ideal for areas that

require overriding the occupancy sensor to force the

lighting ON during business hours.