PRAESENSA Power supply module | PRA-PSM24, PRA-PSM48 | en 169
Bosch Security Systems B.V. Installation manual 2019.11 | V1.00 |
16.5.1 Parts included
The box contains the following parts:
PRA-PSM24
Quantity Component
1 Power supply module 24V
1 Set of screw connectors
1 Manufacturer's datasheet
PRA-PSM48
Quantity Component
1 Power supply module 48V
1 Set of screw connectors
1 Manufacturer's datasheet
No tools or cables are provided with the devices.
16.5.2 Mounting
The power supply unit can be mounted on a 35mm DIN‑rail in accordance with EN60715. The
device must be installed vertically with the mains power input terminal block down.
Safety precautions:
1. Switch main power off before connecting or disconnecting the device.
2. To guarantee sufficient convection cooling and prevent that the unit goes into thermal
protection, it is important to keep a distance of at least 100mm above the device,
200mm below the device, as well as a lateral distance of 20mm to other units.
3. Note that the enclosure of the device can become very hot depending on the ambient
temperature and load of the power supply. Risk of burns!
4. Only plug in and unplug connectors when power is turned off.
5. Do not introduce any objects into the unit.
6. Dangerous voltage present for at least 5minutes after disconnecting all sources of power.
To snap the device on a DIN‑rail, follow the procedure below:
1. Tilt the device slightly upwards and put it onto the DIN‑rail.
2. Push the device downwards until stopped.
3. Press against the bottom of the front side to lock the device on the rail.
4. Shake the unit slightly to ensure that it is secured.
For dismounting the device:
1. Pull or slide down the latch at the rear side bottom with a screwdriver.
2. Tilt the device upwards.
3. Release the latch, and pull the device from the rail.
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