+44 203 286 8189 steve.jones@westside-int.com

Open and enclosed power supplies

To ensure reliable operation of Rosahl  membrane dehumidifiers under all operating conditions it is important to use a switching power supply (PSU) with the performance specified in the relevant membrane specification sheet.

Service life and reliability of the power supply are affected by the ambient temperature. Depending on the ambient temperature of the power supply installation and the supply voltage used, the PSU may require derating. (Please refer to the specification)

Westside offers a range of CE and UL marked PSUs in open and semi-enclosed construction. Go here for the catalogue page

Open construction: Otherwise known as a open board type PSU has an IP00 rating. The open board PSU has four mounting points in the circuit board.

When using mounting posts to install the open board switching power supply, ensure the posts do not exceed the 8mm hatched area indicated.  Allow minimum 8mm clearance from the mounting surface.

Model BWT3.3SX-U1A for size 7 membranes
Model BWT3.3SX-P-U1A for size 7 membranes

Semi-enclosed: The semi-enclosed version is also IP00, but with cover plates to provide additional mechanical protection and simpler installation.

The enclosed PSU has four mounting points in the base and two along one side. Use all mounting points and do not over tighten fixings. The semi-enclosed PSU is not suitable for mounding on the underside of the mounting plate

Open-board type power supplies

MembraneInput (AC)DimensionsOutput (DC)ModelOptional cable
harness
Terminals by JST
M-2J1R
M-3M1R
M-3J1R
MDL-3
85-264V50W x 105L x 21H @ 73g
3V 2A (10W)BWS3.3SX-U1A
Cable-BW1Input: VHR-5N
Output: XHP-4
M-5J1R
MDL-5
85-264V50W x 125L x 22H @ 95g
3V 3A (15W)BWM3.3SX-U1ACable-BW1Input: VHR-5N
Output: XHP-4
M-7J1R
MDL-7
85-264V56W x 133L x 26H @ 135g
3V 6A (30W)BWT3.3SX-U1ACable-BW2Input: VHR-5N
Output: VHR-4N
M-10J1R
85-264V56W x 195L x 31.6H @ 210g
3V 10A (50W)BWB3.3SX-U1ACable-BW2Input: VHR-5N
Output: VHR-4N
Optional cable harness
The cable harness includes input and output terminals with 400mm cables

Semi-enclosed type power supplies

MembraneInput (AC)DimensionsOutput (DC)ModelOptional cable
harness
Terminals by JST
M-2J1R
M-3M1R
M-3J1R
MDL-3
85-264V32 x 57 x 125 @ 175g3V 2A (10W)BWS3.3SX-P-U1A
Cable-BW1Input: VHR-5N
Output: XHP-4
M-5J1R
MDL-5
85-264V32 x 57 x 145 @ 240g3V 3A (15W)BWM3.3SX-P-U1ACable-BW1Input: VHR-5N
Output: XHP-4
M-7J1R
MDL-7
85-264V36 x 66 x 165 @310g3V 6A (30W)BWT3,3SX-P-U1ACable-BW2Input: VHR-5N
Output: VHR-4N
M-10J1R
85-264V41 x 65 x 225 @ 450g3V 10A (50W)BWB3.3SX-P-U1ACable-BW2Input: VHR-5N
Output: VHR-4N