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

CE logo x 150

ur x 150

RoHS

Rosahl power supplies

The correct power supply (PSU) for Rosahl micro dehumidifiers requires a suitable DC output characteristics for the reliable operation. The manufacturer recommends a constant current limiting PSU with an output current suitable for the rating of the membrane to be used.

Fold-back and hiccup power supplies

Other types of power supplies may be used, and users should refer to their preferred suppliers for performance details. A fold-back type PSU may be used provided the output voltage does not fall below 1.8V DC during overload conditions. The output characteristic generated by a hiccup mode power supply however, is not suitable as Rosahl power supplies.

Rosahl switching power supplies

A range of suitable low-cost enclosed and open board type switching PSUs suitable for use with Rosahl membranes is available from Westside International. These constant current limiting power supplies are suitable for an input voltage range of 85 to 264V AC and have a 3VDC output. They are RoHS compliant and are marked for CE and UL. The correct models are selected from the tables below.

They use standard input and output connectors from the VH Series manufactured by Company JST, and these are widely available: the connector details are also given in the table. The optional cable harnesses provide both input and output cables and these are supplied with 400mm cables. Model BW1 is suitable for membranes up to size 5: BW2 is suitable for membrane sizes 7 and 10.  Rosahl power supplies are suitable for mounting in five or six orientations.

General Specifications

– Rosahl enclosed and open board type power supplies: CE; UL; RoHS compliant as follows:

– Conduction noise: EN55022 Class B; FCC Part15-B Class B, VCCI Class B,

– Safety standards: EN60950-1 certificate; UL60950-1, CSA60950-1,

– CE marking (low voltage directive) self-declared

– RoHS directive compliant

Open board type power supplies

Rosahl open board power supply

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

Enclosed Power Supplies

DSC_9981

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