Fermax BUS 2 Power Supply Adaptor Module

Fermax F-3243 BUS-2 / DUOX Power Supply Connection Module

The Fermax F-3243 is an essential connection module required between the power supply unit and the BUS-2 or DUOX system bus. In both BUS-2 and DUOX systems, power and data share the same two wires, so the power supply cannot be connected directly to the bus without disrupting data signals. This module prevents the power supply from interfering with system communications and also permits multiple power supplies to be connected where the installation demands it.

The module should be connected directly to the bus with the shortest cable distance possible. It is supplied in DIN-4 rail format for installation inside an electrical equipment enclosure, or it can be screw-mounted directly to a wall.

Key Features

• Prevents power supply from disrupting bus data signals
• Allows connection of multiple power sources on the same bus
• Electronic fuse protection up to 2.5 A
• DIN-4 rail or screw wall mounting
• Duplicated PWR BUS terminal for simplified wiring
• PREV BUS terminal for signal continuity in multi-source installations
• Indoor installation only — must be mounted vertically

Technical Specifications

• BUS-2 system input voltage: 24 Vdc
• DUOX system input voltage: 18 Vdc
• Output current: up to 2.5 A (electronic fuse protected)
• Current draw: 25 mA or less
• Operating temperature: -5 to +40 degrees C
• Humidity: 0 to 95% (non-condensing)
• Mounting: DIN rail (4 modules) or screw fix

Dimensions

• 70 x 90 x 60 mm (H x W x D)