5WG1554-1DB31 N 554D31 KNX Universal Dimming Actuator 4x300VA 1000VA Bundling 8MW Rail

The N 554D31 is a four-channel universal dimmer in the GAMMA range, featuring unique channel bundling capability. Neighboring outputs can be switched in parallel in groups of two, three, or all four channels, allowing the nominal 4 x 300 VA capacity to be concentrated into a single 1000 VA circuit. This makes the device suitable for both standard four-zone lighting applications and heavy loads such as large chandeliers or hall dimming circuits.

• Protocol: KNX device for switching, dimming and scene control in building automation; bus-powered electronics with 7.5 mA bus current
• Outputs: 4 dimming outputs; each channel supports up to 300 VA, with bundling capability up to 1000 VA for all four channels
• Mains Data: Rated operational voltage AC 230 V, rated frequency 50/60 Hz, rated current 1.3 A, supports dimmable loads including LED without minimum load
• Protection: Electronic protection per output against overload, short circuit and temperature rise with status reporting to bus
• Connection & Control: Maintenance-free terminals for 0.5 to 2.5 mm² conductors; manual operation buttons for switching, dimming and direct mode activation

Note: All values refer to standard installation position. In other mounting positions, permissible load drops to 80%.

DIN-rail mounted device for TH35 rail to DIN EN 60715, width 8 module widths (144 mm)

The unique bundling capability makes this dimmer ideal for diverse applications. Banks, hotels, and conference centers utilize it for large dimmable circuits, while restaurants, church interiors, showrooms, and residential living areas benefit from the four separate channels for layered lighting. The device is also well-suited for modern LED retrofit projects where individual LED loads per zone are modest but the number of zones is high.