Siemens Continuous light element, green, 12 - 230VAC/DC, Ø 70mm Part number 8WD4400-1AC

Product Overview

The 8WD4400-1AC is a continuous-light element (green) designed for the SIRIUS 8WD44 signal-tower / signalling-column system. As a modular “light module,” it serves as a signalling beacon to visually communicate machine or process status when installed on a column body in industrial automation, machine controls or plant signalling applications. The module accepts AC or DC supply (12–230 V) and is suitable for robust industrial and control-cabinet environments.

Key Features

• Green continuous-light element for SIRIUS 8WD44 signalling columns
• Operating voltage: 12 … 230 V AC or DC — wide-range compatibility for different installations
• Signal type: steady (continuous) light (not flashing by default)
• Module diameter: 70 mm — standard for 8WD44 columns (large-column type)
• Bayonet-lock mounting — enables fast, secure mechanical and electrical connection to column stack
• Protection class: IP65 — dust-tight and resistant against water jets / wash-down, suitable for industrial environments
• Operating ambient temperature: –20 °C … +60 °C — suitable for standard industrial conditions
• Compact height: ~ 65.5 mm — compatible with multi-element column stacking

Technical Specifications

• Article Number: 8WD4400-1AC
• Product Type: Continuous-light module for 8WD44 signalling column
• Signal Colour: Green
• Supply Voltage: 12 … 230 V AC/DC
• Light Source Base / Socket: BA 15d (light source inserted separately)
• Outer Diameter: 70 mm
• Module Height: ~ 65.5 mm
• Protection Rating: IP65 (when correctly assembled/mounted) — suitable for industrial environments
• Temperature Range (Operation): –20 °C … +60 °C
• Mounting Method: Bayonet lock — for fast stacking on 8WD44 column bodies
• Intended Use: Visual signalling / status indication in modular signal-tower assemblies (status, warnings, machine state, alarms)

Compliance & Standards

• Part of Siemens SIRIUS 8WD4 modular signalling-column series — fully compatible with 8WD44 column bodies, connection and mounting accessories
• Designed for industrial use — IP65 ingress protection, suitable for dust, water spray, and wash-down environments
• Compatible with standard wiring and lighting sockets (BA 15d), allowing flexible bulb choice (incandescent, LED, etc.) per application requirements

Applications

The 8WD4400-1AC light module is used as a status indicator in modular signal columns — e.g. on machines, production lines, processing plants, conveyors, or control-panel enclosures — to signal normal operation, readiness, stand-by, or green-light “OK / go” conditions. It is suitable for indoor or moderately exposed industrial environments where a robust, visible, and modular signalling solution is needed. The modular nature allows stacking with other light or acoustic modules for multi-state signalling towers.