Description
Product Name : 855E-LL24B Allen‑Bradley Input module
Product details:
The Allen-Bradley 855E-LL24B is a high-performance LED luminous module belonging to the ControlTower™ 50 mm Stack Light family. Manufactured by Rockwell Automation, this series is designed to provide highly visible, multi-status optical and audible signaling for machines, systems, and processes.
The 855E-LL24B specifically denotes a blue, continuous-illumination LED module operating at 24V AC/DC.
Technical Specifications (Product Parameters)
| Parameter | Specification |
| Brand | Allen-Bradley (Rockwell Automation) |
| Product Series | ControlTower™ 50 mm Stack Lights (855E) |
| Catalog Number | 855E-LL24B |
| Component Type | Light Module (Illuminated Block) |
| Light Source | LED (Light Emitting Diode) |
| Illumination Type | Continuous (Steady Light) |
| Lens/Light Color | Blue |
| Operating Voltage | 24V AC/DC (50/60 Hz) |
| Diameter | 50 mm |
| Housing Material | Polycarbonate (UV-stabilized) |
| Current Consumption | ~30 mA to 40 mA |
| Environmental Rating | UL Type 4/4X/13, IP66 (when properly assembled) |
| Operating Temperature | -25°C to +50°C (-13°F to +122°F) |
| Certifications | c-UL-us Listed, CE Marked, UKCA, RCM |
Product Advantages
- High Visibility & Clarity: The intense blue LED provides sharp, unmistakable visual signaling even in brightly lit industrial environments.
- Exceptional Durability: Built with impact-resistant, UV-stabilized polycarbonate, ensuring a long operational life and resistance to harsh industrial cleaning agents.
- Energy Efficient: LED technology draws minimal current compared to traditional incandescent bulbs, reducing energy consumption and heat dissipation.
- Modular “No-Tools” Assembly: Features a quick-release, twist-and-lock mechanism that allows modules to be stacked or rearranged easily without the need for tools.
- High Ingress Protection: Boasting an IP66 and NEMA 4/4X/13 rating, it is completely dust-tight and capable of withstanding high-pressure water jets, making it ideal for washdown environments.
Product Applications
In industrial automation, blue stack light modules are typically reserved for specific status indications. Common applications for the 855E-LL24B include:
- Material Replenishment: Signaling that a machine is running low on raw materials, parts, or packaging.
- Maintenance Assistance Required: Indicating that an operator requires assistance from a technician or supervisor without stopping production.
- Non-Critical Status Changes: Displaying specific process cycles, such as a completed batch or a machine waiting for user input.
- Automated Production Lines: Integrated into automotive, food & beverage, and packaging machinery for clear zone-status indication.
Crucial Considerations & Installation Notes
⚠️ WARNING: Safety First
Always disconnect the main power supply before installing, removing, or wiring the stack light modules to prevent electrical shock or damage to the equipment.
- Stack Limits: A maximum of 5 light/audio modules can be stacked vertically on a single base unit to ensure structural integrity and proper power distribution.
- Base Compatibility: The 855E-LL24B must be used with compatible 855E series base units (surface mount, vertical mount, or pole mount) and termination caps.
- Environmental Sealing: Ensure the O-ring gaskets between modules are properly seated during the twist-and-lock assembly to maintain the IP66 water-resistance rating.
- Voltage Verification: Confirm your control circuit is strictly supplying 24V AC or DC. Applying higher voltages (like 120V or 240V) will permanently damage the internal circuitry of the module.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
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