Description
Product Name : 855T-L24 Allen‑Bradley Controller module
Product details:
The Allen-Bradley 855T-L24 is a premium, high-performance industrial signal tower (stack light) component manufactured by Rockwell Automation. The “855T” series represents the Control Tower™ 70 mm product line, designed to provide highly visible multi-status indication for machinery, systems, and automated processes.
Specifically, the L24 designation typically refers to a 24V AC/DC LED illumination module (or base/light combination depending on the specific catalog suffix, though universally standardizing on 24V power requirements).
Technical Specifications
| Parameter | Specification |
| Brand / Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Series | 855T Control Tower™ |
| Component Type | 70 mm Stack Light Module / Light Source |
| Voltage Rating | 24V AC/DC (50/60 Hz) |
| Illumination Type | LED (Light Emitting Diode) |
| Operating Function | Steady / Flashing (Depending on exact module configuration) |
| Diameter | 70 mm |
| Enclosure Rating | IP65 / NEMA 4/4X/13 (When properly assembled) |
| Operating Temperature | -25°C to +70°C (-13°F to +158°F) |
| Housing Material | Polycarbonate (UV-stabilized) |
| Certifications | UL Listed, CSA Certified, CE Marked |
Key Product Advantages
- High Visibility & Clarity: The 70 mm diameter paired with high-intensity LED technology ensures excellent brightness and visibility even in high-ambient-light industrial environments.
- Energy Efficiency & Longevity: LEDs consume significantly less power than traditional incandescent bulbs and offer an exceptionally long operational lifespan (often up to 100,000 hours), drastically reducing maintenance downtime.
- Modular “No-Tools” Assembly: The 855T series features a twist-and-lock stackable design. Modules can be easily combined, rearranged, or replaced mechanically and electrically without requiring tools.
- Rugged Industrial Durability: With an IP65 and NEMA 4X rating, the unit is highly resistant to dust, water jets, oil, and harsh chemical washdowns, making it ideal for demanding factory floors.
- Flexible Power Compatibility: The 24V AC/DC rating seamlessly integrates with standard industrial control circuits and PLC outputs.
Installation & Operation Safety Precautions
⚠️ IMPORTANT SAFETY NOTICE
- Power Disconnection: Always isolate and lock out the main power supply before installing, wiring, or modifying the stack light assembly to prevent electrical shock.
- Correct Voltage Verification: Ensure the supply voltage strictly matches the 24V AC/DC specification. Applying higher voltages (e.g., 120V or 230V) will permanently damage the module and pose a fire hazard.
- Gasket Sealing: During assembly, ensure the O-ring seals between modules are properly seated. Misalignment will compromise the IP65 environmental rating, allowing moisture ingress.
- Maximum Stacking Limit: Do not exceed the maximum recommended number of light/sound modules per base (typically up to 5 modules per tower) to prevent overloading the base wiring or mechanical instability.
Target Product Applications
The Allen-Bradley 855T-L24 is widely utilized across automated industries to provide instant visual feedback on system states (e.g., Green = Normal, Yellow = Warning, Red = Fault/Stop). Common applications include:
- Automotive Assembly Lines: Indicating workstation status, material shortages, or line stoppages.
- CNC Machining & Tooling Centers: Monitoring cycle completion, tool breakage, or operator intervention requests.
- Packaging and Material Handling: Visualizing conveyor jams, sorting errors, or bin-full statuses.
- Semiconductor & Cleanroom Equipment: Low-profile, reliable status broadcasting without generating particulate contamination.
- Food & Beverage Processing: Deployable in washdown areas where robust environmental sealing is mandatory.
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
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
The following are other related models. If you can’t find the product you need, please contact us. Thank you
| 440F-M0727DYNN | Allen‑Bradley |
| 440F-M0921DYNN | Allen‑Bradley |
| 440L-R4F0020-Q | Allen‑Bradley |
| 440L-R4F1570-Q | Allen‑Bradley |
| 440T-MDALE100B0C | Allen‑Bradley |
| 440T-MDALE100B0D | Allen‑Bradley |
| 440T-MDALE10AAAB | Allen‑Bradley |
| 440T-MDALE10ABAC | Allen‑Bradley |
| 440T-MDALE10ABAD | Allen‑Bradley |
| 440T-MDALE10APAR | Allen‑Bradley |
| 440T-MDALE10BABB | Allen‑Bradley |
JUSTWELL PTE. LTD. sells new and discontinued products, and purchases such specialty products through independent channels. JUSTWELL PTE. LTD. is not an authorized distributor, distributor, or representative of the featured products on this website. All product names/images, trademarks, brands, and logos used on this website are the property of their respective owners. Product descriptions, descriptions, or sales with these name images, trademarks, brands, and logos are for identification purposes only and do not imply any association or authorization with any rights holders.
This article is from the official website of JUSTWELL PTE. LTD. If reprinted, please attach this link:https://www.justwellcenter.com/
All other brand or product names mentioned in this document may be trademarks or registered trademarks of their respective holders.
