OVERVIEW

Official designation: Allen-Bradley 855T-B24TL5 (Control Tower Stack Light, Steady LED Module)

Role/Application: A 70 millimeter diameter stack light module with a steady amber LED, used for clear visual status indication in industrial environments requiring high visibility and IP65/NEMA 4X protection.

KEY SPECS SUMMARY

Power: 24 Volts AC/DC, 29 milliamperes current draw

Interfaces / Ports: Socket mount (connection via base)

Indicators: Steady Amber LED

Operating Temp: Minus 25 degrees C to plus 70 degrees C

Platform / Compatibility: 70 millimeter 855T Control Tower series

Limit: 3550 millicandela maximum luminous intensity

Lifecycle: Discontinued (Effective October 1, 2019)

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the estimated operational lifespan of the LED light source for the 855T-B24TL5 module?

A: The long-life LED light source is rated for up to 100,000 hours of operation.

Wiring & Installation:

Q: What wire size is recommended for connecting the 855T-B24TL5 module to the base?

A: The recommended maximum wire size for connection terminals on the base is 0.5 square millimeters.

Troubleshooting & Compatibility:

Q: What environmental rating does the 855T-B24TL5 module have for dust and moisture resistance?

A: The module carries an environmental protection rating of NEMA 4X, equivalent to IP65.

Replacement & Upgrades:

Q: What is the current replacement series for the discontinued Allen-Bradley 855T stack light product line?

A: The current replacement options are found in the newer Allen-Bradley 855M or 855P signaling device families.