SL5120RGACB by Danaher

The SL5120RGACB is a five-lamp stack light manufactured by Danaher as part of the Timers and Controllers series. Mounted on machinery or control enclosures, the tower conveys machine status through colored lenses so operators can react quickly to faults, cycle completions, or material calls. An internal wiring harness terminates in copper conductors that exit as wire leads, allowing the device to integrate with relay outputs or PLC discrete points that drive its incandescent indicators.

The light column runs on 120 VAC, a common control-cabinet supply that simplifies power distribution. Each segment contains an incandescent bulb that consumes 6 W, so power supplies and fusing can be sized according to the number of energized tiers. The tower's overall height is 17 in, providing adequate visibility above guard fences without exceeding typical enclosure clearances. A BA9s miniature bayonet base secures every lamp, permitting fast bulb changes during preventive maintenance. The steady operating mode keeps each lens continuously lit while the corresponding control output is active. The lens sequence of red, green, amber, clear, and blue supports the visual communication of different machine conditions. Internal leads use copper conductors to provide low electrical resistance.

For mechanical installation, the housing threads directly into a conduit hub with a 3/4 NPT fitting, creating a sealed pathway for the 18 in lead set. The cylindrical body has a 3.5 in outside diameter, minimizing the footprint on crowded panels. The tower has 5 discrete lenses and a black top cover that helps block ambient glare. Operation remains stable at humidity levels up to 95% RH. All components tolerate ambient temperatures up to 45 °C without derating, supporting operation in indoor factory environments where moderate heat may be present.