Siemens Sirius Act light blocks are an add-on block that mount to the rear of a push button switch, alongside the contact blocks to act as an indicator light. The light blocks are turned on when the push button is pressed. Light blocks illuminate through the button head.

Siemens Sirius Act contact blocks are electrical circuit connectors that are used to turn on (make) or turn off (break) an electrical circuit. Siemens contact blocks are commonly found connected to switches, relays, and circuit breakers. Once these devices are active, the contact block allows a current to flow and complete a circuit.

Powerful machines need powerful controls. SIRIUS ACT offers you a unique portfolio of elegantly designed push buttons, indicator lights and switches that are the perfect embodiment of style, intelligence, and physical toughness. Constructed with genuine metal and high-grade plastics, engineered with smart functions and communication capabilities, these new push buttons, indicator lights and switches have been extreme element tested to ensure reliability for your most mission critical operations.