This Schneider Electric Harmony 9001K emergency stop / shutdown 30mm mushroom head modular red push-button has 2 positions, operates with a latched turn to release mechanism. It has a chromium-plated metal bezel and has 2 x NO + 2 x NC contacts. It is supplied with contact block and uses screw-clamp terminals. It fits in a 30mm hole. It has a chromium-plated metal bezel. This emergency stop / shutdown button, also called EMS (Emergency Machine Stop) and EMO (Emergency Off), is easily installed into a standard 30mm diameter cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance thanks to a clear color and a prominent 40mm mushroom shape. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66, making it ideal for operation in harsh environments. Metal bezel. Ideal for severe environments, especially applications requiring high impact and vibration resistance. Simple modular design facilitates post installation servicing, modification and adaption of machines by non-specialists. Designed to fit in a standard 30mm cutout, ensuring compatibility when installing in pre-existing machinery. Latched emergency stop mechanism for maximum safety of operators. Impact and corrosion resistant metal bezel and body ensures product continues to operate even after severe accidents. High performance, International standards & certifications (Marine ABS certification, IP66, Type 1, 2, 3, 3R, 4, 12 and 13).