ABB is pleased to announce the addition of Machine Stop pushbuttons to the Compact and Modular pilot device families. These new pushbuttons have a black mushroom head and maintained switching action. (i.e. they are the same as the Emergency Stop pushbuttons except the color of the mushroom head). They are available in the Modular version with a 40mm mushroom head with twist or pull release. The Compact version is available with 30 and 40 mm mushroom heads with twist, pull or key release.