XB7NS9444 is a 30mm gray mushroom-head emergency stop push button manufactured by Schneider Electric. It is a non-illuminated, momentary, NO/NC contact, 600V rated pushbutton. The head of the pushbutton is made of gray plastic, and the actuator is spring-return to ensure that it returns to its normal position when released from the depressed position. The pushbutton also features a unique yellow ring that clearly indicates the emergency configuration. It is part of Schneider Electric's XB7 series of emergency stop push buttons.