440G-T27129 is a Guard Master Type 4, 4-1/2 Ton Armature Release Safety Switch from Rockwell Automation. It provides a rugged, reliable contactor-type, low-resistance contact arrangement for machine armature releases and control. This switch features a contact arrangement rated for 4-1/2 amperes and a current rating of 12 amperes, with an operational range of 85 to 600 volts AC. It has a manual toggle-style, heavy-duty handle/contact lock and twist-lock feature. It is also IP67 rated with corrosion-resistant contacts and is UL508 listed.