Hubbell Press Releases

Tamper-Resistant Receptacle from Hubbell Wiring Device-Kellems: Unlike Any Other
Wednesday, June 15, 2016

Shelton, Conn. – June 15, 2016Hubbell Wiring Device-Kellems has developed a patented cam-action mechanism as part of its new Tamper-Resistant Receptacle.  The new Hubbell TR shutter eliminates the frustrations and difficulty associated with conventional tamper-resistant technology.


Most TR mechansisms rely on the force of the plug's blades to slide an interlocked ramp mechanism open. Common molded plugs have blades with sharp edges that cut into the ramp instead of sliding it. The friction caused by a sharp metal plug blade on a sliding plastic TR ramp can make plug insertion difficult or impossible.  The Hubbell Tamper-Resistant mechanism uses hinged trapdoors attached to interlocked cams. When two plug blades swing both doors open simultaneously,  the interlocked cams slide an insulating barrier out of the way. Thanks to the friction-free design of the mechanism’s trapdoors, this innovative solution requires much less insertion force. What originally took pounds of pressure now requires only ounces – the plug will slide in effortlessly.


“By eliminating friction, we created a smoother, more familiar feeling plug insertion, regardless of the type of plug being inserted,” says Pat Close, product manager for Hubbell Wiring Device-Kellems. “The new solution is just as efficient at ensuring safety, but it won’t prevent you from plugging in your charge cord, or appliance.”


Hubbell Tamper-Resistant Receptacles are ideal for use in residential settings, such as single-family homes and multifamily housing. They’re also perfect for hotel rooms, classrooms with young children, pediatric healthcare facilities, college dorm rooms, assisted living facilities, and childcare facilities.


For more information about the Tamper-Resistant Receptacles from Hubbell Wiring Device-Kellems, contact your Hubbell sales representative or visit