Patent ID: 8761586

Claim:
An electrically heatable honeycomb unit, comprising: a honeycomb body being a catalytic converter and having cavities formed therein through which a fluid can flow; a power feed line having a sleeve attached to an outside of said honeycomb body; at least one power distribution structure, said power distribution structure being connected to a power source via said power feed line, said power distribution structure delimiting said honeycomb body; and at least one closed-loop control element made of a material with a positive temperature coefficient (PTC) and can be placed at least in thermal contact with the fluid flowing through said honeycomb body, said at least one closed-loop control element disposed only in at least one of said power feed line or said power distribution structure, said at least one closed-loop control element being formed at least partially in said sleeve, said closed-loop control element configured to trip and thus decrease a flow of current upon the fluid raising said closed-loop control element above a closed-loop control temperature.