TMOV34S Thermally Protected Varistors

Littelfuse TMOV®34S Thermally Protected Varistors consist of a 34mm square-format varistor element (MOV) with an integral thermally activated element. This element is designed to open in the event of overheating caused by abnormal overvoltage or limited current conditions. These devices have a high peak current rating to 40kA. An option of the TMOV34S series is a "monitor" lead, which may be connected to signaling circuity to indicate if the MOV has been disconnected from the circuit. Littelfuse TMOV34S Thermally Protected Varistors offer quick thermal response due to the close proximity of the integrated thermal element to the MOV body. The integrated configuration also offers lower inductance than most discrete solutions, resulting in improved clamping performance to fast overvoltage transients. Typical applications include SPD products, AC panel-protection modules, uninterruptable power supplies (UPS), inverters, and AC/DC power supplies.