Integrating thermal disconnect apparatus in series with MOV disc, TPM Series ensures that if unit overheats it is disconnected from circuit. This helps eliminate common failure modes when used in field for lightning protection and inductive/capacitive load switching. With surge ratings of 25 kA and 50 kA, respectively, Models TPM-25 and TPM-50 come in broad range of voltage ratings starting at 150 V, and provide floating point remote signaling contact for fault indication.