Can the factory leads of the SDSA1175 surge protective device be extended by splicing or adding conductor length, without violating manufacturer specifications or affecting device performance?

No. To ensure optimal performance, the SDSA1175 should be installed as close as possible to the protected circuit to minimize lead length. Each additional foot of conductor can introduce approximately 160 V of let-through voltage (based on a 6 kV / 3 kA, 8/20 µs surge). The device’s Voltage Protection Rating (VPR), as tested per UL 1449 standards, is measured six inches from the enclosure. Square D does not recommend extending the leads, as doing so may alter the clamping voltage from published specifications.

Released for: Schneider Electric USA