I am not familiar with the product you mention.? Evaluate what is used to clamp the voltage?? Is the device UL1449 Edition 3 or 4 listed?? What is the let through voltage?? An on line search did not provide any of this information.? I suggest avoiding any product that is not UL1449 Ed 3 or 4 listed.? And, you desire a product that has a minimal let through voltage when tested to the UL specifications.? That should be listed on the product literature.? You desire something around 600 volts for a 120 volt circuit.? Avoid any product that is not UL listed and does not offer the let through voltage rating.? Review the Motorola R56 Standards referenced above for suitable specifications.? You desire something that meets those specifications or at a bare minimum is UL1449 Ed 3 or 4 listed with a clamping voltage around 600 V for a 120 V circuit.? For an in line or sup-panel device you desire line to line, line to neutral, neutral to ground and line to ground protection.? No concern about neutral to ground protection at the main panel as those conductors are required to be bonded together at the main disconnecting device where you would install your first device.? Series inductance is a plus but you still must have something to limit the spikes/surges to a safe level.? And, you want a safe device therefore the UL listing.? Good surge protection practices are to offer a suitable unit at the main panel, another at the sub panel if there is one and a device at the load to be protected.? Suitable protection is not as simple as installing a device at the load you desire to protect.? For reasonable protection you desire a Type 1 or 2 device on the main panel, a type 2 device on any sub-panel and a type 3 device at the load to be protected.? For devices installed at the panel the conductors must be routed as straight and be as short as possible. Typically an over current protective device is required at the panel.? It is very important to follow the manufacturers installation instructions.? 73? W3YVV
