Surge Suppressor for ePMP 1000 GPS AP and PTP

Products ePMP
2

The 600SS device is not compatible in general with 802.3 PoE derivatives, and was designed to Canopy (PMP100 and PMP450) and earlier radios, with up to 100Base-T Ethernet and proprietary ~20VDC PoE. I am attaching the circuit diagram 600SS_iss_e_sht1.pdf I received many years ago from Motorola. 

The Cambium's C000000L033A 56V you can use universally on every 10/100/1000Base-T Ethernet, also with 802.3af PoE, which can also be used to power most new ePMP radios with specified this type powering, usually as alternative to proprietary Cambium's PoE. I am attaching a datasheet Cambium_C000000L033A_56VDC_SS.pdf.

Cambium has also C000000L065A Surge Suppresor for 10/100/1000Base-T Ethernet, to be used with their proprietary PoE <30VDC, see the datasheet SS_GigabitEthernetSurgeSuppressor_03272018.pdf. Beware, this device CANNOT BE USED when powering radio from higher then 30VDC voltages, because internal semiconductor components, able to carry very big currents for microseconds, can be destroyed when even a small current of tens of milliamperes will flow through them for long time. Especially be careful when you use modern switches with PoE because usually PoE is enabled by default. If you connect 30V SS to port of such switch, you will destroy the components in SS, as the switch delivers >50VDC and is able to provide several watts of power, which semiconductors will not withstand. Unfortunately there are no appropriate warnings in CN literature.

These new CN SSs have astonishing design, because after mounting them on the pole or on the wall, the grounding screw terminal is almost impossible to tighten or check. In old 600SS design it was much more better engineered.

Another question is what for CN has developed these SS to be mounted convenietly on poles, but much less conveniently on the wall, as all new CN radios have internal 1 or 2 Joule surge protection circuits inside a radio. The SS is therefore most needed at the building entry down the cable running from the radio, where wall mount is likely the most needed.

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