Antaira LNP-0702C-SFP-24 7-Port Fast Ethernet Unmanaged Industrial PoE Switches with 4x PoE+ (120W), 2x SFP, 12-55V DC Input and Extended Temperature Options

A PoE switch normally needs a 48 V supply to power its devices, and many industrial cabinets carry only 12 or 24 V DC. The Antaira LNP-0702C-SFP-24 series removes that step: industrial unmanaged PoE+ switches that run from 12 to 55 V DC and still deliver IEEE 802.3at power, with four Fast Ethernet PoE+ ports, one further copper port and two SFP slots for a fibre run back to the network core.

Every LNP-0702C-SFP-24 switch has four 10/100Base-TX RJ45 ports with IEEE 802.3af/at PoE+ at up to 30 W each, one further 10/100Base-TX port without PoE, plus two 100/1000 dual-rate SFP slots, so the fibre type and reach follow the transceiver fitted. Switching is unmanaged and store-and-forward on a 5 Gbps fabric with an 8K MAC address table, 9.6 KB jumbo frames and a 4 Mbit memory buffer, so the switches pass traffic and power devices with no set-up. Power arrives on 12 to 55 V DC redundant inputs on a removable terminal block. The PoE budget depends on input voltage: 60 W at 12 V DC rising to 120 W from 36 to 55 V DC, so a 48 V supply covers all four ports at 30 W. One relay output gives a power failure warning, and reverse polarity protection and overload current protection with a slow-blow fuse guard the input side.

The series comes in two temperature builds. The LNP-0702C-SFP-24 is the standard build, rated -10 °C to 70 °C, for heated or indoor cabinets. The LNP-0702C-SFP-24-T is the extended temperature build, rated -40 °C to 75 °C, for unheated outdoor enclosures and other sites that see hard frosts. Both share the same ports, power input and PoE budget. The PoE budget depends on input voltage in both builds, so a 36 to 55 V supply is the one to choose for four devices at 30 W.

Antaira designs the series for rugged, harsh industrial environments. The LNP-0702C-SFP-24 series is housed in an IP30 metal case for DIN-rail mounting, with wall-mount hardware included, and is rated for shock to IEC 60068-2-27 and vibration to IEC 60068-2-6. Antaira lists the series as UL Class 1 Division 2 and UL 61010-1 certified, with CE and FCC marks and RoHS compliance, and both builds carry Antaira’s 5-year warranty. In practice, the choice between the two builds comes down to the coldest temperature the installation will see.