Antaira LNP-C501G-SFP-bt-24 5-Port Compact Gigabit Unmanaged PoE++ Switches with 4x PoE++ (240W), 1x SFP, 9-55V DC Input and Extended Temperature Options

Many field cabinets only have a 12 V or 24 V supply, which normally rules out PoE altogether, let alone 90 W ports. The Antaira LNP-C501G-SFP-bt-24 series is designed for those cabinets: a small unmanaged industrial PoE++ switch that accepts 9 to 55 V DC and uses a power booster design to produce the voltage 802.3bt needs, with an SFP slot for the fibre uplink. That removes the need for a separate 48 V supply in the cabinet just to feed the PoE devices, and keeps the wiring of an existing low-voltage cabinet unchanged.

Every LNP-C501G-SFP-bt-24 shares the same design. Four 10/100/1000Base-T(X) RJ45 ports follow IEEE 802.3bt at up to 90 W per port, supporting Mode A, Mode B and 4-pair delivery, and one dual-rate 100/1000 SFP slot takes the fibre link. The PoE budget depends on the input voltage: 60 W from 9 V, 90 W from 12 V, 150 W from 24 V and 240 W from 48 to 55 V DC. DIP switches enable Antaira’s PD Remote Reset Technology (PRRT), set the SFP speed and control PoE by port. Switching is store-and-forward on a 10 Gbps fabric with an 8K MAC table, and a relay warns of a supply failure, with a slow-blow fuse and reverse polarity protection.

The series comes in two temperature grades. The LNP-C501G-SFP-bt-24 is the standard build, rated -10 °C to 65 °C for heated or indoor panels. The LNP-C501G-SFP-bt-24-T is the extended temperature build, rated -40 °C to 75 °C for unheated enclosures exposed to outdoor temperatures. Where a 48 to 55 V DC supply is available, the LNP-C501G-SFP-bt series offers the same ports with a flat 240 W budget.

Antaira names power and utility, water and wastewater, oil, gas and mining, factory automation, security surveillance and ITS as applications for the LNP-C501G-SFP-bt-24 series. PRRT lets a powered device be reset without a site visit, which suits hard-to-reach cameras. Both builds sit in an IP40 metal case for DIN rail or wall mounting, with shock and vibration ratings to IEC 60068-2-27 and IEC 60068-2-6, UL 61010-1 certification and FCC, CE and RoHS marks, and Antaira covers them with its 5-year warranty. Our team can help match the planned PoE load to the cabinet supply voltage before the switch is ordered.