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Compact hardened industrial switch, five copper ports, metal DIN-rail enclosure

Black Box Corporation

Black Box Corporation LBH120A-H 5-port 10/100 network switch

SKU CH-VBKN-RGBN9 MPN LBH120A-H

Five-port hardened industrial switch with 10/100 Mbps copper ports, DIN-rail mounting, and TAA compliance

  • Network Management TypeEthernet Switch
  • Primary Ports5 x Fast Ethernet Network
  • Primary Port Speed10/100Base-TX
  • 5 hardened copper ports for industrial networks
  • Layer 2 switching handles 10/100 Mbps traffic
  • Compact 4.3" x 1" x 2.8" fits tight enclosures
  • DIN rail kit included for quick cabinet mounting
  • TAA compliant for government procurement

Hardened five-port Fast Ethernet switch

The Black Box Corporation LBH120A-H is a compact industrial switch with five 10/100Base-TX copper ports. It operates at Layer 2 and draws power from an external supply. The metal enclosure measures 4.3 by 1 by 2.8 inches and weighs roughly 8 oz. A DIN-rail mounting kit is included for cabinet installation.

Sustained load behaviour

The switch forwards traffic at wire speed across all five ports without blocking. Fast Ethernet links run at 10 or 100 Mbps with full-duplex flow control. No management processor or buffering beyond the standard MAC table is present, so latency stays deterministic under continuous load. The fanless design relies on the aluminium case for passive heat dissipation.

Installation and common issues

Mount the unit on a standard DIN rail using the supplied clips; no tools are required beyond a screwdriver for the rail itself. Connect the external power supply before linking Ethernet cables. The most frequent problem is forgetting the separate power adapter, which leaves the switch unpowered. Verify the supply voltage matches the unit label before applying power.

Highlights

  • 5 hardened copper ports for industrial networks
  • Layer 2 switching handles 10/100 Mbps traffic
  • Compact 4.3" x 1" x 2.8" fits tight enclosures
  • DIN rail kit included for quick cabinet mounting
  • TAA compliant for government procurement

Specifications

BrandBlack Box Corporation
ModelLBH120A-H
Network Management TypeEthernet Switch
Primary Ports5 x Fast Ethernet Network
Primary Port Speed10/100Base-TX
Shipping weight0.34 kg
Package size197 × 178 × 83 mm

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