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Compact metal industrial switch with five Ethernet ports

Black Box Corporation

Black Box Corporation LBH3050A Industrial 10/100 Mbps 5-Port Network Switch

SKU CH-9WKA-7JH2C MPN LBH3050A

Industrial unmanaged switch with five 10/100 Mbps ports, IP30 metal housing and redundant 12–48 VDC power for -40 to 75 °C operation

  • Switch Typeethernet
  • Operates reliably from -40°C to 75°C for harsh environments
  • IP30 metal housing shields internal components from dust and dirt
  • Redundant 12-48 VDC power input with reverse polarity protection
  • Overload current resettable fuse prevents damage from power surges
  • P-Fail LED alarm instantly alerts administrators to power loss

Industrial edge switch

The Black Box LBH3050A is an unmanaged five-port Ethernet switch built for the network edge where wiring closets end and harsh conditions begin. It operates reliably from -40 to 75°C inside an IP30 metal housing that resists dust and dirt. The switch targets security, building automation, factory control, oil and gas M2M links and defence communications. It requires no configuration to start forwarding traffic.

Replaces office-grade switches

Standard commercial switches lack the temperature range, IP30 protection and redundant 12-48 VDC input with reverse-polarity and overload safeguards that this model provides. The jump is worth it when equipment sits in unheated enclosures, outdoor cabinets or vibration-prone machinery areas where a closet switch would fail. It also fits projects that need alarm notification on power loss without managed-switch complexity.

Five ports with alarm headroom

Five 10/100 Mbps ports handle IP cameras, PLCs, remote sensors and similar edge devices with room for a spare uplink. Each port shows link and collision status via dual LEDs, while a dedicated P-Fail LED triggers an external alarm on power loss. The switch runs out of ports when a site needs more than five drops or requires gigabit throughput for high-bandwidth backhaul.

Highlights

  • Operates reliably from -40°C to 75°C for harsh environments
  • IP30 metal housing shields internal components from dust and dirt
  • Redundant 12-48 VDC power input with reverse polarity protection
  • Overload current resettable fuse prevents damage from power surges
  • P-Fail LED alarm instantly alerts administrators to power loss

Specifications

BrandBLACK BOX NETWORK SERVICES
Switch Typeethernet
Shipping weight0.56 kg
Package size229 × 165 × 64 mm

Questions about this item

What mounting hardware does the IP30 metal housing of the LBH3050A require?

The switch uses an IP30-rated metal housing designed for industrial environments; mounting hardware is not detailed in the product specifications.

How do I wire the 12-48 VDC redundant power inputs without triggering the reverse-polarity protection?

Connect each DC source to the redundant power terminals; the built-in Power Polarity Reverse Protect tolerates reversed wiring, and the overload current resettable fuse guards against excess current.

When should I replace the overload current resettable fuse on the LBH3050A?

The resettable fuse automatically recovers after an overload event; it does not require scheduled replacement unless it fails to reset following a fault.

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