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DC power support integrates well with our data center standards.
EX4300-48T-DC-TAA
EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS
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EX4300-48T-DC-TAA
EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS
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EX4300-48T-DC-TAA is a high-performance Ethernet switch built on a resilient architecture that supports both Layer 2 and Layer 3 capabilities. Designed with a fixed, rack-mount form factor, it delivers 48 copper-based 10/100/1000 ports along with 4 dedicated SFP uplink ports; its stacking feature seamlessly expands operational scalability for growing networks.
Engineered for demanding enterprise and data center applications, the EX4300-48T-DC-TAA combines reliable connectivity with flexible power options and robust processing performance. Its compact design, energy-efficient operation, and Virtual Chassis capability make it ideal for campus networks, branch offices, and high-density environments where streamlined management and scalable performance are essential.
EX4300-48T-DC-TAA price is is available on request. Get immediate quote.
Request bulk order quote for EX4300-48T-DC-TAA for additional pricing. Browse the full Juniper Ex4300 Series Ethernet Switches series or explore all Juniper products.
In U.S. federal branch offices requiring Trade Agreements Act compliance, the EX4300-48T-DC-TAA delivers 48× 10/100/1000Base-T ports and a 450 W DC power supply for seamless failover to building DC bus. Outcome: fully TAA-compliant infrastructure with centralized Junos-driven management, zero single‐point‐of-failure, and guaranteed uptime under power fluctuations.
At remote cell-tower sites, the EX4300-48T-DC-TAA aggregates DSL/Fiber backhaul and CPE connections over 48 copper ports while drawing directly from battery-room DC. Outcome: compact, carrier-grade switching that cuts rack space, eliminates AC-UPS redundancy, and sustains voice/data services through extended power outages.
In power generation and distribution substations, the EX4300-48T-DC-TAA forms a hardened Layer-2 backbone for SCADA devices over 48 copper links, with 450 W DC input matching plant DC bus architecture. Outcome: deterministic low-latency transport, simplified compliance with industry safety standards, and uninterrupted supervisory control even during grid disturbances.
To get the detailed certification, please go to the Compliance Center.
 EX4300-48T-DC-TAA |  EX4300-24T-TAA |  EX4300-48T-AFI-TAA |  EX4300-48T-DC-AFI |  EX4300-48T-DC | |
|---|---|---|---|---|---|
| Depth | 11.3 inches | 10.7 inches | 11 inches | 11 inches | 11.5 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.73 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | IP Lite | IP Services | IP Lite | N/A | LAN Base |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | EX4300-48T-DC-TAA | EX4300-24T-TAA | EX4300-48T-AFI-TAA | EX4300-48T-DC-AFI | EX4300-48T-DC |
| Media Type Supported | Twisted Pair | Twisted Pair / Fiber | Twisted Pair | Twisted Pair | Twisted Pair / Fiber |
| Memory | 512 MB | 512 MB | 4 GB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 24 Ports | 48 Ports | 48 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48 x 10/100/1000 copper ports, 4 SFP uplink ports | 24 x 10/100/1000 Ethernet ports and 4 x 1/10G SFP+ uplink ports | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 1G SFP uplink ports | 48 copper 10/100/1000 ports and 4 SFP uplink ports | N/A |
| Power Consumption | 250W | 46 W | 370 W | 39 W | 30 W |
| Power Source | N/A | AC Power Supply | Redundant Power Supply | N/A | DC Power Supply |
| Product Name | Juniper Networks EX4300-48T-DC-TAA Ethernet Switch | EX4300-24T-TAA Ethernet Switch | Juniper Networks EX4300-48T-AFI-TAA Ethernet Switch | EX4300-48T-DC-AFI Ethernet Switch | EX4300-48T-DC Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | Yes | No | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 176 Gbps | 128 Gbps | 1280 Gbps | 176 Gbps | 176 Gbps |
| Switching Capacity with Stacking | N/A | N/A | N/A | 352 Gbps | 352 Gbps |
| Uplink Configuration | 1G / 10G | 1G / 10G | 1G | 1G | 1G / 10G |
| Weight | 13 lbs | 7.5 lbs | 12 lbs | 16 lbs | 13 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
DC power support integrates well with our data center standards.
Reliable switching with consistent throughput.
Runs cleanly without power related issues.
Good option for regulated DC environments.
Stable and dependable in production.
The EX4300-48T-DC-TAA is a Juniper Networks 48-port 10/100/1000BaseT Ethernet switch with a 450W DC power supply and Trade Agreements Act compliance.
Yes, the EX4300-48T-DC-TAA meets Trade Agreements Act (TAA) requirements for government and enterprise procurement.
The EX4300-48T-DC-TAA provides 48 fixed 10/100/1000BaseT RJ-45 ports for high-density connectivity.
It includes a front-to-back 450W DC power supply designed for −40 to –72VDC input environments.