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DC powered SRX550 handled enterprise traffic reliably.
SRX550-645DP-M
SRX550. DC PSU. 4G RAM. 8G CF
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SRX550-645DP-M
SRX550. DC PSU. 4G RAM. 8G CF
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SRX550-645DP-M is a rack-mounted hardware firewall appliance delivering 6.45 Gbps of firewall throughput. It features a balanced port configuration with eight LAN ports, two WAN ports, and selectable SFP interfaces, while operating on an AC power supply with redundant backup to ensure continuous operation. The device natively supports a suite of security services including IPS, antivirus, web filtering, application control, and VPN functions.
SRX550-645DP-M is engineered for enterprise, branch office, and SMB deployments where streamlined management via CLI, GUI, SNMP, and centralized reporting is critical. Its scalable and high-availability design—with active-passive clustering support—ensures robust secure connectivity and advanced threat protection across diverse network environments.
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In a multinational retail chain, IT deploys the SRX550-645DP-M-SRX550 DC PSU appliance with 4 GB RAM and 8 GB CF as a hardened branch firewall. The DC power supply ensures uninterrupted operation during grid outages, while Compact Flash storage provides rapid boot and configuration recovery. Benefit: Delivers 99.99% uptime, cuts security incidents by 50%, and accelerates PoS transactions by 25%.
A global enterprise centralizes interoffice traffic on an SRX550-645DP-M-SRX550. DC PSU. 4 G RAM. 8 G CF to terminate hundreds of encrypted IPsec tunnels. Ample RAM supports large routing tables and simultaneous SSL VPN sessions, while the DC power module guarantees resilience in carrier-neutral data centers. Outcome: Scales to 2 Gbps of encrypted throughput, reduces latency by 30%, and simplifies branch-to-cloud integration.
A regional utility operator secures SCADA networks with the SRX550-645DP-M-SRX550 DC PSU appliance. The integrated 4 GB RAM enables deep packet inspection of Modbus and DNP3 protocols, while the 8 GB CF logs audit trails locally for regulatory compliance. DC power compatibility allows direct integration with substation batteries. Result: Enforces microsegmentation, prevents unauthorized control-plane access, and meets NERC CIP requirements with zero downtime.
To get the detailed certification, please go to the Compliance Center.
 SRX550-645DP-M |  SRX110H2-VA |  SRX4600-AC-TAA |  SRX5400X-CHAS |  SRX345-SYS-JE-DC | |
|---|---|---|---|---|---|
| Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
| Architecture | Rack-mount | Virtual | Rack-mount | Chassis | Rack-mount |
| Deployment Type | Branch Office / Enterprise / SMB | Enterprise / Branch Office / Cloud | Enterprise / Data Center | Enterprise / Data Center | Enterprise / Data Center |
| Use Case | VPN / Secure Access / Advanced Threat Protection | VPN / Secure Access / UTM | VPN / Secure Access / Segmentation / UTM | VPN / Secure Access / UTM | VPN / Secure Access / Segmentation / UTM |
| Firewall Layer Supported | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 |
| Power Source | AC Power Supply | N/A | AC Power Supply | AC Power Supply | AC Power Supply |
| Redundant Power Supply Supported | Yes | No | Yes | Yes | Yes |
| Firewall Throughput | 6.45 Gbps | 1 Gbps | 40 Gbps | 400 Gbps | 4 Gbps |
| Threat Protection Throughput | 4.0 Gbps | 600 Mbps | 9 Gbps | 200 Gbps | 3 Gbps |
| IPS Throughput | 3.2 Gbps | 400 Mbps | 4 Gbps | 150 Gbps | 2 Gbps |
| VPN Throughput | 5.5 Gbps | 800 Mbps | 15 Gbps | 100 Gbps | 1.5 Gbps |
| Supported Applications | 50 | 150 | 300 | 700+ | 500 |
| Centralized Configuration & Reporting | Yes | Yes | Juniper Networks Junos Space | Juniper Networks Security Director | Yes |
| Feature | Application Control, Logging, Reporting | Virtualization, Clustering, High Availability | Next-Generation Firewall with integrated IPS, antivirus, and web filtering | Scalability, High Availability, Clustering | Next-Generation Firewall |
| Concurrent Sessions | 250000 | 100,000 | 700000 | 5 Million | 250,000 |
| Maximum Concurrent Sessions | 250000 | 150,000 | 1500000 | 10 Million | 500,000 |
| Users/Nodes | Unlimited | Unlimited | Unlimited | Unlimited | Unlimited |
| Integrated I/O | 8 | N/A | N/A | N/A | 8 |
| New Sessions Per Second | 60000 | 5,000 | 25000 | 150,000 | 30,000 |
| Supported VPN Types | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN / GRE | IPSec / SSL VPN |
| Routing Protocols Supported | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / Static Routing |
| Security Services | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN |
| High Availability | Active-Passive | Active-Passive | Active-Passive | Active-Passive | Active-Passive |
| Interfaces | RJ-45 / SFP | SFP | RJ-45 / SFP / SFP+ | RJ-45 / SFP / SFP+ | RJ-45 / SFP |
| WAN Ports | 2 WAN | N/A | 4 WAN | 2 WAN | 2 WAN |
| LAN Ports | 8 LAN Ports | N/A | 8 LAN Ports | 4 LAN Ports | 8 LAN Ports |
| Switch Ports | Yes | No | Yes | Yes | Yes |
| POE Ports | No | No | No | No | No |
| Management Options | CLI / GUI / SNMP / Centralized | Cloud / CLI / GUI / Centralized / REST API / SNMP | CLI / GUI / SNMP / REST API / Centralized | Cloud / CLI / GUI / Centralized / REST API / SNMP | CLI / GUI / SNMP |
| Logging & Monitoring | Built-in / External / Syslog / Cloud Logging | Built-in / Syslog | Built-in / Syslog / Cloud Logging | Built-in / External / Syslog / Cloud Logging | Built-in / Syslog |
| Firewall Policies Supported | 1024 | 500 | N/A | 5000 | 200 |
| Users Supported | 250000 | Unlimited | Unlimited | Unlimited | Unlimited |
| Memory | 8 GB | 8 GB | 16 GB | 32 GB | 8 GB |
| Flash Storage | 128 GB | 64 GB | 128 GB | 128 GB | 128 GB |
| Expansion Slots | SFP | N/A | SFP | NP Module | SFP |
| Form Factor | 1 RU | Virtual Appliance | Rack-mount | Chassis | 1 RU |
| Rack Units | 1 RU | N/A | 2 RU | N/A | 1 RU |
| Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
| Product Name | SRX550-645DP-M | SRX110H2-VA | SRX4600-AC-TAA | SRX5400X-CHAS | SRX345-SYS-JE-DC |
| Height | 1.75 inches | N/A | 3.5 inches | N/A | 1.75 inches |
| Width | 17.5 inches | N/A | 17.3 inches | N/A | 17.5 inches |
| Depth | 14.5 inches | N/A | 28.7 inches | N/A | 15 inches |
| Weight | 13 lbs | N/A | 30 lbs | N/A | 15 lbs |
DC powered SRX550 handled enterprise traffic reliably.
Plenty of expansion options.
Stable platform.
Good long term reliability.
Met expectations.
The Juniper SRX550-645DP-M delivers up to 3 Gbps of firewall throughput, ensuring high-performance network security for mid-sized enterprises.
The SRX550-645DP-M ships with 4 GB of DDR3 RAM and supports up to 16 GB for advanced security and VPN workloads.
The device includes an 8 GB Compact Flash module for boot, log storage, and persistent configuration.
The SRX550-645DP-M is equipped with a DC power supply module, supporting standard −48 V DC inputs for telecom environments.