Axis 5505-731 DIN Rail 25W Power Supply

Axis 5505-731 DIN Rail Power Supply

The Axis 5505-731 is a compact, DIN rail-mounted DC power supply purpose-built for distributed Axis IP camera and network video recorder installations. Rated at 25W continuous output with 12V DC @ 2.1A capacity, this unit centralizes power distribution for small to medium surveillance deployments without forcing reliance on PoE injection or mixed power delivery methods. Its industrial form factor integrates directly into standard power distribution cabinets and server racks, eliminating cable clutter and reducing installation labor compared to wall-mounted or desktop supplies.

Key Features

• 25W @ 12V/2.1A output: Sufficient to power multiple compact Axis cameras or a mid-range NVR simultaneously. This capacity avoids undersizing issues common with generic supplies and means you won't need to daisy-chain units in modest installations.
• DIN rail mounting: Standard 35mm rail compatibility ensures the unit occupies minimal cabinet depth while remaining accessible for maintenance. No special brackets required; ships ready for standard industrial enclosures.
• Wide input voltage range: Accepts varying AC mains without external step-down converters, a practical advantage for international sites or facilities with unstable utility power where local voltage fluctuates outside nominal specs.
• Regulated DC output: Held to consistent voltage under load variation — prevents the brownout dips that degrade camera image quality or trigger NVR reboot cycles during peak recording demand.
• Thermal protection and short-circuit safeguards: Built-in fuses and thermal cutoff prevent cascade failures if a camera or downstream component develops a ground fault. Loss of a single supply does not take down the entire cabinet.
• Compact footprint: Minimal depth allows installers to maximize rack space for other critical components — a real consideration when fitting multiple supplies, switches, and NVRs into a single cabinet.

Integration & Compatibility

The 5505-731 is certified for use across the Axis product family, ensuring connector compatibility and voltage tolerance with compact and mid-range Axis cameras. Its 12V output aligns with Axis compact models and select NVR platforms that do not require PoE. When integrated into a centralized power distribution scheme, this unit reduces dependency on PoE switches for bandwidth-limited or geographically distributed camera networks, freeing PoE budget for high-bandwidth analytics cameras that genuinely require in-line power.

The DIN rail design pairs naturally with industrial control relays, terminal blocks, and overcurrent protection devices, allowing integrators to build modular power architectures where multiple supplies can be clustered and managed as a single logical tier. This modularity is especially valuable in multi-site enterprises where standardized cabinet configurations accelerate deployment across branch offices.

Typical Applications

• Centralized 12V distribution for 4–8 compact IP cameras in a single cabinet
• Dedicated power to an NVR that does not support PoE injection
• Backup or supplemental power for branch office surveillance racks
• Multi-supply redundancy in larger installations where a single point of failure must be avoided
• Remote or unstable-power-environment deployments where isolated DC regulation is preferred over AC-dependent alternatives

When to Choose a Different Model

If you are powering only 1–2 PoE-capable cameras, a single PoE switch eliminates the need for this supply entirely. Conversely, if your camera tally exceeds 8 units or includes high-power PTZ cameras (which often demand 60–90W), evaluate higher-wattage industrial supplies or dedicated PDU solutions in the Axis power infrastructure line. For temporary installations or mobile deployments, consider a bench supply with flexible connector options rather than committing to DIN rail mounting.

Frequently Asked Questions

Q: Can I use the Axis 5505-731 to power cameras other than Axis models?

A: The supply outputs standard 12V DC, so any camera or NVR rated for 12V @ 2.1A or lower will function. However, connector compatibility and voltage tolerance are certified only for Axis equipment. Mixed-brand integrations require manual verification of current draw and connector pinouts.

Q: What happens if connected devices exceed 2.1A total draw?

A: The unit is thermal-protected; it will throttle output and may enter shutdown to prevent damage. Monitor aggregate camera/device current during commissioning to ensure total load does not exceed 2.1A under sustained operation.

Q: Does the 5505-731 include redundancy or failover capability?

A: This is a single supply. Redundancy requires deploying parallel units on separate circuits with a diode combiner or manual changeover switch — a configuration beyond the scope of this unit alone.

Q: What input voltage range does the 5505-731 accept?

A: The unit accepts a wide AC mains range, eliminating the need for voltage converters in international or unstable power environments. Refer to the datasheet for exact minimum and maximum specifications.

Q: Can I mount the 5505-731 outside a cabinet or in a harsh environment?

A: The supply is industrial-grade but designed for cabinet or controlled-environment use. For outdoor or corrosive-atmosphere deployments, verify environmental ratings in the datasheet and consider an IP67-rated alternative if direct exposure is unavoidable.

Ted Perry

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

The Axis 5505-731 addresses a genuine cabinet-design gap: centralizing 12V distribution for non-PoE Axis equipment without forcing installers to juggle multiple wall supplies or undersized desktop units. In modular surveillance architectures, this DIN rail form factor is a pragmatic win. The 25W @ 12V/2.1A capacity sits at the sweet spot for small-to-medium compact camera clusters, and thermal protection + short-circuit safeguards keep adjacent equipment safe if a downstream fault occurs.

Technical Highlights:

• 12V/2.1A regulated output: Stable voltage under load variation prevents image dropout and NVR reboot cycles during peak recording demand — a real problem with unregulated or undersized supplies in 24/7 surveillance cabinets.
• DIN rail mounting: Standard 35mm rail compatibility and minimal cabinet depth maximize usable space for additional power supplies, switches, or recorders in retrofit installations without forcing cabinet upsizing.
• Wide input range: Acceptance of varying AC mains eliminates external step-down converters at international sites or facilities with utility voltage fluctuation — a practical cost and complexity reduction in distributed deployments.
• Thermal + short-circuit protection: Fused design prevents cascade failures; loss of one supply does not propagate to other cabinet tiers, a consideration often overlooked in single-supply-per-cabinet designs.

Deployment Considerations:

• Aggregate camera current must not exceed 2.1A under sustained load — verify this during commissioning to avoid thermal throttling or shutdown during peak recording windows.
• Redundancy is not inherent; if 24/7 uptime is critical, plan for dual supplies on separate circuits with a combiner or manual switchover — this unit alone does not provide failover.
• DIN rail mounting assumes cabinet installation; outdoor or unstable-environment use requires explicit environmental verification against the datasheet.

For integrators building modular cabinet architectures across multiple branch offices, the 5505-731 is a reliable tier-1 choice for non-PoE Axis systems. Its compact footprint and industrial certification reduce installation variance and support rapid replication across sites.