Altronix EFLOW3NA4V 220V AC to 12/24VDC Surveillance Power Supply
Overview
The Altronix EFLOW3NA4V is a wall- or rack-mountable power supply that converts 220V AC input to regulated 12VDC or 24VDC at up to 3 amps — purpose-built for security deployments where only 220V service is available and access control or surveillance loads need a clean, protected DC rail. This unit pairs the EFLOW3N power supply chassis with the ACM4 power management module, giving installers a compact, protected solution ready for international or industrial electrical environments.
Browse the full Altronix power and access control lineup to see complementary modules and enclosures that pair with this unit.
Key Features
- 220V AC Input: The EFLOW3NA4V accepts 220V AC, which makes it the correct pick for sites outside North America or domestic facilities wired to 220V service — manufacturing floors, data centers, and industrial buildings where 120V branch circuits simply aren't available at every panel.
- Selectable 12VDC or 24VDC Output: Dual output voltage selection means a single SKU can power 12V cameras and access control hardware or 24V locks and readers — reducing the number of distinct power supply models an integrator has to stock and manage across a job.
- 3A Continuous Output: Three amps of continuous DC output is enough to drive multiple low-current devices on a shared rail — for example, several PoE-off access readers, a door controller, and auxiliary relay loads — without the thermal throttling that affects under-specified supplies in fully loaded panels.
- Overcurrent Protection: Built-in overcurrent protection interrupts the output before a shorted downstream device can damage the supply or cascade a fault to other loads on the same distribution panel. The protection resets without requiring supply replacement.
- Short Circuit Protection: Short circuit protection on the output rail prevents a wiring fault during installation or a field device failure from becoming a supply-destroying event — important in retrofit jobs where pre-existing field wiring condition is uncertain.
- Thermal Protection: Onboard thermal protection shuts down the output if internal temperatures exceed safe operating thresholds, then recovers automatically once the unit cools. This matters in sealed enclosures or poorly ventilated equipment rooms where passive convection is limited.
- ACM4 Module Included: The bundled ACM4 access power management module provides per-output current monitoring and power distribution capability — integrators working on access control installations gain the ability to monitor and manage individual device power draws without adding a separate distribution board.
- Wall or Rack Mount: Dual mounting options — wall or rack — give installers flexibility to deploy the unit inside an access control enclosure mounted to a wall, or rail-mount it in a 19-inch equipment rack alongside NVRs and network gear. No secondary hardware purchase needed to adapt mounting style.
Integration & Compatibility
The EFLOW3NA4V is designed for integration into access control and surveillance power distribution systems that require a 220V AC source. The ACM4 module supports multi-output power management, making this unit suitable for panels serving door controllers, maglocks, and card readers simultaneously. Installers running mixed 12V/24V environments can select the appropriate output rail to match the devices in scope — confirm device voltage requirements before finalizing output voltage selection, as the output voltage is configured at installation and should match the specific reader, lock, or controller specifications.
For deployments combining PoE-based IP cameras with access control hardware, pair this supply with a managed PoE switch for the camera infrastructure, reserving the EFLOW3NA4V's DC output for non-PoE access control loads. This division of power infrastructure keeps camera and door-control circuits independent, simplifying fault isolation.
Refer to the power planning guide for calculating load budgets across multi-device access control panels.
Frequently Asked Questions
Q: What is the output voltage of the EFLOW3NA4V?
A: The EFLOW3NA4V provides selectable 12VDC or 24VDC output at up to 3 amps continuous. The output voltage is selected at installation to match the connected devices.
Q: What AC input voltage does the EFLOW3NA4V require?
A: This unit requires 220V AC input. It is not designed for standard North American 120V service without a step-up transformer or dedicated 220V branch circuit.
Q: What protection features are built into the EFLOW3NA4V?
A: The EFLOW3NA4V includes overcurrent protection, short circuit protection, and thermal protection on the output rail. These features protect both the supply and connected devices from common fault conditions.
Q: Can the EFLOW3NA4V be rack-mounted?
A: Yes. The unit supports both wall mounting and rack mounting, giving installers flexibility to deploy it inside a wall-mounted enclosure or in a 19-inch equipment rack.
Q: What is the ACM4 module included with the EFLOW3NA4V?
A: The ACM4 is an access power management module bundled with this unit. It provides per-output power distribution and current monitoring capability, commonly used in multi-door access control panels to manage and monitor individual device loads.
Q: Is the EFLOW3NA4V suitable for international deployments?
A: The 220V AC input makes this unit appropriate for sites outside North America or any facility with 220V electrical service — including manufacturing environments, industrial facilities, and international installations where 120V is not the standard supply voltage.
The EFLOW3NA4V comes up most often on international projects and industrial retrofits where 220V is the available service — the selectable 12V/24VDC output at 3A continuous means you're not hunting for a separate supply SKU when the door controller and the readers run at different voltages. The bundled ACM4 module is the part that actually earns its keep on multi-door panels, giving you per-output monitoring without bolting on a separate distribution board.
Technical Highlights:
- 220V AC Input: Accepts 220V AC directly — no external transformer required for international sites or 220V-wired domestic facilities, which simplifies panel design and reduces BOM complexity.
- Selectable 12/24VDC Output at 3A: A single unit covers both common DC voltages used in access control, with 3A of continuous current sufficient for small multi-device loads without thermal derating under normal enclosure conditions.
- Triple Protection Stack: Overcurrent, short circuit, and thermal protection working together means a wiring fault or device failure during commissioning won't take out the supply — a practical insurance policy on retrofit jobs where field wiring history is unknown.
Deployment Considerations:
- Confirm output voltage selection before terminating field devices — the 12V/24VDC output is set at installation, and mixing voltages on a single rail will damage connected equipment. Document the selected voltage on the panel schedule.
- The 3A rating sets a hard ceiling on aggregate load — tally all connected device current draws (readers, locks, controllers, relays) before commissioning and leave headroom; running the supply at sustained near-maximum output in a sealed enclosure increases thermal shutdown risk even with onboard thermal protection active.
This unit is the right call for a 2–4 door access control panel in an international facility or a 220V-wired industrial building — particularly when the job spec calls for a single supply to handle mixed 12V/24V loads under one managed distribution module without extra hardware.
