Altronix EFLOW104NA8V 8-Output Access Control Power Supply with ACM8

Overview

The Altronix EFLOW104NA8V is a dedicated access control power supply designed for 220VAC input environments — the version to specify when your facility operates on European or international mains voltage rather than North American 120VAC. It pairs the EFLOW104NX power supply board with an integrated ACM8 access control module, delivering 8 individually fused 12VDC or 24VDC outputs from a single enclosure. If you're commissioning a multi-door access system in a facility wired for 220VAC, this is the unit that eliminates the step-down transformer from your design.

The EFLOW104NA8V accepts input from 198VAC to 256VAC at 50/60Hz — a wide enough window to handle voltage sag on loaded circuits without tripping. Each of the 8 outputs is fused at 3.5A individually, so a shorted lock or reader on one door doesn't cascade to take down adjacent doors. That fault isolation is the primary reason to choose a multi-output dedicated supply over a single large supply with branch wiring.

Key Features

• 9.6A total output at 24VDC: Enough headroom to power 8 outputs at near-full fuse rating simultaneously. At 3.5A per fuse, a typical electromagnetic lock draws 0.5A — you're not close to the aggregate ceiling on a standard 8-door deployment. Run the load calculation before assuming the same headroom at 12VDC, which will carry a different aggregate current figure.
• 8 individually fused outputs at 3.5A each: Per-output fusing means a wiring fault or failed device on one circuit doesn't affect the other seven. In multi-door deployments, this is the difference between a single door offline and a whole floor going dark.
• 198–256VAC input range: Covers the full spread of international 220VAC mains, including facilities where line voltage fluctuates under load. No additional conditioning required within this window.
• Auxiliary output at 2.5A: Provides a secondary power tap — useful for powering a door contact monitoring module, a local alarm, or a request-to-exit device without pulling from one of the 8 primary outputs.
• Integrated ACM8 access control module: The ACM8 handles the access control distribution functions in the same enclosure as the power supply. Keeping power conditioning and access distribution in one box reduces field wiring runs and simplifies panel layout in equipment rooms.
• Board-level fusing on every critical rail: The power supply board carries a 6.3A/250V input fuse and a 15A/32V battery fuse. The ACM8 board carries a 10A/250V input fuse and 2.5A/250V output fuse. Multiple protection layers mean a fault on the ACM8 side won't blow the main supply input fuse.
• Rated to 49°C operating temperature: Suitable for equipment rooms and closets that see elevated temperatures in summer — a real-world constraint in non-climate-controlled mechanical spaces. Storage is rated down to -20°C, so units staged in unheated warehouses won't be damaged before installation.
• 123 BTU/Hr heat dissipation at 24VDC: Plan ventilation accordingly if you're mounting multiple units in an enclosed rack or cabinet. In a sealed 19