Altronix MAXIMAL3 16-Output Access Power Controller

Altronix MAXIMAL3 Access Power Controller

Overview

The Altronix MAXIMAL3 is a dedicated access control power distribution and battery charging platform designed for small-to-medium security installations. This controller integrates a 115VAC input power supply with integrated battery charger and 16 independently fused relay outputs rated at 12/24VDC @ 6A per output. The MAXIMAL3 mounts in the BC800 steel enclosure, providing a compact yet highly expandable architecture for access control, door strike power, mag lock circuits, and auxiliary relay-switched loads common in modern access systems.

Key Features

• 16 Fused Relay Outputs: Each relay output is independently fused and rated for 12/24VDC operation at 6A, enabling isolated circuit control for multiple access points or auxiliary loads without cross-interference.
• Dual Voltage Output: Selectable 12VDC or 24VDC output voltage accommodates both legacy and contemporary access control hardware with a single unit.
• Integrated Power Supply & Charger: 115VAC input with built-in battery charging circuit eliminates external charger hardware, reducing panel clutter and installation time.
• Battery Backup Support: Accepts external rechargeable battery to maintain access control function during AC power loss, critical for life safety and security continuity.
• BC800 Enclosure: Compact steel wall-mount or surface-mount form factor fits standard electrical closets and utility spaces without requiring dedicated larger cabinetry.
• Fused Distribution Design: Independent fusing on each relay output protects downstream circuits and prevents cascading failures across the access control system.

Integration & Compatibility

The MAXIMAL3 works with any standard access control panel that supports relay-output triggering of door strikes, mag locks, gate operators, and auxiliary signaling devices. The 16-output architecture allows integration of multiple independent access points or multiple load circuits per access point (e.g., separate strike and sensor outputs). The unit's compact footprint and pre-wired fused relay array reduce on-site integration labor compared to custom relay racks or DIN-rail assemblies.

Package Contents

Altronix MAXIMAL3 power controller, BC800 steel enclosure, internal transformer and charging circuitry, 16 fused relay modules, and mounting hardware.

Jerry Tildsen

I've specified the MAXIMAL3 on several multi-door access retrofit projects where the installer needed compact, reliable power distribution without investing in larger UPS equipment. The independent fused relay design is a practical choice for integrators who want field flexibility—each output can be tailored to different voltage/amperage requirements within the 6A limit, and if one output fails, the others remain operational.

Technical Highlights:

• 16 Isolated Fused Outputs: Each relay is independently fused and switchable, enabling circuit isolation and preventing single-point failures across the access control network.
• Integrated AC-to-DC Conversion & Battery Charging: Built-in charger circuit accepts standard backup battery, eliminating need for separate external charger and reducing panel wiring.
• Flexible Voltage Selection: 12/24VDC selectable output covers both legacy and modern access hardware in a single SKU.

Deployment Considerations:

• Verify backup battery capacity and runtime requirements before installation; MAXIMAL3 provides charging regulation but battery sizing is site-dependent.
• Each relay output is limited to 6A; confirm downstream loads (strike voltage, mag lock amperage, solenoid current draw) do not exceed this rating per circuit.

For small commercial or multitenant installations requiring distributed power over multiple access points, the MAXIMAL3 delivers straightforward relay-switched control with built-in redundancy and minimal footprint. It's a workhorse product that doesn't try to do everything, but does access power distribution well.