Altronix MAXIMAL33F Dual 12/24VDC Power Controller 16 Relay

Altronix MAXIMAL33F Access Power Controller

Overview

The Altronix MAXIMAL33F is a compact access control power solution designed to support multi-door security systems and building automation installations. This unit combines redundant power supply and charger functionality in a single enclosure, delivering stable 12/24VDC output with integrated relay switching for synchronized door access and alarm control. The MAXIMAL33F operates from standard 115VAC input and mounts in the industry-standard BC800 enclosure, making it suitable for panel integration in security rooms, electrical closets, or distributed access points.

Key Features

• Dual Power Supply/Charger Outputs: Two independent 12/24VDC channels, each rated at 6A continuous current, enabling simultaneous powering of multiple access devices and battery backup circuits
• 16 Fused Relay Outputs: Individual fused relay outputs for controlled switching of door strikes, magnetic locks, exit buttons, and ancillary alarm devices without external relay modules
• 115VAC Input: Standard North American mains voltage compatibility for straightforward facility integration
• FAI Certification: Fire Alarm Interface compatibility ensures code compliance in life-safety applications requiring integrated access and alarm control
• LinQ2 Ready: Pre-configured for Altronix LinQ2 networked power management and remote monitoring, supporting centralized system oversight across multiple access control nodes
• BC800 Enclosure: Rugged steel housing optimized for secure equipment mounting and thermal management
• Battery Backup Capability: Integrated charger topology supports auxiliary battery modules for extended hold-up power during mains interruption

Integration & Compatibility

The MAXIMAL33F serves as a platform controller for access systems requiring distributed relay switching without complex field wiring. Its dual 6A supply rails accommodate redundant loads—one circuit for access control electronics and a second for battery backup charging. The 16 fused relay outputs eliminate the need for separate relay cards or external switching modules, reducing installation complexity and improving mean time to repair. FAI certification enables direct integration into fire alarm systems requiring access control coordination during emergency evacuation sequences. LinQ2 readiness allows real-time monitoring of power supply status, relay state, and battery condition through networked management interfaces, supporting both local and remote diagnostics.

Electrical Specifications

Input voltage is 115VAC, 50/60 Hz. Output voltage is selectable 12VDC or 24VDC. Each of the two output channels is rated for 6A continuous current. The unit incorporates individual fuses protecting each of the 16 relay outputs, with fuse ratings sized for standard 12/24VDC switching loads. Battery backup charging current and float voltage are factory-configured to support lead-acid and lithium auxiliary batteries.

Jerry Tildsen

I've deployed the MAXIMAL33F in multi-tenant office buildings and healthcare facilities where distributed access control and battery backup are non-negotiable. This unit eliminates the need to source separate power supplies, chargers, and relay modules—everything is integrated into one BC800-mounted controller. The dual 6A rails give you real flexibility: run your access panel off one channel while dedicating the second to battery charging and keeping those outputs isolated.

Technical Highlights:

• Integrated Relay Bank: 16 fused relay outputs eliminate external relay expansion modules and reduce panel wiring complexity
• Dual Independent Supplies: Two 6A channels allow segregated power distribution for access electronics and battery backup without load interaction
• FAI Compliance: Fire Alarm Interface certification enables seamless coordination with life-safety systems during emergency egress scenarios
• LinQ2 Network Ready: Remote power and relay monitoring without proprietary gateway hardware

Deployment Considerations:

• Size the auxiliary battery bank based on your hold-up time requirement and the total current draw of access readers and locking devices during mains failure
• Pre-stage the output voltage (12VDC vs. 24VDC) during factory configuration to match your installed access hardware
• Verify fuse ratings against your relay load profiles; standard 12/24VDC solenoid and strike currents typically fall well within individual output protection
• Use LinQ2 monitoring to establish baseline power consumption and detect degradation in charger output or battery condition before field failures occur

The MAXIMAL33F is a solid foundation controller for mid-scale access deployments where integration depth and field reliability matter more than exotic feature sets. If your system calls for redundant supplies, integrated relay switching, and battery-backed hold-up in a single enclosure, this unit earns its footprint.