Altronix MAXIMAL77F Dual 24VDC 19.4A Access Power Controller

Altronix MAXIMAL77F Access Control Power Supply

Overview

The Altronix MAXIMAL77F is a professional-grade access control power distribution platform engineered for integrated security deployments. This controller combines dual 24VDC regulated power supplies with 16 independently fused relay outputs in a single BC800 enclosure, providing centralized power management and switching control for door locks, mag-locks, credentials readers, and auxiliary access devices. Input operates at 115VAC, delivering 9.7 amperes per supply for a total of 19.4A output capacity across dual channels. The MAXIMAL77F includes Altronix Fail Access Interlock (FAI) functionality and is LinQ2-ready for network integration and remote monitoring capabilities.

Key Features

• Dual 24VDC Power Supplies: Two independent regulated supplies rated at 9.7A each, enabling redundant power distribution or higher aggregate current capacity for complex access installations
• 16 Fused Relay Outputs: Individual relay switching for door strikes, mag-locks, request-to-exit devices, and access control auxiliary functions with isolated fusing for circuit protection
• 115VAC Input Voltage: Single-phase AC mains compatibility with standard facility power infrastructure
• FAI (Fail Access Interlock): Integrated fail-safe access control logic for coordinated door unlock sequencing and controlled access during power loss events
• LinQ2 Ready: Embedded networking capability for remote status monitoring, power diagnostics, and centralized management via compatible access control platforms
• BC800 Enclosure: Professional DIN-rail compatible form factor for rack or wall mounting in network closets, electrical rooms, or access control distribution hubs
• Regulated Output: Stabilized 24VDC rails ensure consistent voltage delivery to sensitive access control devices under variable load conditions
• Individual Circuit Isolation: Each relay output is independently fused, preventing cascading failures when individual access devices fault or draw excess current

Integration & Compatibility

The MAXIMAL77F integrates seamlessly into multi-door and multi-reader access control systems requiring centralized power distribution. LinQ2 connectivity enables real-time power supply status monitoring, battery backup diagnostics (where battery packs are added externally), and fault alerting through compatible access control management software. The dual 24VDC supplies support both balanced distribution across multiple readers and locks, or dedicated power rails for separate access control zones. FAI logic coordinates fail-safe unlock sequences during emergencies or controlled power-down scenarios, meeting life safety requirements for emergency egress.

Marty Allison

The Altronix MAXIMAL77F has proven effective in mid-to-large deployments where access control power demands exceed single-supply capabilities. The dual 24VDC architecture at 9.7A per channel gives you genuine load flexibility without undersizing. I've deployed this controller in retail and corporate campuses where we needed isolated power rails for separate badge reader zones and mag-lock banks.

Technical Highlights:

• Dual Supply Architecture: Two independent 9.7A outputs eliminate single points of failure and allow balanced load distribution across access control devices
• 16 Relay Isolation: Every output fuse is independent, so a shorted mag-lock doesn't take down your entire access system
• LinQ2 Network Ready: Remote monitoring and diagnostics remove guesswork from troubleshooting power faults in distributed access deployments

Deployment Considerations:

• Plan for external battery backup integration at installation—the MAXIMAL77F controller itself doesn't include onboard batteries, but supports battery chargers for fail-safe unlock during outages
• Use the 16 relay outputs strategically: reserve some for future device expansion rather than fully populating at day one
• Verify your access control platform supports LinQ2 before specifying this model for networked monitoring; older systems may require serial integration instead

The MAXIMAL77F is a straightforward, reliable platform for access control power distribution in professional installations. The dual supplies and fused relay architecture handle the complexity of real-world deployments without unnecessary bells. Pair it with matched battery backup and UPS for full emergency egress compliance.