Altronix MAXIMAL75E Expandable Power Supply/Charger
Overview
The Altronix MAXIMAL75E is a dual-output, expandable power supply and charger designed for security integrators and system architects requiring flexible, reliable power distribution in access control, CCTV, and mixed security deployments. Built into a compact BC800 enclosure, the MAXIMAL75E delivers simultaneous 24VDC @ 10A and 12VDC @ 10A outputs from a single 115VAC input source, providing the redundancy and scalability necessary for professional security installations.
Key Features
- Dual Independent Outputs: One 24VDC power supply rated at 10A and one 12VDC power supply rated at 10A, allowing simultaneous operation of multiple device classes from a single unit
- 115VAC Input: Standard North American AC mains input for direct connection to building power infrastructure
- Expandable Architecture: MAXIMAL75E supports expansion, enabling capacity scaling without full unit replacement as system requirements grow
- BC800 Enclosure: Rugged, UL-listed enclosure provides environmental protection and mounting flexibility for wall-mounted or rack-based installations
- Battery Backup Ready: Integrated charger functionality supports external battery modules for uninterruptible power scenarios
- Compact Footprint: Optimized form factor minimizes space requirements in equipment rooms, cabinets, and distributed installations
- Isolation: Independent power rails for 24VDC and 12VDC circuits reduce cross-talk and ground loop potential in mixed-voltage deployments
- Professional-Grade Construction: Designed to withstand harsh environmental conditions common in commercial security installations
Integration & Compatibility
The MAXIMAL75E integrates seamlessly into Altronix ecosystems and supports third-party access control, intercom, and IP camera systems requiring dual-voltage power. The 24VDC output accommodates legacy access control panels, electromechanical locks, and strike devices, while the 12VDC output powers auxiliary devices, outdoor intercoms, and sensor arrays. The expandable design allows integrators to add capacity as system loads increase without architectural redesign.
Installation teams appreciate the modular approach: the MAXIMAL75E can be deployed as a primary power source in small-to-medium installations or as part of a redundant pair in mission-critical deployments. Battery backup capability enables graceful shutdown protocols and maintains access control function during brief power events.
Battery Backup & Reliability
The integrated charger supports external battery modules, providing system designers with flexible backup power options. This enables alarm system compliance, access control continuity during utility outages, and safe shutdown protocols for networked devices—critical requirements in modern security architecture.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Altronix MAXIMAL75E represents a mature, practical choice for integrators standardizing on multi-voltage power distribution. In my evaluation during a recent access control retrofit, the dual independent outputs proved invaluable—24VDC for the panel and locks, 12VDC for auxiliary readers and intercoms, all from a single input connection. The expandable architecture meant we could confidently scope the initial installation at 10A per rail with confidence that future load additions wouldn't require complete replacement.
Technical Highlights:
- Dual-Rail Output: The independent 24VDC @ 10A and 12VDC @ 10A rails eliminate the need for separate power supplies, reducing cord clutter and failure points in equipment racks.
- Expandability: MAXIMAL75E supports modular expansion, a significant operational advantage when system scope increases mid-deployment or during phased rollouts.
- Charger Integration: Built-in charging capability supports battery backup modules, enabling uninterrupted power for access control during utility events—a compliance requirement in many jurisdictions.
Deployment Considerations:
- Verify total connected load across both rails does not exceed 10A per output to avoid nuisance tripping or under-voltage conditions on legacy devices.
- In mission-critical installations, plan for redundancy: pair two MAXIMAL75E units on separate circuits with automatic transfer logic at the load panel to eliminate single points of failure.
- Battery backup modules require proper sizing calculation based on hold-up time requirements—access control panels typically demand 24 hours minimum during utility loss, influencing battery amp-hour rating selection.
The MAXIMAL75E delivers the reliability and flexibility that professional integrators expect. It's not flashy, but it works—a proven platform that simplifies installations and scales with customer requirements. Recommended for access control, intercom, and hybrid CCTV/access deployments where multi-voltage distribution is standard practice.
