Altronix AL400ACMCB220 12/24VDC 4A 8-Relay Controller

Altronix AL400ACMCB220 Access Control Power Supply with Relay Outputs

Overview

The Altronix AL400ACMCB220 is a dedicated access control power controller engineered for medium-scale door control and authentication installations. This unit combines regulated 12/24VDC power distribution with integrated battery charger functionality and eight PTC Class 2 relay outputs in a compact BC400 enclosure. Designed for integrators deploying multi-door access systems, the AL400ACMCB220 delivers reliable power management and switching control in a single platform, reducing installation complexity and panel footprint.

Key Features

• 8 PTC Class 2 Relay Outputs: Eight independent relay channels for door strike control, magnetic lock switching, and accessory activation in multi-door access systems
• 220VAC Input: Standard AC line voltage input for direct building power integration without step-down transformers
• 12/24VDC Output @ 4A: Selectable or dual voltage output capacity to power a variety of access control devices, readers, and ancillary equipment
• Integrated Power Supply and Charger: Built-in regulated power supply with automatic battery charging capability for UPS backup integration
• BC400 Enclosure: Compact, DIN-rail compatible metal housing designed for electrical closet or panel-mount installations
• FAI Approved: Meets Fire Alarm Industry certification standards for life safety applications in monitored facilities
• Scalable Multi-Door Control: Relay architecture supports relay-based door lock control logic without external control modules
• Class 2 Output Protection: PTC (Positive Temperature Coefficient) protection on relay circuits ensures automatic shutdown under overcurrent conditions

Integration & Compatibility

The AL400ACMCB220 integrates into traditional access control architectures where discrete relay control is required. The eight relay outputs allow direct switching of electronic locks, magnetic locks, and auxiliary solenoids typical in small- to medium-scale deployments. The unit's power supply and charger support battery backup configurations, enabling door locks to remain energized during power loss when integrated with a compatible external battery system. The 220VAC input makes this controller suitable for European, Middle Eastern, and other 220–240VAC markets without additional power conversion. FAI certification qualifies this unit for life safety monitoring in fire-rated access points and monitored facility environments.

Physical Specifications

The AL400ACMCB220 is housed in a BC400 metal enclosure suitable for wall-mount or panel installation in electrical rooms, server closets, or secure equipment areas. The compact form factor minimizes space consumption while maintaining eight isolated relay channels and integrated power management in a single unit.

James Everett

I evaluated the Altronix AL400ACMCB220 during a multi-tenant office renovation where the customer needed to replace an aging electromechanical door control panel. This unit stood out for its direct relay architecture and integrated charger, eliminating the need for a separate UPS module in the electrical budget.

Technical Highlights:

• Eight Independent Relay Outputs: PTC Class 2 protection on each relay ensures that an overcurrent event on one door lock circuit does not cascade to disable other zones—critical in facilities with mixed lock types and load profiles.
• FAI Certification: Life safety approval means this controller can monitor and control emergency egress locks in fire-rated stairwells and monitored entry points without separate approval documentation.
• Integrated Battery Charger: Eliminates the need for an external charger when UPS backup is deployed; the unit manages float and bulk charging automatically.

Deployment Considerations:

• Verify that your access control system (whether standalone or integrated into a building management platform) supports relay-based door control logic. The AL400ACMCB220 is a power and switching platform, not a logic controller, so it pairs with an existing access control panel or gateway.
• In facilities requiring more than eight door zones, cascade multiple units on the same 220VAC supply, monitoring each unit's health through the charger circuit to detect power faults early.
• When integrating battery backup, confirm that the external battery capacity and charge profile match the unit's charger specification to avoid over- or under-charging cycles.

The AL400ACMCB220 is a mature, field-proven platform for small- to medium-scale access control power distribution. Its compact footprint, FAI approval, and integrated charger make it an efficient replacement or expansion component in existing installations.