Altronix AL1024NK8D Dual Output 24/12VDC Power Supply

Altronix AL1024NK8D Dual Output Power Supply/Charger

Overview

The Altronix AL1024NK8D is a dual-input power supply and charger sub-assembly kit designed for distributed 12VDC and 24VDC power delivery in security and access control installations. This UL-listed kit converts 115VAC 60Hz input into eight independently controlled PTC-protected outputs with a combined capacity of 10A at 24VDC (240W total power). The AL1024NK8D features instantaneous battery failover, integrated sealed lead acid/gel battery charging, and comprehensive supervision capabilities, making it suitable for mission-critical applications requiring redundant power distribution and automatic backup activation.

Key Features

• Dual Input Design: Two factory-installed independent low-voltage 12VDC or 24VDC Altronix power supplies allow power steering between primary and backup sources
• Eight PTC-Protected Outputs: Each output independently controlled with short-circuit and overload protection
• Flexible Voltage Output: Delivers 12VDC up to 6A or 24VDC up to 10A continuous maximum (240W total power)
• Integrated Battery Charger: Built-in charging circuitry supports sealed lead acid or gel-type batteries up to 12AH at 12VDC; supports 40AH and 65AH batteries when housed in separate enclosures
• Instantaneous AC Fail Failover: Upon AC loss, power automatically transfers to stand-by batteries without delay or output interruption
• Comprehensive Supervision: Bi-colored LEDs provide visual verification of voltage presence on each output; AC Fail, Battery Fail, and Battery Presence monitoring indicators
• Filtered and Regulated Outputs: Electronically regulated voltage with surge suppression and overvoltage protection on all eight outputs
• Space-Efficient Design: Stackable sub-assemblies save valuable rack and cabinet space
• UL Listings: Kit contents are UL-listed sub-assemblies; meets UL294 (Access Control) and UL603 (Burglar Alarm) agency standards
• CE Compliance: European Conformity certification for international deployments
• Lifetime Warranty: Manufacturer-backed lifetime warranty on the AL1024NK8D kit

Integration & Compatibility

The AL1024NK8D kit consists of the AL1024ULx power supply with integrated VR6 voltage regulator and PDS8CB distribution module—both UL-listed sub-assemblies designed for integration into BC400 enclosures. The dual-input architecture enables integration with redundant AC sources or primary AC with battery backup, offering flexibility in security system architectures. Eight independently controlled outputs with individual PTC protection allow selective circuit isolation without affecting other loads. The 24VDC input from the AL1024ULx power supply feeds the VR6 regulator, which maintains stable voltage across all eight outputs even under varying load conditions.

Package Contents

The AL1024NK8D ordering kit includes AL1024ULx power supply with VR6 voltage regulator and PDS8CB distribution module—both delivered as UL-listed sub-assemblies. Batteries are sold separately. The kit is designed for installation within BC400 enclosures or compatible cabinet configurations. Input voltage is 115VAC 60Hz with 5A/250V fusing; output voltage is selectable as 12VDC or 24VDC based on installation requirements.

Eden Phillips

From a systems integration perspective, the AL1024NK8D addresses a critical requirement in security deployments: reliable, distributed power with automatic battery backup. During planning phases for multi-zone installations, I've found this dual-input architecture particularly valuable when designing systems where AC redundancy or battery failover must be transparent to downstream devices. The instantaneous transfer capability eliminates the momentary power loss that can reset or interrupt device operation—a common pain point in access control and alarm system deployments.

Technical Highlights:

• Eight Independent Outputs: Each PTC-protected output can be isolated or supervised independently, allowing granular control over power distribution across multiple subsystems without central breaker dependency
• Dual-Input Steering: The AL1024NK8D accepts input from two independent power supplies, enabling true N+1 redundancy or primary/backup configurations without additional external relays
• Battery Charging Integration: On-board charger eliminates separate charging equipment for sealed lead acid batteries up to 12AH; larger capacity batteries (40AH, 65AH) are supported via external enclosure mounting
• Comprehensive Supervision: AC Fail, Battery Fail, and Battery Presence monitoring provide real-time status without polling, enabling immediate alerting of power faults to downstream monitoring systems

Deployment Considerations:

• Verify AC input availability at 115VAC 60Hz with capacity for 4.2A draw; confirm fusing compatibility (5A/250V) within the facility's main distribution panel
• Plan battery sizing based on runtime requirements; 12AH internal capacity suits short-term backup scenarios, but external 40AH or 65AH installations are recommended for extended outages or high-load draws
• Leverage the eight independent outputs to segregate critical circuits (access readers, door locks) from secondary loads (signage, ancillary sensors), ensuring graceful degradation if power becomes constrained
• Position the AL1024NK8D within BC400 enclosure near the point of load distribution to minimize voltage drop across long cable runs to remote devices

For integrators handling mid-to-large security installations requiring transparent battery failover and distributed 24VDC power, the AL1024NK8D reduces design complexity by consolidating power distribution, charging, and supervision into a single kit. The UL294 and UL603 listings ensure code compliance for access control and burglar alarm applications. I recommend this solution for any project where instantaneous backup power transfer and independent output supervision are non-negotiable requirements.