Altronix ACMB Series Access Power Controller with 8 PTC Outputs

In this review of the Altronix ACMB Series Access Power Controller, the bottom line is simple: this unit is for installers and facilities managers who need a dependable, protected multi-output supply to power locking devices and access control peripherals. The ACMB converts standard 115V AC into eight independently controlled 12V or 24V DC outputs with a combined 6 amp continuous capacity, and its selectable fire alarm disconnect and built-in PTC protection make it a practical choice where safety and circuit isolation matter. For anyone wiring multiple mag locks, electric strikes or door holders, the ACMB balances flexibility and protection in a single board.

Key Features

• Eight independently controlled outputs: Each of the eight PTC outputs can be triggered separately to power individual locks or devices without requiring separate supplies.
• Selectable fire alarm disconnect: Fire alarm disconnects can be set as latching or non-latching for any combination of outputs, allowing compliance with site-specific life-safety requirements.
• Short circuit and thermal protection: Built-in PTC protection helps prevent damage and nuisance failures by isolating faults and limiting excessive current.
• Alarm output relay: A form C alarm relay indicates when an FACP input is triggered, providing a dry contact for integration with central monitoring.
• AC fail supervision: AC fail is supervised via a form C contact so downstream systems can detect and respond to loss of mains power.
• Lifetime warranty: The lifetime warranty gives long-term assurance for professional installations where reliability matters.

Who It's For

The ACMB is best suited for security integrators, locksmiths, and building engineers who install and maintain access control systems that require a single, centralized power source for multiple devices. Its ability to operate in 12V or 24V modes and handle both Fail-Safe and Fail-Secure hardware makes it flexible for mixed-door environments.

It is less appropriate for small DIY projects that need only one or two outputs or for installations demanding higher total current than the 6 amp continuous supply provided. Sites that require remote or networked power management features beyond hard relay inputs should consider more feature-rich controllers.

Pros & Cons

Pros

• Eight PTC-protected outputs allow isolated responses to short circuits and reduce system downtime.
• Selectable latching or non-latching fire alarm disconnects make the unit adaptable to code and site needs.
• Form C alarm and AC fail relays provide clear, integrable supervision signals for central systems.

Cons

• 6 amp total continuous output limits use with large numbers of high-current locks or other heavy devices.
• Unit requires a 115V AC feed and basic electrical wiring skills for proper installation, so it is not plug-and-play for end users.

Specifications

Our Verdict

The Altronix ACMB Series is a practical, well protected access power controller for professional installations that need multiple independently controlled outputs and reliable supervision. Installers will value the selectable fire disconnects, PTC protection and form C relays; however, sites with heavy lock loads should account for the 6 amp total limit. For most multi-door access control applications, the ACMB delivers solid value through flexibility and built-in safety features.

Frequently Asked Questions

Can the outputs be mixed between 12V and 24V?
Outputs are selectable for 12V or 24V operation for the unit, but wiring should follow the installer guide to ensure consistent voltage to connected devices.

Does the unit indicate when AC power fails?
Yes, AC fail supervision is provided via a form C contact so monitoring equipment can detect mains loss.

Are the fire alarm disconnects configurable per output?
Yes, the fire alarm disconnect can be set as latching or non-latching for any or all of the eight outputs.