HES MCL-24 Magnetic Cabinet Lock 24V DC
The HES MCL-24 is a 24-volt DC electromagnetic cabinet lock engineered for equipment enclosure security and access control integration. This device provides fail-safe and fail-secure operational flexibility — meaning you can configure it to unlock on power loss (fail-safe, for emergency egress) or remain locked (fail-secure, for maximum perimeter protection). That operational choice matters: in a data center, you might want fail-safe behavior; in a secure server cabinet, fail-secure is mandatory.
Key Features
- 24V DC electromagnetic operation: Integrates directly with standard access control power supplies and most commercial panels without requiring isolated power runs. This simplifies cabinet-level deployments across distributed security architectures.
- Fail-safe and fail-secure modes: Choose your security posture per installation. Fail-safe unlocks on power loss or signal interruption — critical for life-safety zones. Fail-secure remains locked without power — the correct choice for sensitive network equipment or restricted-access storage.
- Compact magnetic lock form factor: Designed for direct integration into cabinet doors and enclosure frames. The magnetic design eliminates moving strike plates that can wear or jam, reducing maintenance overhead compared to solenoid locks.
- Standard 24V DC power compatibility: Works with existing access control infrastructure — no proprietary supplies needed. This matters when you're retrofitting multiple cabinets or integrating into an estate of different access control platforms.
- Suitable for telecom, network, and enterprise environments: Proven in server rooms, network closets, equipment racks, and cable enclosures where centralized access management is required. The MCL-24 handles high-traffic scenarios without performance drift.
- Distributed access control integration: Pairs with readers, credential systems, and access panels to enforce role-based cabinet access. Audit trails and time-based restrictions flow through your existing access control system.
Integration and Deployment Context
The MCL-24 supports typical enterprise access control architectures. You integrate it through standard door control modules or relay outputs on your access panel, meaning no special firmware or protocol bridges are required. Installation is straightforward: mount the magnetic lock body to the cabinet frame, mount the strike plate to the door, and wire the 24V control signal through your access control system. The compact footprint fits standard cabinet hinge areas without modification. Because the MCL-24 operates on fail-safe/fail-secure logic rather than credential-dependent logic, it integrates cleanly with badge readers, biometric systems, and PIN pads — your access control system tells the lock when to open, regardless of reader technology.
When integrating the MCL-24 into a larger security infrastructure, consider your power distribution strategy. A dedicated 24V access control power supply with battery backup ensures the lock functions during mains power loss and allows emergency unlock without manual intervention. If fail-safe behavior is required (unlock on power loss), ensure your UPS or battery backup is sized appropriately — continuous power loss will unlock the cabinet, which is the intended safety behavior.
Frequently Asked Questions
Q: Can the MCL-24 be configured for both fail-safe and fail-secure operation?
A: Yes. The MCL-24 supports both modes. Fail-safe (unlock on power loss) is typical for emergency egress zones. Fail-secure (remain locked without power) is standard for restricted equipment access. Configuration depends on your access control panel's relay wiring — your integrator sets this at commissioning.
Q: What access control systems work with the MCL-24?
A: The MCL-24 is compatible with any access control panel that provides a 24V DC relay output or door control module output. This includes most commercial systems (Honeywell, Salto, Assa Abloy, etc.). ONVIF or IP-based integrations require a bridge to standard 24V relay control, which most systems support.
Q: Does the MCL-24 require a separate power supply?
A: The MCL-24 draws power from a standard 24V DC access control supply — the same supply that powers readers and control modules. No isolated power run is needed unless your architecture requires redundant supplies for battery backup or fail-safe operation.
Q: Is the MCL-24 suitable for outdoor equipment cabinets?
A: The MCL-24 is designed for indoor and protected outdoor environments. For direct-exposure outdoor cabinets, confirm environmental rating and mounting location with your integrator. Temperature and humidity extremes may affect electromagnetic response — consult the specifications for your climate zone.
Q: Can the MCL-24 be retrofitted to existing cabinets?
A: Yes. The compact magnetic lock design fits most standard cabinet frames and doors without modification. Mounting templates and hardware facilitate retrofit without cutting or reinforcing door structures.
Q: What is the lifespan of the MCL-24 compared to solenoid locks?
A: Magnetic locks have no moving strike components, so they typically outlast solenoid locks in high-cycle environments. No lubrication or strike adjustment is needed. Lifespan depends on duty cycle, power quality, and environmental conditions.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The MCL-24 is a straightforward, dependable choice for cabinet-level access control where you need electromagnetic locking without complexity. The 24V DC architecture is the real win here — it slots directly into existing access control infrastructure, no custom power distribution or isolation required.
Technical Highlights:
- 24V DC operation: Standard across enterprise access control — integrates seamlessly with panels from Honeywell, Assa Abloy, Salto, and most commercial vendors. Eliminates the need for proprietary supplies or power isolation.
- Fail-safe/fail-secure switching: The ability to configure both modes from a single device means you don't need to stock two SKUs or choose between safety and security at purchase time. Set it per cabinet based on your risk posture.
- Magnetic lock design: No moving solenoid plungers or strike plates. This means lower maintenance, longer lifespan in high-cycle applications, and no creep or drift in performance over time.
Deployment Considerations:
- Power quality matters. If your 24V supply is noisy or heavily loaded, electromagnetic response can vary slightly. Ensure your power supply is dedicated or uses low-impedance distribution to the lock.
- In fail-safe configurations, your battery backup strategy is critical. The MCL-24 will unlock on power loss — a feature, not a bug — but you need UPS capacity to handle sustained outages or you'll default to unlocked state, which may not be acceptable for sensitive environments.
Deploy the MCL-24 in server rooms, network closets, and equipment racks where you're enforcing role-based cabinet access through an access control panel. It's the right solution when you want centralized access management without proprietary hardware or vendor lock-in. Not the right choice if you need IP-addressable locking (use an IP-based access control reader/lock module instead) or if your cabinet is uncontrolled outdoor exposure (environmental sealing becomes a concern).
