HES 320S 300 Pound Single Magnetic Lock
The HES 320S is a fail-secure electromagnetic lock engineered for professional access control installations where reliable door retention and controlled entry/egress enforcement are non-negotiable. With a 300-pound holding force, the 320S delivers dependable performance in standard indoor environments and integrates directly into networked access control infrastructure without requiring custom engineering.
Key Features
- 300-pound holding force: Securely retains standard and heavy-duty hollow metal, wood, and aluminum doors under normal operational conditions. Sufficient for most commercial office, retail, and secure facility applications without reinforcement.
- Dual voltage operation (12/24 VDC): Accepts both 12 VDC and 24 VDC power supplies from your existing access control system. Eliminates the need for a dedicated step-down transformer and simplifies wiring during retrofit or new construction.
- Fail-secure design: Lock remains engaged when power is lost or interrupted — a critical safety feature for controlled access enforcement. Ideal for areas where unauthorized entry during outages poses a security or operational risk.
- Single magnetic lock form factor: Compact footprint designed for standard door frame installations. Does not require extensive structural modification, reducing installation labor and material costs on retrofit projects.
- Standard electromagnetic locking technology: Operates seamlessly with conventional door control infrastructure — access control panels, proximity card readers, keypad entry systems, and electronic door strikes commonly deployed in commercial buildings.
- Retrofit and new construction ready: Compatible with hollow metal and wood door frames. Works with existing or new card reader and control panel ecosystems without proprietary software or specialized training.
Integration & Compatibility
The 320S integrates with control panels, card readers, and conventional electronic door control components standard to modern access control deployments. Power wiring to a 12 or 24 VDC supply ties directly to the lock's dual-voltage input. The fail-secure mechanism requires no external release device — your access control system energizes the coil to unlock the door during authorized entry, then de-energizes to re-engage the lock.
When planning a retrofit or new deployment, confirm your access control panel can supply sufficient current to hold the magnet energized during the unlock cycle. Current draw varies by voltage and operating mode; consult the product datasheet for exact power requirements. For large installations, coordinate with your system integrator or access control vendor to verify power budgeting across all locks in the system.
Typical Applications
- Commercial office buildings and corporate facilities with standard interior access control
- Educational institutions and campus secure entry points
- Healthcare facilities requiring controlled patient and staff access
- Government buildings and secure facility perimeter control
- Retail environments with restricted back-of-house or storeroom management
- Server rooms and IT infrastructure protection
- Warehouse and distribution center secure areas
When to Choose a Different Model
The 320S is purpose-built for standard indoor installations where 300-pound holding force and fail-secure operation align with your security posture. If your deployment requires outdoor or high-moisture environments, verify IP and temperature ratings against local environmental conditions — some applications may demand a variant rated for condensation or extreme temperature swings. For doors or frames requiring significantly higher holding force (in excess of 350 pounds under sustained load), consult the broader HES electromagnetic lock portfolio to identify a higher-capacity option.
Frequently Asked Questions
Q: What does fail-secure mean, and when do I need it?
A: Fail-secure locks remain locked when power is removed or lost. Choose this design when you need to enforce controlled access even during power outages — such as server rooms, secure storage, or areas where unauthorized entry during downtime poses risk. Fail-safe designs unlock on power loss, suitable for emergency egress or life-safety compliance in some jurisdictions.
Q: Can the HES 320S work with my existing 12 VDC access control system?
A: Yes. The 320S accepts both 12 and 24 VDC input, so it integrates with existing 12 VDC infrastructure without modification. No step-down transformer or additional power supply is required.
Q: What's the typical power draw when the lock is energized?
A: Current draw varies by voltage; refer to the product datasheet for exact specifications. When planning power supply sizing for multiple locks, ensure your access control panel or dedicated power supply can deliver sufficient current to hold all locks energized simultaneously during peak unlock cycles.
Q: Can I mount the 320S on any door frame?
A: The 320S is designed for hollow metal, wood, and aluminum door frames in standard commercial installations. Verify frame condition and material compatibility before installation. Retrofit projects may require minimal frame reinforcement depending on door condition and holding force demands.
Q: Does the 320S require a release button or additional hardware?
A: No. Release is controlled by your access control system — when a valid credential is presented, the system energizes the coil to unlock the door. No manual pushbutton or pull handle is built into the lock itself.
Q: What is the warranty on the HES 320S?
A: Warranty details are available in the product documentation. Contact your access control vendor or integrator for specific warranty terms and support options.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The HES 320S is a straightforward fail-secure electromagnetic lock built for integrators and facility managers who need 300-pound holding force without complexity. The dual 12/24 VDC input is the real practical win here — you don't need to stock separate SKUs or step-down transformers for different site power budgets. The 320S will work with whatever your existing access control panel supplies.
Technical Highlights:
- 300-pound holding force: Adequate for standard hollow metal and wood door frames in commercial, retail, and secure facility installations. Not overkill, not underdimensioned — sized for typical commercial load without reinforcement.
- Dual voltage (12/24 VDC): Single part number works across both 12 VDC and 24 VDC infrastructure. Reduces inventory complexity and simplifies retrofit work when older 12 VDC systems need upgrades or new buildings standardize on 24 VDC.
- Fail-secure operation: Lock stays engaged on power loss. Critical for data center access, secure storage, and controlled perimeter entry where unauthorized access during outages is unacceptable.
Deployment Considerations:
- Power budgeting is non-negotiable. The 320S draws current whenever it's energized — on large multi-lock deployments, verify your access control panel or dedicated power supply can handle all locks unlocking simultaneously. A single undersized power supply won't harm the lock, but it may prevent simultaneous access to multiple doors, creating operational friction.
- Frame preparation matters. The 320S is compact and doesn't demand major structural work, but the door frame must be in reasonable condition. Warped, cracked, or severely damaged frames reduce holding force effectiveness. Pre-inspect retrofit sites and budget for minor frame repair if needed.
Deploy the 320S in any standard commercial access control refresh or new office, retail, healthcare, or government building where you need reliable fail-secure retention without special environmental hardening. It's the right choice when your integrator spec calls for proven electromagnetic locking technology on hollow metal doors and your existing or planned access control infrastructure runs 12 or 24 VDC.
