In 2025 securing commercial spaces means going beyond locks and keys. For office doors, retail entrances or access controlled areas 600 lb electromagnetic locks (maglocks) are the way to go—reliable, efficient and built for modern security needs.
This guide is for you whether you’re a technician, access control installer or small business owner.
A 600 lb magnetic door lock (maglock) is a fail-safe security solution ideal for commercial, industrial, and retail environments. With up to 600 pounds of holding force, it offers reliable protection while meeting modern safety requirements.
Whether you’re an installer, technician, or small business owner, this guide will help you:
- Choose the right 600 lbs maglock for your door
- Ensure code compliance (UL 294, ANSI/BHMA, IBC 2024)
- Understand wiring options (12VDC, 24VDC, PoE)
- Pick the best brackets and accessories
- Install and troubleshoot
What is a 600 lbs Maglock and how does it work?
A 600 lbs magnetic door lock is an electromagnetic locking system that secures doors without the need for mechanical latches or bolts.
When an electric current flows through the magnet it generates a magnetic field that attracts a metal armature plate on the door and holds it closed with up to 600 pounds of force.
Maglocks are fail safe, meaning they release when power is interrupted. This makes them perfect for fire safety and emergency exit requirements.
What’s the difference between a 600 lbs and 1200 lbs mag lock?
When choosing between electromagnetic locks, the decision often comes down to holding force and installation needs. Here’s a clear side-by-side comparison to help you pick the right lock for your application:
| Feature | 600 lb Maglock | 1,200 lb Maglock |
|---|---|---|
| Holding Strength | Up to 600 pounds – ideal for interior commercial doors | Up to 1,200 pounds – better for exterior and high-security doors |
| Recommended Use | Offices, clinics, storage rooms | Warehouses, gates, restricted access zones |
| Power Consumption | Low – compatible with 12VDC or 24VDC | Moderate to high – often requires stronger PSU |
| Size & Weight | Compact, lighter | Larger body and mounting footprint |
| Installation Effort | Easy for DIY and small systems | Moderate – better for experienced installers |
| Average Cost | $50–$80 | $80–$150+ |
When is a 600 lb Maglock Code-Compliant?
When it comes to safety and building compliance, 600 lb maglocks must meet key industry standards—and knowing them makes a big difference.
First, UL 294. This certification ensures your maglock is reliable for access control, covering electrical performance, durability, and fire safety. Most commercial-grade maglocks with this listing are ideal for offices and light industrial spaces.
Next is ANSI/BHMA A156.23, which focuses on holding strength, mechanical testing, and product lifespan. If your project needs solid performance, ensure your 600 lbs magnetic door lock meets this standard.
Don’t overlook the requirements set by the IBC 2024 (International Building Code) when choosing an electromagnetic lock. This code mandates that maglocks must automatically release during power outages and allow occupants to exit easily without using tools or specialized knowledge.
In addition, most local regulations require that a 600 lbs electromagnetic lock be paired with a request-to-exit (REX) button or a motion sensor to ensure safe egress.
Before installing any system, be sure to review your local code amendments to ensure full compliance. Following these standards will ensure your 600-pound mag lock setup is safe, compliant, and ready for the job!
Powering Your 600 lbs Electromagnetic Lock
Proper power setup is key to performance and safety especially when integrating the 600 lbs maglock with an access control system.
Most 600 lb maglocks are dual voltage, 12VDC or 24VDC. For shorter cables or single door setups 12VDC is enough. For larger systems or longer wiring 24VDC is better due to less power loss and higher efficiency. Always use a regulated power supply that matches the voltage.
For advanced setups Power over Ethernet (PoE) kits can deliver power and control signals through a single Ethernet cable, great for retrofits or when power lines are hard to reach.
At FPC Security all 600 lb maglocks support 12VDC and 24VDC. We also have compatible power supplies and access control kits so you don’t have to worry about mismatched components.
Indoor vs Outdoor 600 lb Magnetic Door Locks
For most indoor applications—offices, clinics, internal doors—standard aluminum maglocks are fine. They’re compact, reliable and integrate with access control systems.
For outdoor or exposed locations weatherproof housings are a must. These maglocks have sealed electronics, rust resistant coatings and IP rated enclosures to withstand moisture, dust and extreme temperatures.
Always check the lock’s environmental rating for areas like entrances, loading docks or unconditioned spaces.
Bracket Choices: L, Z, and U Brackets
Maglocks need proper mounting brackets based on the door and frame type:
L-Bracket: For when the door frame is narrow and for outswing doors.
ZL-Bracket: Ideal for inward-opening doors, this bracket helps mount the armature plate to align with the electromagnet.
U-Bracket: Secures frameless glass doors without damaging the glass.
I Bracket for Armature Plate: This is helpful when the door leaf is too thick for screws.
These brackets ensure proper alignment, maximum holding force, and minimal stress on door hardware.
Required Accessories for Your 600 lbs Electromagnetic Lock
Enhance your 600 lbs maglock system with these key accessories:
- Request-to-Exit (REX) Button: Allows manual egress, required by fire codes.
- Motion Sensor: Unlocks the door automatically when approached from inside.
- Time Delay Relay: Controls how long the door stays unlocked after access.
Cost Breakdown
When installing a 600-pound mag lock, consider the lock, accessories, and optional upgrades.
(Click the image to view a larger version)
At FPC Security, we provide all components in one place—high quality, code-compliant, and ready to install—so you don’t have to worry about mismatched parts or unreliable brands.
How to Install a 600 lb Magnetic Door Lock (Step-by-Step)
Prefer watching instead of reading? The following video walks you through each step visually — and if you prefer, the full written guide is detailed below the video.
Step 1: Mount the Magnet to the Door Frame
a. Start by finding the exact spot on the door frame where you’ll install the magnetic door lock.
b. Drill the holes for the armature plate in the door using the provided sticker template.
c. Separate the cover from the body using the Allen wrench
d. Attach the mounting plate to the door frame using the provided self-tapping screws. Align it with the mark from the previous step.
e. Thread the wires through the hole in the mounting plate and into the electromagnet unit.
f. Secure the electromagnet to the mounting plate with the Allen head screw. Place the cover back on and secure it with screws.
g. Tighten the anti-tamper nuts to prevent unauthorized access and to keep the fixing screw from loosening over time.
Make sure the 600-pound mag lock is properly aligned and securely in place to ensure it works perfectly and delivers maximum holding strength.
Common issues like misaligned holes or loose screws can make installation a nightmare. Double check measurements, use a level for alignment, tighten screws well and add spacers if needed for stability.
Step 2: Attach the Armature Plate to the Door
a. Insert the guide pin into the armature plate (do not overtighten).
b. Tighten the inner hex nut on the back side of the door leaf.
c. Fasten the armature plate screw to the nut. (Make sure to include the rubber washers, and add a metal washer if necessary.)
Don’t over tighten the screws, this can prevent the plate from moving and weaken contact. Check the washer is in place and the plate moves slightly when touched. Reposition if needed to ensure it aligns properly when the door closes.
Step 3: Connect the Wires to the Power Supply
With the mechanical components installed, connect the maglock to power. Most 600 lb maglocks support 12VDC or 24VDC.
Connect the red wire to the positive terminal and the black to the ground or negative. For an access control system, connect the wires through the relay to control the lock. Secure connections and ensure no exposed wire.
If the 600 lbs magnetic door lock doesn’t work, check your wiring. Reversed polarity or unstable voltage can prevent activation.
Use a multimeter to confirm the voltage matches the maglock’s rating. For longer wire runs, use thicker cables or 24VDC to prevent voltage drop. Test the lock before finalizing and secure wires in conduit if needed.
Step 4: Install the REX Button or Motion Sensor
To comply with egress codes, install a request-to-exit (REX) button or motion sensor. Mount the REX button at an accessible height or install the sensor above the door to detect movement in the exit path. Wire the device into the power circuit or access control panel.
If the sensor doesn’t trigger or the REX button fails to disengage the lock, check placement and wiring.
Ensure the device interrupts power correctly, adjust sensor range and delay, and verify the REX button is wired in series with the 600 lbs magnetic door lock. Test for consistent unlocking.
Step 5: Test the Entire System
Once installed, test each part. Close the door to ensure the magnet fully engages with the armature plate.
Use the REX button or motion sensor to unlock the door and confirm smooth release. Test multiple cycles to ensure consistent performance.
Adjust settings, check LED indicators, and inspect for buzzing or weak engagement.
If problems arise, like inconsistent locking or buzzing, check alignment, voltage, and component tightness. Clean contact surfaces, confirm steady power, and adjust relay or sensor timing if needed. Always perform final tests under real conditions to confirm reliability and security.
FAQs
Q: Can I install a 600lb maglock on a glass door?
Yes, with the correct U-bracket designed for frameless glass. Check the manufacturer’s instructions for compatibility.
Q: What voltage is best for a 600-pound mag lock?
Either 12VDC or 24VDC. Use 24VDC for long cable runs to avoid voltage drop. Always confirm voltage requirements in the manufacturer specs.
Q: Is a 600 lbs magnetic door lock safe for fire exits?
Yes, as long as it’s paired with a motion sensor or REX button and unlocks during power failure.
Q: How do I know if it's working properly?
The magnet should engage instantly. Use a Door Status Sensor (DSS) or access control panel to confirm lock status.
Secure Your Building with Confidence
At FPC Security, we provide 600 lbs maglock kits ready for quick shipping. Whether for glass, wood, or metal doors—indoor or outdoor—we have the full solution.
👉 Browse our 600 lb maglock kits
👉 Explore our compatible maglock brackets
🛠️ Need help choosing the right setup? Contact our support team—we're with you from spec to install.
