Brushed Aluminium Magnetic Lock - Specifications, Features & Selection Guide

Overview: What Is a Brushed Aluminium Magnetic Lock?

A brushed aluminium magnetic lock (maglock) uses an electromagnet and an armature plate to secure doors without mechanical latching. The aluminium case offers corrosion resistance and a modern finish popular for glass, timber, and metal doors in commercial, education, and maker projects. Maglocks are typically specified by holding force (kg or N), voltage, current draw, and mounting type.

Common Applications in South Africa

• Office access control and server-room doors in tertiary institutions.
• Maker labs and workshops where retrofit non-invasive locking is preferred.
• Integration with access panels, exit buttons, and relay modules for automation.

Key Specifications Explained

When evaluating a brushed aluminium maglock, check the manufacturer datasheet for core specs. Below are the attributes that determine fit and performance.

Mechanical Mounting Types

Mounting method determines whether a maglock will suit a particular door. Common mounts include:

• Standard shear mount - for in-frame installation on wooden/metal doors.
• Glass door mounting kit - armature with glass clamp and adhesive plate.
• Bracket (L or Z) for surface mount on frames or oversized doors.

Check Communica's collections for enclosures and mounting hardware that pair with maglocks: Collections.

Environmental & Durability Considerations

Brushed aluminium is resistant to rust but not impervious to coastal salt corrosion - for coastal installations consider stainless hardware and more frequent maintenance. Verify ingress protection and recommended operating temperature range on the product datasheet.

For project planning, review branch stock and pickup options when sourcing parts locally: 12 VDC.

Electrical Sizing and Power Calculations

Correctly sizing the power supply prevents brown-outs and ensures reliable release times. Use the rated voltage and current from the maglock datasheet to calculate PSU requirements and cable voltage drop.

Basic power formula

P (watts) = V (volts) × I (amps). Example: a maglock rated 12 VDC at 0.8 A consumes 9.6 W. For 24 V models at 0.4 A, power is 9.6 W as well.

Example: PSU and fuse selection (ZAR context)

If you specify two 12 V 0.8 A maglocks on one supply: total current = 1.6 A. Add 25% headroom for inrush and aging: select a 12 VDC 2.5 A (or 3 A) PSU. In South Africa, typical off-the-shelf DIN or enclosed PSUs for such loads range from about ZAR 200-900 depending on brand and protections (estimates only).

Wiring and relay integration

Maglocks are commonly driven through access control relays, exit buttons, or door controllers. Use a relay or controller rated for the maglock voltage and current; if using a mechanical relay, include a flyback diode or use a rectifier/protection module on DC systems.

ASCII wiring diagram for a single-door 12 VDC maglock

[12V PSU +] ----+---- [NO Relay] ---- [Maglock +]
                 |
                [Controller]
[12V PSU -] ------------------------------ [Maglock -]

Exit button is wired in parallel to the relay coil so pressing it de-energises the lock via the controller.

Selection Criteria & Troubleshooting

Use this checklist when choosing a brushed aluminium maglock:

• Holding force meets or exceeds security requirements for the door type.
• Voltage matches site controllers and available PSUs (12 V vs 24 V).
• Mounting kit compatible with door material (glass clamp for frameless glass).
• Environmental tolerance matches location (coastal vs inland).
• Accessories (armature plate, spacers, brackets) included or ordered separately.

Common issues and fixes

• Weak pull: check armature alignment and ensure faces are clean and flat.
• Intermittent locking: measure supply voltage under load for drops; increase PSU capacity or reduce cable length/size.
• Door misalignment: use spacer plates or adjustable brackets to improve contact.
• Corrosion at coastal sites: inspect fasteners regularly and apply appropriate coatings.

For component sourcing, compare part options in Communica’s product index and brand listing to match specs and accessories: All Products and Shop by Brand.

Installation & Education Use Cases

For education and makers, brushed aluminium maglocks provide a visually clean solution for lab doors and storage cabinets. When used in student projects, emphasise safe low-voltage practice: isolate mains, secure PSU enclosures, and use appropriately rated connectors and fuses. Communica’s about page gives background on local support and distribution useful for procurement teams: Automatic Sanitiser Dispensers in South Africa: A Technical & Practical Guide.

Sources

• Communica - Collections and product categories
• Communica - Branches & Trading Hours (stock pickup and lead-time planning)
• Electromagnet - technical overview (Wikipedia)
• Electrical power calculations and basics