Electric Magnetic Lock 500KG 1200LBS 12V Fail-Safe NC - Heavy Duty

In this review of the Electric Magnetic Lock 500KG 1200LBS, the bottom line is clear: installers and facility managers who need a compact, high-strength fail-safe lock for a single door will appreciate its holding power and simple DC12V operation. The review focuses on real-world use for Wooden, Metal, Glass and Fire Proof doors, and highlights the lock's most compelling trait - a 500kg (1200lbs) holding force delivered from a stainless steel assembly with built-in surge protection that makes it practical for access control installations.

Key Features

• Holding force: A 500kg (1200lbs) rated hold gives installers confidence the lock will resist forced entry on typical single-door applications.
• Fail-safe NC mode: Locks while powered and releases on power loss, which suits facilities that require safe egress during emergencies.
• Stainless steel construction: Corrosion-resistant materials help the lock keep a clean finish and reliable operation in indoor or sheltered outdoor locations.
• Built-in spike suppressor: Integrated voltage protection reduces the risk of control board damage when paired with access control electronics.
• Compact size: The 265 x 75 x 39mm lock body and 185 x 60 x 13mm armature plate fit most standard single-door frames without extensive modification.
• Wide compatibility: Designed for wooden, glass, metal and fire proof doors as well as cabinets, making it versatile for commercial settings.

Who It's For

The Electric Magnetic Lock 500KG is aimed at small to medium commercial properties, schools, clinics and workshops where a strong, fail-safe electromagnetic lock is needed for a single door. Electricians and locksmiths who install access control systems will value the DC12V supply and the integrated spike suppressor that simplifies wiring to existing control panels.

This unit is less suitable for installations that require a fail-secure (locked on power loss) solution or where concealed mounting is mandatory; in those cases a different lock mode or a mortise-style mechanical lock would be a better choice.

Pros & Cons

Pros

• High 500kg (1200lbs) holding force provides robust security for single doors.
• Stainless steel and anti-residual magnesium design improve durability and reduce residual magnetism.
• Fail-safe NC operation and DC12V compatibility make emergency egress straightforward.
• Built-in voltage spike suppressor protects connected electronics during power events.

Cons

• Fail-safe mode unlocks on power loss, which may not suit applications needing lock-down capability during outages.
• Surface-mounted design may be more visible than concealed lock options for aesthetic-sensitive installations.

Specifications

Brand	NCLTHS
Holding force	500kg (1200lbs)
Mode	NC (Fail-Safe) - locked while powered
Voltage	DC12V
Lock size	265 x 75 x 39mm (10.43in x 2.95in x 1.54in)
Armature plate size	185 x 60 x 13mm (7.28in x 2.36in x 0.51in)
Materials	Stainless steel, anti-residual magnesium design

Our Verdict

For installers who need a straightforward, heavy-duty electromagnetic lock that supports DC12V access control systems, this 500kg / 1200lbs unit offers strong holding power, corrosion-resistant construction and built-in spike protection at a reasonable value. Choose this lock when fail-safe operation and visible surface mounting are acceptable for the site.

Frequently Asked Questions

Can this lock be used on glass doors?
Yes, the lock is suitable for glass doors when used with the correct mounting brackets or armature plate adapters for glass installations.

What happens on a power cut?
This unit is fail-safe NC mode so it unlocks when power is removed, allowing free egress during outages or emergencies.

Is additional surge protection required?
The lock includes a built-in voltage spike suppressor, so additional protection is usually not required, though whole-site surge protection is still recommended.