EXW Singapore — collect or forward from our Singapore office.

3G Electric
LCN SEM7820-825 AL Electromagnetic Door Holder - Electromagnetic Door Holders & Releases
LCNElectromagnetic Door Holders & Releases

LCN SEM7820-825 AL Electromagnetic Door Holder

3G Electric supplies the LCN SEM7820-825 AL Electromagnetic Door Holder, a floor-mounted, aluminum unit with a Fail Safe failure mode. We interpret customer demand and deliver genuine industrial equipment across 14…

SKU 3G-OTH-512602

Also listed as: SEM7820825AL · SEM7820 825 AL · SEM7820-825-AL

Brand
LCN
Item
SEM7820-825 AL Electromagnetic Door Holder
Part Number
SEM7820-825 AL
Category
Electromagnetic Door Holders & Releases
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

LCN
Manufacturer Part Number
SEM7820-825 AL
Series
7800
Type
Aluminum
Finish
Aluminum Painted
UNSPSC
31162804
Voltage
120V AC; 12V DC; 24V AC/DC
Standards
ANSI/BHMA 156.15; UL Listed
Catalog Page
N/A
Failure Mode
Fail Safe
Power Source
AC Power; DC Power
Mounting Style
Screw In
Lock Body Depth
5-1/8 in
Lock Body Width
4-9/16 in
Country of Origin
China (subject to change)
Mounting Location
Floor
Strike Base Width
1-7/8 in
Strike Projection
1-5/8 in
Overall Projection
6-3/4 in
Strike Base Height
2-3/8 in
Maximum Holding Force
35 lb

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

LCN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

3G Electric supplies the LCN SEM7820-825 AL Electromagnetic Door Holder, a floor-mounted, aluminum unit with a Fail Safe failure mode. We interpret customer demand and deliver genuine industrial equipment across 14 departments—and far more—with specialist depth in combustion, pumps, and controls as a trust anchor.

Frequently Asked Questions

What is the LCN SEM7820-825 AL electromagnetic door holder used for?

The LCN SEM7820-825 AL is a floor-mounted electromagnetic door holder used to hold fire-rated doors open until power is interrupted. In fail-safe mode, it releases the door upon power loss, allowing automatic closure for fire safety in commercial and industrial buildings.

What are the specifications of the LCN SEM7820-825 AL?

The LCN SEM7820-825 AL is an aluminum electromagnetic door holder with a fail-safe failure mode. It is floor-mounted and manufactured by LCN. The part number is SEM7820-825 AL. 3G Electric supplies this genuine LCN unit for industrial door control applications.

Where to buy the LCN SEM7820-825 AL worldwide?

3G Electric supplies the LCN SEM7820-825 AL electromagnetic door holder worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine LCN equipment and support your procurement needs across all regions.

How to install a floor-mounted electromagnetic door holder?

Install the LCN SEM7820-825 AL by securing the floor plate with appropriate anchors, aligning the armature on the door, and connecting power to the electromagnet. Ensure the fail-safe wiring releases the door on power loss. Follow LCN's generic installation guide for proper clearance and voltage.

Used in

Common applications for LCN
Commercial office buildings — LCN 4010 Series top frame-mount door closers with regular arm and adjustable spring size 6 for interior doors.
Healthcare facilities — LCN SEM7810 series electromagnetic door holders for holding fire-rated corridor doors open and releasing on alarm.
Educational institutions — LCN 4810 Series track arm door closers for high-traffic exterior doors in aluminum finish.
Industrial plants — LCN SEM7820-825 AL floor-mounted electromagnetic door holders for fire doors in manufacturing areas.
Retail entrances — LCN 4010 Series bronze door closers with non-hold open and regular arm for ADA-compliant opening force.
Hospitality venues — LCN magnetic door holders SEM7850-828 AL for wall-mounted hold-open on smoke doors in lobbies.
Not sure this is the right part? Photo-identify it→

LCN Products

3G Electric supplies LCN electromagnetic door holders & releases. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from LCN

View all LCN parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first