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LCN SEM7840 DKBRZ Electromagnetic Door Holder, Wall-Mounted, Bronze, Fail Safe - Electromagnetic Door Holders & Releases
LCNElectromagnetic Door Holders & Releases

LCN SEM7840 DKBRZ Electromagnetic Door Holder, Wall-Mounted, Bronze, Fail Safe

3G Electric supplies the LCN SEM7840 DKBRZ Electromagnetic Door Holder, a wall-mounted, bronze unit with a Fail Safe failure mode. As a global industrial solutions provider, we interpret customer demand and deliver…

SKU 3G-OTH-512613

Also listed as: SEM7840DKBRZ · SEM7840-DKBRZ

Brand
LCN
Item
SEM7840 DKBRZ Electromagnetic Door Holder, Wall-Mounted, Bronze, Fail Safe
Part Number
SEM7840 DKBRZ
Category
Electromagnetic Door Holders & Releases
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

LCN
Manufacturer Part Number
SEM7840 DKBRZ
Type
Bronze
Failure Mode
Fail Safe

Technical Documents

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

Product Description

3G Electric supplies the LCN SEM7840 DKBRZ Electromagnetic Door Holder, a wall-mounted, bronze unit with a Fail Safe failure mode. As a global industrial solutions provider, we interpret customer demand and deliver genuine 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 SEM7840 DKBRZ Electromagnetic Door Holder used for?

The LCN SEM7840 DKBRZ is a wall-mounted electromagnetic door holder used to hold fire or smoke doors open until a fire alarm triggers. Its Fail Safe mode releases the door automatically upon power loss, ensuring fire compartmentation in commercial buildings, hospitals, and schools.

What are the specifications of the LCN SEM7840 DKBRZ?

The LCN SEM7840 DKBRZ is a bronze, wall-mounted electromagnetic door holder with a Fail Safe failure mode. It is manufactured by LCN under part number SEM7840 DKBRZ. This unit releases the door when power is interrupted, meeting fire safety code requirements for automatic closing.

Where to buy the LCN SEM7840 DKBRZ worldwide?

3G Electric supplies the LCN SEM7840 DKBRZ worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source genuine LCN equipment across 14 industrial departments and beyond.

How to install the LCN SEM7840 DKBRZ door holder?

Install the LCN SEM7840 DKBRZ on a wall at the door's open position, typically 6–12 inches from the hinge. Mount the strike plate on the door, align the magnet face, and connect 24 VDC power per local codes. Test that the door releases when power is cut. Consult a licensed electrician.

Used in

Common applications for LCN
Manufacturing quality control — LCN Force Gauge (ADA/FG) for verifying spring tension in assembly lines
Packaging industry — LCN Force Gauge for testing seal strength or compression of packaging materials
Maintenance and repair — LCN Force Gauge for checking actuation force of mechanical switches or valves
Material testing — LCN Force Gauge for measuring force in simple tensile or compressive tests on small components
Educational labs — LCN Force Gauge for demonstrating basic force measurement principles in engineering courses
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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.

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Floor-mounted electromagnetic door holder constructed of aluminum. Fail-safe operation releases the door upon power loss, allowing automatic closure. Used to hold fire-rated doors open in commercial and industrial buildings
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Floor-mounted electromagnetic door holder constructed of aluminum. Fail-safe operation releases the door upon power loss, allowing automatic closure. Used to hold fire-rated doors open in commercial and industrial buildings

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