LCN SEM7830 SEM7830 Electromag...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$563.00
$377.67
LCN LCN SEM7830 Surface Wall Mounted Heavy Duty Door Holding Magnet - Powder Coat Finish LCN-SEM7830

LCN SEM7830 SEM7830 Electromagnetic Door Holder with 35 Pound Holding Force and Tri-Voltage Design

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Model: SEM7830-689
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$563.00
$377.67
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LCN SEM7830 Electromagnetic Door Holder with 35 Pound Holding Force and Tri-Voltage Design

Professional Fire Safety Door Control Solution

The LCN SEM7830 is a surface wall-mounted electromagnetic door holder from the proven Sentronic 7800 Series, delivering 35 pounds of holding force through tri-voltage design (12V/24V/120V). This fail-safe magnet automatically releases when fire alarm systems interrupt electrical current, allowing doors to close manually until power returns. UL listed for metal smoke barrier and labeled fire doors with ANSI/BHMA A156.15 certification, the SEM7830 features die-cast housing construction with 6-3/4" projection and is suitable for pocket door installations.

Professional Features & Benefits

  • Heavy-Duty Holding Force: Tri-voltage design provides 35 pounds of reliable holding force for secure door positioning in commercial applications.
  • Fail-Safe Fire Safety Operation: Automatically releases when electrical current is interrupted during fire alarm conditions, ensuring proper door closure for life safety compliance.
  • Flexible Power Options: 12V/24V/120V tri-voltage compatibility allows adaptation to various electrical systems and installation requirements.
  • Die-Cast Housing Construction: Heavy-duty die-cast housing with powder coat finish provides exceptional durability for demanding commercial environments.
  • Surface Wall-Mounted Design: 6-3/4" projection configuration allows surface mounting on walls with included wood and machine screw fastener pack for versatile installation options.
  • Pocket Door Compatibility: Suitable for pocket door installations with optional armature extensions available for extended reach applications.
  • UL Listed Fire Door Compliance: UL listed for metal smoke barrier and labeled fire doors ensuring code compliance for fire-rated openings.
  • ANSI/BHMA Certification: Tested and certified under ANSI/BHMA A156.15 standards for professional-grade performance and reliability.
  • Manufacturer Warranty: Protected by 2 Year warranty for added confidence and protection in commercial installations.

Technical Specifications

  • ADA Compliant: Yes
  • BAA Qualified: Yes
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Type: Interior Door
  • Electronic: Yes
  • Finish Type: Powder Coat
  • Mounting Detail: Surface - Magnet
  • Mounting Method: Wall Mount
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: SEM7830
  • Product Projection: 6-3/4"
  • Product Subgroup: Electromagnetic Door Holder / Releases
  • Product Type: Door Magnets
  • Product Voltage: 12V/24V/120V
  • Series: SEM 7800 Series
  • Subcategory: Fire and Life Safety Closers
  • Warranty: 2 Year

Professional Applications

  • Commercial Building Fire Safety Systems
  • Healthcare Facility Smoke Barrier Doors
  • Educational Institution Fire-Rated Openings
  • Industrial Facility Emergency Egress Control
  • Multi-Tenant Residential Fire Door Compliance
  • Government Building Life Safety Systems
  • Retail Establishment Fire Code Compliance

Why Choose LCN Quality?

LCN SEM7830 electromagnetic door holders deliver professional-grade reliability with die-cast housing construction and UL listing for fire-rated applications. Protected by a 2 Year warranty and certified under ANSI/BHMA A156.15 standards for demanding commercial fire safety applications. Engineered for dependable fail-safe operation where life safety compliance is essential.

Product Specs

Series:
SEM 7800 Series
ADA Compliant:
Yes
Mounting Detail:
Surface - Magnet
Warranty:
2 Year
BAA Qualified:
Yes
Subcategory:
Fire and Life Safety Closers
Product Group:
Door Controls
Product Subgroup:
Electromagnetic Door Holder / Releases
Product Type:
Door Magnets
Door Type:
Interior Door
Finish Type:
Powder Coat
Commercial/Residential:
Commercial
Electronic:
Yes
Product Model:
SEM7830
Product Voltage:
12V/24V/120V
Mounting Method:
Wall Mount
Product Projection:
6-3/4"
Product Category:
Door Controls
Department:
Door Hardware

LCN SEM7830-689 – Frequently Asked Questions

1) Will the LCN SEM7830 door holder release the door when the fire alarm goes off?
That's exactly how it works. The SEM7830 is a fail-safe electromagnet: it holds the door open while it has power, and the moment the alarm panel cuts current to it, the magnet drops the armature and the door is free to close. Power has to be interrupted for release, so it needs to be wired to a circuit the fire alarm system controls, not a switched wall outlet. It's UL listed for metal smoke barrier and labeled fire doors and certified to ANSI/BHMA A156.15.
2) What voltage do I need to run an LCN SEM7830 electromagnetic door holder?
Any of three. The SEM7830 is tri-voltage, 12V, 24V or 120V, so one part number covers a low-voltage run off the fire panel or a 120V line-voltage circuit. That matters on retrofits where you don't know yet what the building gives you at the wall, and on multi-building standardization where you'd otherwise stock three different holders.
3) How far off the wall does the LCN SEM7830 hold the door open?
The SEM7830 has a 6-3/4 inch projection, so the magnet face sits 6-3/4 inches out from the wall surface it's mounted on. Measure from your finished wall to where the door leaf lands when open, and that gap has to be 6-3/4 inches for the armature to meet the magnet squarely. If the door swings back further than that, you need an armature extension rather than this holder alone.
4) Should I use a wall-mounted magnetic door holder or a closer with a built-in hold-open?
Two different tools. A wall magnet like the SEM7830 is the right call when the door has to release on alarm, because the magnet is wired into the fire alarm circuit and drops the door the instant power is cut. A mechanical hold-open arm on a closer does not release on alarm and cannot be used on a labeled fire door or smoke barrier. If the opening is fire rated or a smoke barrier, you want the electromagnetic holder. If it's a non-rated door you just want propped open, a hold-open arm is simpler and needs no wiring.
5) Can the LCN SEM7830 be used on a pocket door?
Yes. The SEM7830 is suited to pocket door installations, and where the reach comes up short an armature extension is available to close the gap. The magnet itself still mounts to the wall surface, so you need a solid, plumb wall face at the hold-open position.
6) What comes in the box with an LCN SEM7830, and what else do I need to order?
The SEM7830 ships with a fastener pack containing both wood and machine screws, so the magnet body can go into either wood blocking or a tapped metal substrate. You supply the door-side armature mounting into the leaf, the wiring and the connection to the fire alarm circuit, and an armature extension if the door doesn't reach the 6-3/4 inch projection. It's a wall-mount unit only, not a floor mount.
7) Does the LCN SEM7830 meet ADA and Buy American requirements for a government job?
Both are covered. The SEM7830 is ADA compliant and BAA qualified, which is what a federal, state or municipal spec typically asks for on door control hardware. Pair that with the ANSI/BHMA A156.15 certification and the UL listing for labeled fire doors and it covers the usual three lines on an institutional submittal.
8) What finishes does the LCN SEM7830 door holder come in?
Two: 689 aluminum and 695 dark bronze, both powder coat over a die-cast housing. 689 is the default across most commercial door control hardware, so it's the one that matches existing closers and holders in a typical facility; 695 is the pick when the trim package is dark bronze. Powder coat on die-cast holds up in corridor traffic where the unit gets bumped.
9) Can I close the door manually while the SEM7830 magnet still has power?
No, not without pulling against the magnet. The SEM7830 holds until current is interrupted, so under normal power the door stays put; once the alarm cuts the circuit the door closes manually and stays free until power is restored. If staff need to release the door at will without an alarm event, the circuit has to include a manual release switch, which is a wiring decision on your end.
10) Is the LCN SEM7830 rated for exterior doors?
It's specified for interior doors, and the applications it's built for are interior ones: smoke barrier and cross-corridor openings in healthcare, schools, multi-tenant residential and government buildings. For an exterior opening, look to a holder rated for that exposure instead of this one.
How fast can I get the LCN SEM7830-689 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the LCN SEM7830-689 come with a warranty?
Absolutely. The LCN SEM7830-689 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the LCN SEM7830-689?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the LCN SEM7830-689 from ZenSupply?
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