SDC HiShear 1561S Series Surfa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,300.00
$891.95
SDC SDC 1561S Series - 2000lb Holding Force Surface Electromagnetic Shear Locks SDC-1561S

SDC HiShear 1561S Series Surface Electromagnetic Shear Lock with 2000lb Holding Force

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Model: 1561SV
$1,300.00
$891.95
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,300.00
$891.95
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SDC HiShear 1561S Series Surface Electromagnetic Shear Lock with 2000lb Holding Force

Professional Electromagnetic Security Solution with Patented HiShear Technology

The SDC HiShear 1561S Series electromagnetic shear lock delivers superior security with 2000lb holding force and fail-safe operation for commercial door applications. This surface-mounted lock features patented floating armature assembly with special alloy steel locking tabs, auto-sensing dual voltage (12/24VDC) input, and advanced door alignment relock sensor technology. Designed and engineered in America, the 1561S provides architecturally superior appearance with adjustable vertical and lateral alignment to compensate for door gaps and misalignment.

Professional Features & Benefits

  • High Security Holding Force: 2000lb holding capacity provides exceptional security for commercial applications requiring maximum door control.
  • Patented HiShear Design: Floating armature assembly with special alloy steel locking tabs on both lock and armature assemblies for superior performance and durability.
  • Auto-Sensing Dual Voltage: 12/24VDC operation with automatic voltage detection eliminates installation complexity and provides flexible power options.
  • Fail-Safe Operation: Fail-safe locking mechanism ensures secure operation while meeting egress requirements for life safety applications.
  • Advanced Door Alignment Technology: Door alignment relock sensor with adjustable vertical and lateral alignment compensates for wide door gaps and warped or misaligned doors.
  • Noise Reduction Technology: Integrated noise dampeners greatly reduce locking and unlocking noise compared to other shear locks on the market.
  • Surface Mount Design: Surface mounted to push side of out-swing doors for straightforward installation on commercial grade hollow metal, wood doors, metal frames and Herculite doors with top rails.
  • Fire Safety Certifications: UL 10C Positive Pressure Fire Tests certified and ULC-S104 compliant for fire-rated door assembly applications.

Technical Specifications

  • Battery Operated: No
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Duty Level: Heavy Duty
  • Electronic: Yes
  • Fail-Safe/Fail-Secure: Fail-Safe
  • Holding Force: 2000
  • Mounting Method: Surface
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Model: 1561S
  • Product Subgroup: Electromagnetic Locks
  • Product Substrate: Aluminum
  • Product Type: Shear Locks
  • Product Voltage: 12/24VDC
  • Series: 1561S Series
  • Subcategory: Electromagnetic Locks

Professional Applications

  • Commercial Building Security Systems
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Government and Municipal Buildings
  • Industrial Facility Monitoring
  • Retail Loss Prevention
  • Emergency Exit Compliance

Why Choose SDC Quality?

SDC HiShear electromagnetic shear locks are designed, engineered and built in America with patented floating armature technology and special alloy steel construction for superior durability. Certified to UL 10C Positive Pressure Fire Tests and ULC standards, these locks provide professional-grade reliability for demanding commercial applications. Advanced electronic circuitry with door alignment relock sensor and noise dampening technology delivers dependable performance where security and architectural appearance are essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Electromagnetic Locks
Series:
1561S Series
Holding Force:
2,000 lbs
Product Group:
Electronic Access Controls
Product Subgroup:
Electromagnetic Locks
Product Type:
Shear Locks
Commercial/Residential:
Commercial
Battery Operated:
No
Electronic:
Yes
Duty Level:
Heavy Duty
Fail-safe / Fail-secure:
Fail-Safe
Product Model:
1561S
Product Voltage:
12/24VDC
Mounting Method:
Surface
Product Category:
Electronic Access Controls
Product Substrate:
Aluminum
Department:
Door Hardware

SDC 1561SV – Frequently Asked Questions

1) Will the SDC 1561S shear lock work on an in-swing door?
No. The HiShear 1561S is surface mounted to the push side of out-swing doors. If the door swings toward you from the secure side, this is the wrong mount, and a mortise-mounted shear lock like the Schlage Electronics GF3000 is the style to look at instead since it goes into the door or frame rather than onto the push face.
2) What doors can an SDC HiShear 1561S be mounted on?
Commercial grade hollow metal doors, wood doors, metal frames, and Herculite glass doors that have a top rail. The top rail matters on the Herculite: the armature has to land on rail material, so an all-glass door with no top rail is out.
3) Does the 1561S shear lock unlock in a fire alarm or power failure?
Yes, it is fail-safe, so cutting power releases the door. That is what makes it usable on an egress opening tied into a fire alarm or access control release, but it also means the opening is unsecured any time the power drops. If your application needs the door to stay locked without power, a shear lock in fail-safe is not the device.
4) Can the SDC 1561S be used on a fire rated door assembly?
Yes. The 1561S is certified to UL 10C Positive Pressure Fire Tests and is ULC-S104 compliant, which is what lets it go on a fire rated door assembly. Combined with fail-safe release, that covers the usual pairing of a fire door that has to unlock on alarm.
5) My door is warped and the gap is uneven. Will a shear lock still hold?
That is the case the 1561S is built around. The floating armature assembly plus adjustable vertical and lateral alignment lets you compensate for wide door gaps and warped or misaligned doors, and a door alignment relock sensor decides when the door is positioned to relock rather than slamming the tabs against a misaligned armature. On a badly hung opening that is the difference between a lock that bonds every time and one that reports faults.
6) What options do I have to specify when ordering an SDC 1561S shear lock?
Four choices go on the order. Bond Alert Status (BAS), yes or no, reports whether the lock is actually bonded to the armature. Door Position Switch (DPS), yes or no, reports whether the door is closed. Visual Status Indicator (LED), yes or no, gives a local lock status light at the door. Then the finish. BAS and DPS are the two most often missed: if your access control head end or alarm panel needs door and bond status back, you have to order the lock with them, not add them later.
7) What is the difference between the SDC HiShear 1561S and the Schlage GF3000 shear lock?
Both are heavy duty electromagnetic shear locks, but they mount differently and hold differently. The SDC HiShear 1561S is surface mounted, with 2,000 lbs of holding force and 12/24VDC auto-sensing input. The Schlage GF3000 is a mortise mounted shear lock rated at 3,000 lbs of holding force. If the door and frame are already prepped for a concealed mortise pocket, the GF3000 suits that opening; if you are retrofitting an existing opening without cutting the frame, the surface mounted 1561S is the one that goes on without milling.
8) I need more than 2,000 lbs of holding force on a shear lock. What should I use instead of the SDC 1561S?
The SDC HiShear 1561S is rated at 2,000 lbs of holding force. For an opening that calls for more, the Schlage GF3000 shear lock is rated at 3,000 lbs. Note that the GF3000 is mortise mounted rather than surface mounted, so the door and frame have to accept a concealed installation - it is not a drop-in swap for a surface applied lock.
9) What is the difference between a surface shear lock and a mortise shear lock?
Surface, like the SDC 1561S, mounts on the push face of the door and frame, so no door or frame machining is needed and it is the practical retrofit on an existing opening. Mortise, like the Schlage Electronics GF3000, recesses into the opening so nothing shows when the door is closed, which is what an architect asks for on a visible entrance, but it requires prep and is normally a new-door or shop-modified job. Both are heavy duty commercial devices; the choice is usually appearance versus how much you can cut.
10) What finishes does the SDC HiShear 1561S come in, and can I match the other doors in my building?
Six finishes: 335 Dull Black, 605 Bright Brass, 625 Bright Chrome, 626 Dull Chrome, 628 Dull Aluminum, and 710 Dark Bronze. That covers the standard BHMA finish numbers most commercial buildings are already standardized on, so a property manager matching a fleet of doors can usually pull the same number that is on the existing exit devices and closers. The housing itself is aluminum.
11) Do I need a separate door contact if I buy the 1561S with DPS?
No, not for door position. Ordered with the Door Position Switch option the lock reports door closed status itself, which saves running a separate recessed contact and a second pair of wires. Add the Bond Alert Status option if the panel also needs to know the lock is bonded, since door closed and lock bonded are two different states and DPS only answers the first.
12) Can the Schlage GF3000 be swapped in where an SDC 1561S shear lock is installed?
Not without work on the opening. The Schlage GF3000 is a mortise mounted shear lock, so it sits inside a pocket machined into the frame or door. The SDC HiShear 1561S is surface mounted to the push side of an out-swing door and lands on the face of the frame. The two are both shear locks and both heavy duty, but the prep is different, so treat a change between them as a new installation rather than a like-for-like replacement.
13) Which shear lock should I specify when the frame cannot be machined?
Specify the SDC HiShear 1561S. It is surface mounted to the push side of the out-swing door and carries 2,000 lbs of holding force, with adjustable vertical and lateral alignment to take up door gaps and warped or misaligned doors. The Schlage GF3000 shear lock is mortise mounted, which requires a machined pocket in the opening, so it is the wrong choice where the frame has to stay intact.
14) Are shear locks noisy when they release?
Shear locks are known for a hard clack on lock and release because metal tabs are engaging. The 1561S has integrated noise dampeners that cut that noise compared to other shear locks. It is worth weighing on a hospital corridor, a library, or a hotel back-of-house door where a door cycling all day sits next to occupied space.
How fast can I get the SDC 1561SV 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 SDC 1561SV come with a warranty?
Absolutely. The SDC 1561SV 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 SDC 1561SV?
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 SDC 1561SV from ZenSupply?
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