About this item
The Securitron SAMD is a 1200 lb shear electromagnetic lock with a patented self-aligning mechanism and integrated Door Position Switch (DPS), built for fully concealed installation in wood, steel, aluminum, and Herculite glass doors. It belongs to the Securitron SAM series under Securitron Maglocks & Acc. within Magnetic Locks. Unlike bracket-mounted surface maglocks, the SAMD installs flush inside the door and frame, keeping hardware completely invisible from the corridor while delivering the full 1200 lb holding force in shear orientation.
What is a shear magnalock and how is it different from a standard electromagnetic lock?
A standard electromagnetic lock clamps in tension: the magnet on the frame face pulls the armature plate perpendicularly when energized. A shear magnalock engages differently: the armature slides horizontally into the lock body as the door closes, and the magnetic force resists door opening parallel to the door face rather than against it. This orientation allows fully concealed installation with no hardware visible on either surface. Shear maglocks are the specified choice for frameless glass doors, high-finish wood entrances, aluminum storefronts, and institutional environments where exposed surface hardware is architecturally unacceptable or creates a security vulnerability.
What does the SAM self-aligning mechanism do on the Securitron SAMD?
SAM stands for Self Aligning Magnalock. The mechanism compensates for door misalignment, sag, and seasonal settling by allowing the armature to adjust position as the door closes, so the magnetic surfaces meet correctly even when the door has shifted from its original installation position. Standard shear locks require precise installation alignment and lose holding force progressively as the door settles or warps over time. The SAM mechanism maintains a consistent 1200 lb holding force across the installation's life without realignment service calls, making it particularly valuable on heavy glass doors, high-traffic institutional entrances, and exterior openings subject to thermal movement.
What does the DPS add to the SAMD shear magnalock?
The D in SAMD designates the Door Position Switch. The DPS sends a dry-contact signal to your access-control or alarm system indicating whether the door is physically open or closed, independent of lock state. This enables held-open alarms, door-ajar event logging, and verification that the door has fully closed and seated before the panel re-energizes the magnalock. The base SAM model has no DPS. If your installation requires door-state monitoring at the panel level, specify the SAMD. Neither configuration is field-convertible to the other.
Where can the Securitron SAMD be installed?
The SAMD mounts fully concealed in any position: top of door, hinge side, lock side, or bottom. Compatible door materials are wood, steel, aluminum, and Herculite glass. NEMA 4X and IEC IP66 weatherproof ratings qualify it for exterior vestibules and outdoor-adjacent applications alongside interior use. Operating temperature range is -40 to +140°F. Each lock ships with a sealed 10-foot jacketed conductor for rough-in wiring, and dual voltage (12/24VDC) is automatic with no field adjustment required.
How does the SAMD compared to the Securitron M68D face-mounted magnalock?
The Securitron M68D delivers the same 1200 lb holding force and DPS functionality as the SAMD but in a bracket-mounted surface format for interior applications where visible hardware is acceptable and door alignment is controlled. The SAMD is the correct product when concealment, self-aligning tolerance, outdoor rating, or glass door compatibility is required. If the opening accepts surface-mounted hardware and alignment is consistent, the M68D is the simpler and lower-cost installation.
Specifications
SKU: SAMD. Holding force: 1200 lbs (544 kg). Lock dimensions: 10-7/8"L x 1-3/16"D x 1-1/2"H. Strike dimensions: 10-7/8"L x 1-7/16"D x 1-1/2"H. Current: 320mA at 12VDC; 170mA at 24VDC. Voltage: Auto dual 12/24VDC. Temperature: -40 to +140°F. Finish: US32D/630 Satin Stainless Steel. Weather rating: NEMA 4X, IEC IP66. Certifications: UL 10C, ANSI/UL 294, ANSI/BHMA 156.23 Grade 1, CAN/ULC-S533, CSFM, CE. Warranty: MagnaCare Lifetime Replacement No Fault.
Trusted Since 2001
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