Securitron M32B Magnalock - Magnetic Bond Sensor (MBS) - 600 lbs

The Securitron M32B is the MBS-equipped variant of the M32 Series Magnalock, delivering 600 lbs (272 kg) of electromagnetic hold force for indoor and outdoor traffic control applications. The "B" designation means Magnetic Bond Sensor is built into the housing, so the lock notifies your access control panel or alarm system when the armature plate is properly bonded to the magnet (not just "power is on," but "the door is actually locked"). Direct-mount to door frame, fully sealed and conformal coated, IP66 dust-tight and water-jet rated, operates from -40 to +140 F. Automatic dual voltage 12/24 VDC with no field adjustment. Patented instant-release circuit means zero residual magnetism when power drops. Backed by Securitron's MagnaCare Lifetime Replacement No-Fault Warranty. 

What Is the Securitron M32B Magnalock

Securitron invented the modern Magnalock category in the late 1970s, and the M32 Series is the brand's flagship line for applications that sit between interior-only and extreme-environment. "Magnalock" is Securitron's trademarked term for their electromagnetic locks (all Securitron maglocks are Magnalocks, but not all maglocks are Magnalocks). Securitron is now part of ASSA ABLOY, alongside Corbin Russwin, Yale, Sargent, and Medeco, which means M32 Series products integrate with the broader ASSA ABLOY access control ecosystem including HID, Aperio, and third-party head-ends from Lenel, Software House C-Cure, S2, Genetec, Avigilon, and Honeywell. The M32B specifically is the MBS-equipped base model within the M32 Series, positioned for commercial perimeter doors, storage areas, hospital corridors, government facility checkpoints, office tower lobbies, outdoor gate applications, and any 600-lb opening where bond monitoring matters to the access control head-end.

M32B Specifications

Full specs for the spec writer or integrator:

• Holding force: 600 lbs (272 kg)

• Magnalock dimensions: 8" L × 1-5/8" D × 1-7/8" H

• Strike (armature) dimensions: 6-1/4" L × 1/2" D × 1-5/8" H

• Mount: direct mount to door frame (not bracket mounted)

• Input voltage: automatic dual voltage, 12 VDC / 24 VDC, no field adjustment

• Current draw: 300 mA at 12 VDC, 150 mA at 24 VDC

• Operating temperature: -40 to +140 F (-40 to +60 C)

• Cable: sealed 10 ft jacketed stranded conductor (pre-installed)

• Weather rating: fully sealed and conformal coated, NEMA 4X, IEC IP66

• Construction: all ferrous metal surfaces plated to MIL specification

• Release circuit: patented instant release, no residual magnetism when de-energized

• Noise suppression: no interference with sensitive electronics (important for data centers and IT rooms)

• Finish (stock): US32D/630 Satin Stainless Steel

• Dress cover options (sold separately): CL Clear Anodized, BK Black Anodized, US32/629 Polished Stainless, US03/605 Polished Brass

• Shipping weight: 6 lbs

• Warranty: MagnaCare Lifetime Replacement No-Fault Warranty

• SKU: M32B

Why the MBS Matters and What M32 Variants Exist

Magnetic Bond Sensor (MBS) is the reason to buy the M32B instead of the base M32. MBS is a physical sensor built into the magnet housing that detects when the armature plate is properly attached and holding the door closed. It reports bonded/not-bonded status to your access control panel via a dedicated output. Without MBS, the panel can only report "power on" or "power off," which doesn't catch failure modes like a shim between the magnet and armature (a common attack on uninstrumented maglocks) or a misaligned armature that isn't actually holding the door. With MBS, any attempt to defeat the lock triggers a bond failure alarm at the head-end. Within the M32 Series family, the base M32 is 600 lb hold with no monitoring, the M32B (this product) adds MBS, the M32BM adds additional monitoring features, and variants like M32DL add DPS and LED indicators. For higher hold force, step up to the Securitron M62 Series at 1,200 lbs or the Securitron DM62 double-magnet version. For challenging outdoor environments beyond what IP66 handles, the M82B Series is the extreme-weather option. For bracket-mounted interior-only applications where direct mount doesn't work, the M38 ($410.89) at the same 600 lb hold is the interior equivalent, with M38D adding DPS and M38DL adding both DPS and LED.

Certifications and Code Compliance

The M32B's full certification list is unusually comprehensive and answers every major compliance question a spec writer or AHJ reviewer asks:

• UL 10C Listed (fire door rated)

• CAN4-S104 Listed (Canadian fire door)

• CAN/ULC-S533 Listed (Canadian electromagnetic lock)

• ANSI/UL 294 Listed (access control system units, the key standard for commercial access control)

• CSA C22.2 No. 205 Listed (Canadian signal equipment)

• ANSI/BHMA 156.23 Grade 1, E08501-500 (Grade 1 electromagnetic lock)

• NFPA 101 compliant (Life Safety Code)

• CSFM Approved (California State Fire Marshal)

• MEA Approved (Materials and Equipment Acceptance, City of New York)

• CE: EN 50091-1, EN 61000-6-2 approved (European compliance)

• NEMA 4X (indoor/outdoor enclosure rating, corrosion resistant)

• IEC IP66 (dust-tight and water jets from any direction)

Applications and Mounting

The direct-mount configuration means the M32B attaches to the door frame with steel machine screws into blind finishing nuts via the internal wire access chamber. Most installations use the included hardware for standard frame applications. For glass doors, specify the HEB-3G Glass Door Header Extension Bracket. For inswinging door applications that need Z-bracket mounting, specify ZA-32/62CL Clear Anodized, ZA-32/62SS Satin Stainless, or ZA-32/62BK Black Anodized. For non-metal frames (concrete, wood, masonry), use the CWB-32CL Concrete/Wood Bracket. For aesthetic installations, five dress covers match most commercial décor: DC-32CL Clear, DC-32BK Black, DC-32SP Stainless Polished, DC-32BP Brass Polished, or the double-door DDC-32CL / DDC-32BK versions.