Von Duprin 6400 Series Electric Strike

The Von Duprin 6400-US32D is a Grade 1 modular electric strike with a satin stainless steel (630/US32D) finish, designed for compatible mortise and cylindrical locksets. Featuring 1,500 lbs of static holding strength, 70 ft-lbs of dynamic strength, and field-selectable 12/24V AC/DC operation, it provides fail-secure electronic access control for commercial single doors. The strike accommodates latchbolts up to 3/4 inch, includes centerline and offset faceplates, and features adjustable keeper components for misaligned openings. It is UL 10C three-hour fire-rated, UL 1034 listed, and UL 294 listed for approved installations.

Von Duprin 6400-US32D Grade 1 Modular Fire-Rated Electric Strike

The Von Duprin 6400-US32D Modular Electric Strike is a heavy-duty electronic locking device engineered for commercial single-door openings equipped with compatible mortise or cylindrical locksets. Manufactured by Von Duprin, an Allegion brand, the 6400 Series features a satin stainless steel (BHMA 630/US32D) construction and a modular, field-configurable keeper assembly designed to accommodate different latchbolt positions and lock functions. The strike allows an access control system to release the mechanical latch without requiring the user to operate the exterior lock trim. Its adaptable design supports installation in hollow metal, aluminum, and wood door frames, making it suitable for commercial offices, educational facilities, healthcare buildings, institutional properties, and other access-controlled entrances requiring secure electronic locking and reliable mechanical egress.

The 6400-US32D incorporates a heavy-duty stainless steel construction rated for 1,500 pounds of static holding strength and 70 foot-pounds of dynamic strength, meeting ANSI/BHMA A156.31 Grade 1 performance requirements. Its internal solenoid operates on 12VDC at 375mA or 24VDC at 190mA for continuous-duty applications. The strike also supports 12/24VAC intermittent-duty operation with current consumption ranging from 280mA to 565mA, depending on the selected voltage. Electrical configuration is established using the appropriate supplied plug-in wiring harness, allowing installers to select the required operating voltage without replacing the strike assembly. The standard 6400 Series uses a fail-secure operating mechanism, meaning the keeper remains locked when electrical power is removed and releases upon an authorized electrical activation. Its non-handed design supports installation on either left- or right-hand door configurations.

Designed for mortise and cylindrical lock compatibility, the Von Duprin 6400-US32D features a modular keeper system with repositionable components that accommodate different latchbolt and deadlatch arrangements. Installers can position the deadbolt keeper, deadbolt plug, or deadlatch ramp within the strike's 3-1/8-inch vertical opening to match the installed lockset's mechanical configuration. The assembly also provides approximately 1/8 inch of horizontal adjustment, helping compensate for minor door and frame misalignment or tight mechanical clearances. The strike supports compatible latchbolts with up to a 3/4-inch throw and can accommodate a deadbolt with up to a 1-inch throw in a night-latch configuration; however, the deadbolt is not electrically released. Two standard 4-7/8-inch faceplates, one for centerline installations and one for offset latch configurations, are included to simplify adaptation to different commercial lock preparations.

The Von Duprin 6400-US32D is designed for integration with electronic access control systems using compatible card readers, keypads, security controllers, remote release switches, and regulated locking hardware power supplies. Its compact 1-3/4-inch backbox depth supports installation in properly prepared commercial door frames, while the supplied mounting tabs, adjustment shims, trim filler plate, self-adhesive cutting template, and tamper-resistant mounting screws help simplify field installation. An optional LM6400 plug-in latchbolt monitoring switch provides door-latched status reporting to compatible access control equipment, while optional SO12 and SO24 rectifier kits and an EB entry buzzer extend the available configuration options. The standard strike does not include these separately ordered monitoring and signaling accessories.

The Von Duprin 6400-US32D meets ANSI/BHMA A156.31 Grade 1 requirements and carries manufacturer-documented listings to UL 1034 for burglary-resistant electric locking mechanisms, UL 294 for access control system units, and UL 10C for three-hour fire-rated door assemblies. Its fire rating applies to approved installations using the standard fail-secure configuration. The strike is intended for compatible single-door openings and must be installed in accordance with applicable fire-door listing requirements, electrical specifications, and local building and egress codes. Combining modular latch positioning, dual AC/DC voltage compatibility, stainless steel construction, and high holding strength, the 6400-US32D provides a versatile electric strike solution for commercial access control retrofits and new door security installations.