Von Duprin 114317-00 QEL (Electric Latch Retraction) Modular Conversion Kit

The Von Duprin 114317-00 is a Quiet Electric Latch Retraction (QEL) modular conversion kit designed to upgrade compatible 33A/35A and 98/99 Series exit devices with motor-driven electronic latch retraction. Compatible with both 3-foot and 4-foot exit devices, the kit provides quiet, access-controlled unlocking without replacing the complete exit device or its existing baseplate. Operating on 24VDC with approximately 1.0A inrush and 0.14A holding current, the retrofit mechanism supports momentary or sustained latch retraction while preserving mechanical egress.

Von Duprin 114317-00 QEL Modular Electric Latch Retraction Conversion Kit

The Von Duprin 114317-00 Quiet Electric Latch Retraction (QEL) Modular Conversion Kit provides a factory-designed retrofit solution for converting compatible Von Duprin 33A, 35A, 98, and 99 Series mechanical exit devices to electrically controlled latch retraction. Designed for commercial and institutional access control installations, the kit incorporates a motor-driven latch retraction assembly that enables authorized users to unlock an entrance electronically while maintaining the exit device's mechanical egress function. Its modular construction allows the original exit device and compatible baseplate components to remain in service, eliminating the need for complete panic hardware replacement. The 114317-00 accommodates both 3-foot and 4-foot exit devices, simplifying selection and inventory management for retrofit applications.

The QEL motorized latch retraction mechanism operates on 24VDC power and requires approximately 1.0 amp of inrush current for 0.5 seconds and 0.14 amp of continuous holding current. The energy-efficient motor retracts the latchbolt when activated by a compatible access control panel, remote switching device, or electronic door control system. It supports momentary latch retraction for individual access events and sustained latch retraction for scheduled unlocking periods, allowing doors to remain unlatched during authorized access hours. Compared with traditional solenoid-operated electric latch retraction, the QEL mechanism provides quieter electronic operation and reduced sustained current requirements. Integrated control electronics include installation and troubleshooting diagnostics to assist technicians during commissioning and service.

The Von Duprin 114317-00 modular conversion kit is compatible with standard 33A/35A and 98/99 Series mechanical exit devices, including supported rim, mortise, and vertical rod configurations. The kit installs within the existing exit device mechanism rather than replacing the complete baseplate assembly. Manufacturer installation procedures cover removal of the mechanical components, installation of the motor assembly and linkage, routing of electrical connections, and verification of latch retraction operation. The standard 114317-00 configuration does not include hex dogging or an Allegion Connect connector harness; alternative conversion kits are available when these options are required. Von Duprin recommends the modular conversion kit for most mechanical-to-QEL applications, while baseplate conversion kits such as the 958003-00 are primarily recommended when replacing older solenoid-driven Electric Latch Retraction (EL) mechanisms.

The 114317-00 QEL conversion kit supports electronic access control in hospitals, schools, libraries, office buildings, museums, theaters, and other commercial facilities where reduced operating noise and dependable exit hardware performance are important. The conversion mechanism can be integrated with card readers, electronic access controllers, building access schedules, and compatible automatic door operators when the complete system is appropriately designed. A compatible 24VDC power supply, power transfer hardware, and external control equipment are required and are not included in the standard kit. Von Duprin provides manufacturer instructions for approved conversions of compatible panic and fire exit hardware, with installation requirements that vary by device configuration and fire rating. For fire-rated openings, the QEL electrical interface must be connected to the building fire alarm system in accordance with the manufacturer's instructions. The 114317-00 offers a factory-engineered method of modernizing existing Von Duprin exit devices with quiet, electronically controlled latch retraction while retaining their mechanical exit functionality.