ACSI 1550K-MDV Electric Motor ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$700.00
$378.17

ACSI 1550K-MDV Electric Motor Latch Retraction Kit for Von Duprin 33A, 35A, 98,99

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Model: 1550K-MDV
From the Exit Control Locks Collection

In Stock (leaves warehouse same day if ordered before 3pm ET)

$700.00
$378.17
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**ACSI 1550K-MDV ELECTRIC MOTOR LATCH RETRACTION MODIFICATION / KIT

for Von Duprin 33A/35A, 98/99 – OVERVIEW**

The ACSI 1550K-MDV is a high-performance electric motor latch retraction kit designed for Von Duprin 33A/35A and 98/99 Series exit devices. Part of the renowned ACSI 1550K series, this motorized solution enables simultaneous latch retraction and dogging, delivering smooth, quiet, and low-power operation for commercial and institutional doors.

Whether you’re specifying a 1550K MDV modification for new construction or retrofitting existing hardware, this kit provides UL-certified reliability with easy integration into modern access control systems. ACSI provides all modifications UL Listed, along with wiring diagrams and technical support.

Buy the ACSI 1550K-MDV Electric Motor Latch Retraction Kit for seamless compatibility with Von Duprin 33/35 and 98/99 exit devices—backed by dependable field or factory installation options.


Key Product Features:

  • Simultaneous electric latch retraction and dogging (push bar depressed)

  • UL Listed for both panic and fire-rated exit devices

  • Compatible with mortise, rim, concealed, and surface vertical rod exit hardware

  • Field or factory installed

  • Quiet motor operation

  • Continuous duty rated

  • Low power consumption (24VDC)

  • Non-polarized leads, on-board diagnostic LEDs, and automatic retry

  • Interfaces with life-safety and alarm systems

  • Recommended with ACSI Series 1400 power supplies


Part of the ACSI 1550K Modification Kit Collection:

  • 1550K-MDVVon Duprin 33A/35A, 98/99

  • 1550K-MDV22 – Von Duprin 22

  • 1550K-MDC – Corbin Russwin ED4000/5000, Yale 7000

  • 1550K-MDD – Dorma 9000

  • 1550K-MDT / MDS / MDP / MDF / MDO / MDH / MDX – For Hager, Sargent, Precision, Falcon, Design Hardware, Dorex

  • 1550K-VD – Solenoid Latch Kit for Von Duprin 33/35, 98/99

The 1550K MDV is the go-to solution when reliable, electrified performance is needed for Von Duprin exit devices—delivering enhanced security, access control, and code compliance.

RESOURCES & DOWNLOADS

ACSI 1550K-MDV Electric Motor Latch Retraction Modification/Kit for Von Duprin 33A/35A, 98/99 Catalog

Manufacturer Resources

Product Specs

Category:
Electronic Access Controls
Subcategory:
Electric Motor Latch Retraction
Series:
1500 Series
Collection:
Exit Control Locks
Product Type:
Electric Motor Latch Retraction Kits
Compatibilty:
Von Duprin 33A/35A, 98/99
Function:
Part/Component
Warranty:
1 Year
Product Group:
Electronic Access Controls
Product Subgroup:
Parts and Accessories
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Function:
Part/Component
Electric Option:
Motorized Latch Retraction
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Tags:
1550k mdv, 1550k