ACSI 1550K-MDV Electric Motor ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$700.00
$428.08
ACSI ACSI 1550K-MDV Electric Motor Latch Retraction Modification/Kit for Von Duprin 33A/35A, 98/99 1550K-MDV

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

(No reviews yet) Write a Review

Model: 1550K-MDV
From the 1500 Series Collection

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

$700.00
$428.08
Adding to cart… The item has been added
This item qualifies for Free Shipping!
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

ACSI 1550K-MDV ELECTRIC MOTOR LATCH RETRACTION MODIFICATION / KIT

for Von Duprin 33A/35A, 98/99

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-MDV – Von 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.

Product Specs

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

ACSI 1550K-MDV – Frequently Asked Questions

1) What is the ACSI 1550K-MDV modification kit used for?
This kit converts Von Duprin 33A/35A panic hardware to Motor Driven auxiliary latch retraction. It enables remote retraction of the auxiliary latch for electric access control integration.
2) Which Von Duprin models are compatible with this kit?
Compatible with Von Duprin 33A and 35A series panic hardware. Verify your device model before ordering. Not compatible with other Von Duprin series.
3) Does this kit work with both left and right hand doors?
Yes, the MDV kit is compatible with both left hand and right hand panic hardware configurations. Hand orientation is determined by the original Von Duprin device installation.
4) What voltage does the motor operate on?
Check manufacturer specifications for voltage requirements. Typically operates on low voltage DC power. Ensure your access control system provides compatible voltage and current.
5) Can this be used on fire-rated door assemblies?
Verify fire rating compatibility with manufacturer documentation. Installation must maintain fire rating of door assembly. Consult local fire marshal for approval if required.
6) What components are included in the modification kit?
Kit includes motor assembly, wiring harness, mounting hardware, and installation instructions. All necessary components for converting standard panic hardware to motor driven operation.
7) How is the motor wired to the access control system?
Motor connects via low voltage wiring to access control panel. Use manufacturer wiring diagram for proper connections. Install per electrical codes and manufacturer specifications.
8) Does installation require special tools?
Standard locksmith tools required. Installation involves disassembly of panic device for motor integration. Follow manufacturer template and instructions carefully.
9) How do I maintain the motor latch retraction system?
Test motor operation monthly. Check for smooth latch retraction and proper return. Lubricate per manufacturer schedule. Inspect wiring connections annually.
10) Are there other ACSI modification kits available?
ACSI offers various modification kits for different panic hardware models. Browse our door hardware section for compatible options and accessories.
11) What happens if the motor fails?
Panic hardware continues to operate normally for egress. Motor failure only affects remote latch retraction function. Manual operation remains unaffected for life safety.
How fast can I get the ACSI 1550K-MDV delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ACSI 1550K-MDV come with a warranty?
Absolutely. The ACSI 1550K-MDV is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ACSI 1550K-MDV?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the ACSI 1550K-MDV from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!