ACSI 1550K-MDY Motorized Latch...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$780.00
$494.28
ACSI 1550K-MDY Motorized Latch Retraction/Dogging Kits for Von Duprin 33A/35A, 98/99 Series Exit Devices

ACSI 1550K-MDY Motorized Latch Retraction/Dogging Kits for Von Duprin 33A/35A, 98/99 Series Exit Devices

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Model: 1550K-MDY
From the 1500 Series Collection

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

$780.00
$494.28
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ACSI 1550K-MDY Motorized Latch Retraction/Dogging Kits for Von Duprin 33A/35A, 98/99 Series Exit Devices

  • 1550K-MDH Electric Motor Latch Retraction Modification/Kit for Design Hardware 1000. Motorized Latch Retraction/Dogging Kits for Design Hardware 1000 Series Exit Devices.
  • You supply the exit device and ACSI supplies high quality UL Listed modifications to a wide range of manufacturers’ exit devices. ACSI engineers and technicians are available to provide system design, wiring diagrams, and a variety of technical services.
  • Buy the ACSI 1550K-MDH Electric Motor Latch Retraction Modification/Kit for Design Hardware 1000 for easy installation and dependable door hardware solution.

ACSI 1550K-MDY Motorized Latch Retraction/Dogging Kits for Von Duprin 33A/35A, 98/99 Series Exit Devices

  • Simultaneous electric latch retraction and dogging (push bar depressed)
  • UL Listed for both panic and fire exit hardware
  • Available for mortise, rim, concealed and surface vertical rod exit devices
  • Field or factory installed
  • Quiet operation
  • Continuous duty rated
  • Low power consumption
  • 24VDC operation
    -ACSI Series 1400 power supplies recommended
  • Interface with life-safety systems
  • Non-polarized leads
  • On-board diagnostic LEDs
  • Automatic retry

ACSI ELECTRIC MOTOR LATCH RETRACTION MODIFICATION/KIT COLLECTION

  • ACSI 1550K-MDV Electric Motor Latch Retraction Modification/Kit for Von Duprin 33A/35A, 98/99
    ACSI 1550K-MDV22 Electric Motor Latch Retraction Modification/Kit for Von Duprin 22
    ACSI 1550K-MDC Electric Motor Latch Retraction Modification/Kit for Corbin Russwin ED4000, ED5000; Yale 7000
    ACSI 1550K-MDD Electric Motor Latch Retraction Modification/Kit for Dorma 9000
    ACSI 1550K-MDT Electric Motor Latch Retraction Modification/Kit for Hager 4500, 4600; PDQ 6200; Stanley Commercial Hardware QED100, QED200, QED300
    ACSI 1550K-MDS Electric Motor Latch Retraction Modification/Kit for Sargent 80; Arrow 1000, 3000, 4000
    ACSI 1550K-MDP Electric Motor Latch Retraction Modification/Kit for Precision 2000, 5000
    ACSI 1550K-MDF Electric Motor Latch Retraction Modification/Kit for Falcon 24, 25
    ACSI 1550K-MDH Electric Motor Latch Retraction Modification/Kit for Design Hardware 1000
    ACSI 1550K-MDX Electric Motor Latch Retraction Modification/Kit for Dorex 9500
    ACSI 1550K-MDO Electric Motor Latch Retraction Modification/Kit for Falcon 1690, 1790
    ACSI 1550K-VD Electric Solenoid Latch Retraction Kit for Von Duprin 33/35 and 98/99 Series Exit Devices

Product Specs

Subcategory:
Electric Motor Latch Retraction
Series:
1500 Series
Collection:
1500 Series
Product Type:
Electric Motor Latch Retraction Kits
Compatibility:
Design Hardware 1000
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
Product Function:
Part/Component
Electrical Configuration:
Motorized Latch Retraction
Product Category:
Electronic Access Controls
Department:
Door Hardware

ACSI 1550K-MDY – Frequently Asked Questions

1) What does an ACSI 1550K motorized latch retraction kit actually do to an exit device?
It converts a mechanical exit device into an electrically controlled one. The ACSI 1550K motor kit pulls the latch back and holds the device dogged at the same time, with the push bar depressed, so the door can be pushed or pulled freely while power is applied. Drop the signal and the latch returns to normal panic operation. That is what lets an exit device sit on an access control system, a card reader, or an automatic operator without anyone touching the crossbar.
2) What voltage and power supply does the ACSI 1550K latch retraction kit need?
The kit runs on 24VDC and ACSI recommends its own Series 1400 power supplies to feed it. Current draw is low and the motor is continuous duty rated, so it can stay energized through a full unlocked schedule without a duty cycle limit. The leads are non-polarized, which takes the guesswork out of the field wiring.
3) Can a motorized latch retraction kit go on a fire rated exit device, or does that void the label?
The ACSI 1550K motor kit is UL Listed for both panic and fire exit hardware, so it is a listed modification rather than a field alteration that kills the label. On a fire opening the device still latches when power drops, which is the behavior a fire door needs. Note the distinction that matters on a fire door: this is electric latch retraction, not mechanical dogging, and fire exit hardware is never mechanically dogged.
4) Does ACSI motorized latch retraction work on vertical rod and mortise exit devices, or only rim devices?
All four chassis types are covered. ACSI builds the 1550K motor latch retraction modification for mortise, rim, concealed vertical rod, and surface vertical rod exit devices. On a pair of doors with surface or concealed rods, that means both the top and bottom latch points retract together, so the pair opens free without a mullion in the way.
5) Does the ACSI 1550K come with an exit device, or do I supply my own?
You supply the exit device. ACSI does not sell the panic hardware here; the 1550K is a modification kit that gets installed into a device you already own or are buying separately, and ACSI's part of the order is the UL Listed motor retraction module and its installation. Budget the job as two lines: the exit device, and the electrification kit that goes into it. It is a commercial-duty component, not a residential one.
6) Is there one ACSI motor latch retraction kit that fits every brand of exit device?
No. ACSI builds a different 1550K variant per exit device family, and ordering the wrong suffix gets you a kit that will not mount. The range includes 1550K-MDV for Von Duprin 33A/35A and 98/99, 1550K-MDV22 for Von Duprin 22, 1550K-MDC for Corbin Russwin ED4000 and ED5000 plus Yale 7000, 1550K-MDS for Sargent 80 and Arrow 1000, 3000 and 4000, 1550K-MDT for Hager 4500 and 4600, PDQ 6200 and Stanley QED100, QED200 and QED300, 1550K-MDF for Falcon 24 and 25, 1550K-MDO for Falcon 1690 and 1790, 1550K-MDP for Precision 2000 and 5000, 1550K-MDD for Dorma 9000, 1550K-MDX for Dorex 9500, and 1550K-MDH for Design Hardware 1000. Identify the device on the door first, then pick the suffix.
7) Do I have to send my exit device in, or can the ACSI 1550K kit be installed in the field?
Either way works. The 1550K motor kit is field or factory installed, so an integrator can retrofit a device that is already hung on the door, or the modification can be done to the device before it ships. ACSI's engineers and technicians provide system design and wiring diagrams to support the install.
8) Will an electrified exit device be loud enough to bother a hotel corridor or a library?
Quiet operation is one of the reasons to pick a motor kit over a solenoid. A solenoid latch retraction unit snaps in with an audible slam and pulls significant inrush current; the ACSI 1550K motor drive moves the latch under motor control instead, and it is rated for continuous duty at low power draw. In occupied corridors, patient areas, and guest floors that difference is the whole decision.
9) How does an ACSI 1550K kit tie into the fire alarm and access control system?
The kit is built to interface with life-safety systems, so the retraction signal can be dropped by the fire alarm relay and the device relatches on alarm. On the access control side it takes a 24VDC input, so any relay output from a controller, card reader interface, or push-button drives it. On-board diagnostic LEDs on the module show what the unit is seeing, and an automatic retry feature re-attempts retraction rather than sitting stalled if the latch is bound under load.
10) Should I use a motor latch retraction kit or a solenoid kit on a Von Duprin 33/35 or 98/99?
Both exist for that hardware. ACSI's 1550K-VD is the electric solenoid latch retraction kit for Von Duprin 33/35 and 98/99, while the 1550K motor kits give quiet operation, continuous duty rating, low power consumption, diagnostic LEDs, and automatic retry. Pick the solenoid when the opening is remote from occupants and the existing power supply is sized for it; pick the motor version for occupied space, for openings that stay retracted on a long unlock schedule, and where you want the module to report its own state.
How fast can I get the ACSI 1550K-MDY 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-MDY come with a warranty?
Absolutely. The ACSI 1550K-MDY 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-MDY?
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-MDY 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.
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