Accentra 4780LN Monroe Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$729.00
$648.29
Yale Commercial Yale 4780LN Monroe Grade 1 Fail Safe No Override Electrified Cylindrical Lever Lock YAL-MO4780LN

Accentra 4780LN Monroe Grade 1 Fail Safe No Override Electrified Cylindrical Lever Lock

(No reviews yet) Write a Review

Model: MO-4780LN-626 12V
Selected Finish is

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

$729.00
$648.29
Adding to cart… The item has been added
Free Shipping on orders over $199
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

Yale 4700LN Series Lever Locks

Yale 4700LN cylindrical locks are the ideal choice for a wide variety of commercial applications where consistent quality, ease of use and installation are required at an economical price. The4700LN series is certified to ANSI/BHMA Grade 1 standards and is UL fire-listed for all functions ensuring reliability and peace of mind.

 

FEATURES & BENEFITS

  • ANSI/BHMA: A156.2, Series 4000 Grade 1
  • UL-cUL: UL-cUL fire-rated up to 3 hours
  • Windstorm: 4700LN Certified (refer to local codes)
  • Mechanism: Heavy-gauge steel, die-cast, zinc-plated, chromated
  • Backset: 2-3/4" standard
  • Latchbolt: 1/2" stainless steel throw standard
  • Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
  • Door Thickness: 4700LN adjustable from 1-3/8" to 1-3/4". 4700 adjustable from 1-3/4" to 2"
  • Fronts: 2-1/4" x 1-1/8" beveled standard; flat fronts available to order
  • Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin not available.
  • Reversibility: Non-handed
  • Strikes: ANSI strike 4-7/8" x 1-1/4" x 1-1/4" lip to center supplied standard. Optional T-strike available to order for 4700LN.
  • Finishes: 4700LN available in 7 finishes, 4700 available in satin stainless steel (630) only.
  • Warranty: 5-year mechanical

 

CERTIFICATIONS

  • ANSI/BHMA Grade 1 certified
  • ADA compliant for ease of accessiblity

 

DOWNLOAD & RESOURCES

Product Specs

Series:
4700 Series
Subcategory:
Cylindrical
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Cylindrical
Handle Type:
Lever
Product Model:
YAL-4780LN
Lever Design Name:
Monroe Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Accentra MO-4780LN-626 12V – Frequently Asked Questions

1) What does fail safe mean on the Accentra 4780LN electrified lever lock, and what happens in a power outage?
Fail safe means the outside lever is unlocked when power is removed. The 4780LN is an electrified cylindrical lock, so cutting or losing the 12VDC or 24VDC supply leaves the opening free for entry from both sides. That is the configuration used on stair and egress doors that must release on a fire alarm. If you need the door to stay secure when power drops, a fail safe lock is the wrong choice and you want a fail secure electrified lock instead.
2) Will the Yale/Accentra 4780LN Monroe lever fit a 1-3/8 inch door?
Yes. The 4700LN chassis is adjustable from 1-3/8 inch to 1-3/4 inch, so it covers both the standard 1-3/4 inch commercial door and older 1-3/8 inch interior doors. If your door runs 1-3/4 inch to 2 inch, that is the plain 4700 chassis range, not the LN.
3) What backset and latch throw does the 4780LN use, and will it drop into my existing strike?
Standard backset is 2-3/4 inches with a 1/2 inch stainless steel latchbolt throw, and it ships with the ANSI strike at 4-7/8 x 1-1/4 inches with 1-1/4 inch lip to center. If your frame is already prepped for that ANSI strike and a 2-3/4 inch backset bore, the 4780LN drops in. A T-strike is available to order on the 4700LN if your frame is cut for one.
4) Is the 4780LN fire rated for a labeled door?
The 4700LN series is UL-cUL fire listed for all functions, rated up to 3 hours, and certified to ANSI/BHMA A156.2 Series 4000 Grade 1. It is also ADA compliant and the 4700LN carries windstorm certification, subject to local code.
5) What else could I use instead of the Accentra 4780LN electrified lever lock?
The closest cross-brand equivalent we carry is the Corbin Russwin CL33903, a Grade 1 fail safe electrified cylindrical lever lock in 12VAC/DC with the NZ lever and D rose. Note its door thickness range is 1-3/4 inch to 2 inch, so on a 1-3/8 inch door the Accentra 4700LN chassis is the one that fits. The CL33903 is also offered in a keyed version if you want a cylinder on the opening.
6) What is the closest equivalent to the Accentra 4780LN Monroe electrified fail safe lever from another manufacturer?
The Corbin Russwin CL33903 is the nearest match: it is a Grade 1 fail safe electrified cylindrical lever lock offered in a 12VAC/DC version, the same fail safe electrified cylindrical format as the Accentra 4780LN Monroe Grade 1 electrified lever. The main difference to check is door thickness - the CL33903 is listed for 1-3/4 inch to 2 inch doors, while the 4700LN body is adjustable from 1-3/8 inch to 1-3/4 inch. The 4780LN is ordered in 12VDC or 24VDC, so confirm the supply voltage on the access control panel before swapping either way.
7) If the opening does not need electrified access control, what mechanical Grade 1 cylindrical lever should be used instead of the 4780LN?
Where the door is controlled by key or free egress alone rather than by a power supply, a mechanical Grade 1 cylindrical lever covers it. The Dexter C1000 classroom lever is Grade 1 and keyed for 1-3/8 inch to 1-3/4 inch doors, the Falcon K101 is a Grade 1 fire rated passage lock for 1-3/8 inch to 2-1/4 inch doors, and the Corbin Russwin CL3110 is a Grade 1 fire rated passage/closet lever for 1-3/4 inch to 2 inch doors. The Accentra 4780LN Monroe is the choice only when the lock must be released electrically at 12VDC or 24VDC.
8) The doors are 2 inches thick - what cylindrical lever works if the 4780LN body does not reach?
The 4700LN body adjusts from 1-3/8 inch to 1-3/4 inch, so for a full 2 inch door look to a lock rated through that range. The Corbin Russwin CL33903 fail safe electrified lever is listed for 1-3/4 inch to 2 inch doors, the Corbin Russwin CL3110 Grade 1 passage lock covers 1-3/4 inch to 2 inch, and the Falcon K101 Grade 1 passage lock covers 1-3/8 inch to 2-1/4 inch. Of those, the CL33903 is the one that keeps the electrified fail safe function.
9) Do I need to specify handing for the Monroe electrified lever lock?
No handing to specify. The 4700LN series is non-handed and reversible, so one part number covers left and right hand openings. You do have to pick the finish and the operating voltage, 12VDC or 24VDC, since the coil is voltage specific.
10) What does no override mean on this 4780LN, and is there a key cylinder?
No override means there is no mechanical key or thumbturn to defeat the electrical control. Access is governed entirely by the access control system feeding the lock, so the outside lever follows power state and nothing else. If you want a keyed override on the same opening, you need a different 4700LN electrified variant.
11) What finishes does the Accentra 4780LN Monroe lever come in?
Eight finish choices: 605 bright brass, 606 satin brass, 612 satin bronze, 613E dark oxidized satin bronze equivalent, 625 bright chrome, 626 satin chrome, BSP black suede powder coat and WSP white suede powder coat. All eight are offered in both 12VDC and 24VDC. If you are matching existing commercial openings, 626 satin chrome is the usual building standard.
12) I only need a non-electrified Grade 1 lever on the rest of the doors. What matches?
For the openings that do not need access control, Grade 1 mechanical cylindrical levers we stock include the Corbin Russwin CL3110 passage (vandal resistant, fire rated, 1-3/4 to 2 inch doors), the Falcon K101 passage (1-3/8 to 2-1/4 inch, fire rated) and the Dexter C1000 series in classroom, classroom security, asylum and passage functions. The Dexter classroom and passage versions cover 1-3/8 to 1-3/4 inch doors, the same range as the 4700LN chassis.
13) Is the 4780LN chassis tough enough for a high traffic entrance or stairwell?
It is built for that. The 4700LN mechanism is heavy-gauge steel, die-cast, zinc-plated and chromated, and the series is certified Grade 1 under ANSI/BHMA A156.2 Series 4000, which is the heavy duty commercial tier. Grade 2 and Grade 3 levers, common on lighter Bravura, Callan and Kwikset lines, are cycle rated well below that.
14) Is a Grade 2 lever such as the Hager 2580 or Cal-Royal AG05 an acceptable substitute for the 4780LN on a high traffic opening?
They are a different certification level and a different operating type. The Accentra 4780LN Monroe is ANSI/BHMA Grade 1 and electrified; the Hager 2580 Withnell storeroom lever and the Cal-Royal AG05 storeroom lever are both Grade 2 mechanical storeroom locks for 1-3/8 inch to 2 inch and 1-3/8 inch to 1-3/4 inch doors respectively. If the drawing calls out Grade 1 or the opening is on an access control circuit, neither Grade 2 storeroom lock meets it.
15) What front does the 4780LN ship with, and can I get a flat front?
A 2-1/4 x 1-1/8 inch beveled front is standard. Flat fronts are available to order if your door edge prep calls for one.
How fast can I get the Accentra MO-4780LN-626 12V 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 Accentra MO-4780LN-626 12V come with a warranty?
Absolutely. The Accentra MO-4780LN-626 12V 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 Accentra MO-4780LN-626 12V?
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 Accentra MO-4780LN-626 12V 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.
!