Accentra 5491LN Augusta Grade ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,633.42
$912.80
Accentra 5491LN Augusta Grade 1 Fail Secure Electrified Cylindrical Lever Lock, Request to Exit, 6 Pin LFIC-Yale Large Format IC Prep, Less Core

Accentra 5491LN Augusta Grade 1 Fail Secure Electrified Cylindrical Lever Lock with Request to Exit and LFIC Prep

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Model: AU5491LN-1210 LC 626 REX 24V
From the 5400 Series Collection
Selected Finish is

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

$1,633.42
$912.80
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Accentra 5491LN Augusta Grade 1 Fail Secure Electrified Cylindrical Lever Lock with Request to Exit and LFIC Prep

Heavy-Duty Grade 1 Electrified Cylindrical Lock for Commercial Applications

The Accentra 5491LN Augusta leverages the proven 5400LN series platform to deliver fail secure electrified access control with Grade 1 ANSI/BHMA A156.2 certification. This heavy-duty cylindrical lock accommodates door thicknesses from 1 3/8" to 2 1/4" with standard 2 3/4" backset and operates on 24VDC power. The unit features 6 pin LFIC-Yale Large Format IC preparation (less core) and includes request to exit functionality with UL/cUL fire rating up to 3-hours.

Professional Features & Benefits

  • Heavy duty construction provides strength and durability
  • Free wheeling lever for vandal resistance
  • Adjustable rose support plates
  • Available in 24 functions, including electrified
  • ADA compliant for ease of accessibility
  • UL/cUL fire rated up to 3-hours
  • Rugged construction offers greater reliability and resists wear-and-tear
  • Easy installation with adjustable rose allows for easy adjustment on different door thicknesses
  • Certified grade 1, ANSI/BHMA A156.2
  • Windstorm certified (refer to local codes)
  • 7-year mechanical warranty

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm 24VDC voltage and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including fail-secure operation and request to exit functions per application requirements.
  6. Restore power and test all functions including normal operation, fail secure operation, request to exit functionality, and integration with connected systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Building Security Systems
  • Educational Institution Access Control
  • Healthcare Facility Security
  • Industrial Facility Access Points
  • Government and Municipal Buildings
  • Multi-Tenant Commercial Properties
  • Emergency Exit Compliance Applications

Why Choose Accentra Quality?

Accentra 5491LN cylindrical locks deliver professional-grade reliability with heavy-duty construction featuring free wheeling lever mechanism and wear-resistant chassis plates rated for Grade 1 commercial performance. The 7-year mechanical warranty provides long-term protection and confidence. Engineered for demanding commercial applications where dependable electrified access control and emergency egress compliance are essential.

Product Specs

Series:
5400 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 Attribute:
Cylindrical Locks
Product Model:
YAL-5491LN
Collection:
5400 Series
Lever Design Name:
Augusta Lever
Product Category:
Mechanical Locks
Department:
Door Hardware
Product Function:
Fail Secure
Door Hand Direction:
Field Reversible
Cylinder Classification:
LFIC, Less Core
Product Voltage:
24VDC

Accentra AU5491LN-1210 LC 626 REX 24V – Frequently Asked Questions

1) Will the Accentra 5491LN fit a 1-3/4 inch commercial door?
Yes. The 5491LN Augusta electrified cylindrical lever covers door thicknesses from 1-3/8 inch to 2-1/4 inch, so a standard 1-3/4 inch commercial door sits in the middle of the range. Adjustable rose support plates handle the variation, and the backset is the standard 2-3/4 inch. On thicker doors, such as lead-lined or gasketed leaves up to 2-1/4 inch, it still works without a special chassis.
2) What does fail secure mean on the 5491LN, and what happens when the power drops?
Fail secure means the outside lever stays locked when power is removed. Cut the 24VDC supply to the 5491LN and the door secures itself; you need a key or a valid credential releasing power to get in from the corridor side. The inside lever always retracts the latch for free egress, so losing power never traps anyone. If your application instead requires the opening to unlock on a fire alarm or power loss, you want a fail safe lock, not this one.
3) Does the Accentra 5491LN come with a cylinder?
No core is included. The 5491LN is prepped for a 6-pin Yale large format interchangeable core and ships less core, so you supply the LFIC to match your existing keying system. That is what makes it easy to fold into a facility already keyed on Yale LFIC, but it also means the lock is not operable by key out of the box until a core is installed.
4) What voltage power supply do I need for the 5491LN electrified lever lock?
24VDC. Size the supply for the lock's current draw plus anything else on the same circuit, and run the power through a door loop or electric hinge to the lock. Verify the supply voltage and capacity before you wire it in, because this chassis is a 24VDC unit and not a dual-voltage part.
5) Can I use the Accentra 5491LN on a fire rated door?
Yes. The 5400LN platform is UL/cUL fire rated up to 3 hours, so it can go on a labeled opening including 3-hour rated stair and corridor doors. It is also certified Grade 1 to ANSI/BHMA A156.2 and ADA compliant, which covers the lever operation requirement on accessible routes. Windstorm certification is noted as well, subject to your local code.
6) What is the difference between this and a Corbin Russwin CL33903 electrified lever?
Both are Grade 1 electrified cylindrical levers, but they differ on two things that decide the job. The Accentra 5491LN is fail secure at 24VDC; the Corbin Russwin CL33903 is a fail safe lever at 12VAC/DC, meaning it unlocks when power is removed. Door range differs too: the 5491LN takes 1-3/8 inch to 2-1/4 inch, while the CL33903 is listed for 1-3/4 inch to 2 inch. Pick by what your panel supplies and whether the opening must lock or unlock on power loss.
7) What is the closest electrified cylindrical lever lock to the Accentra 5491LN Augusta from another manufacturer?
The Corbin Russwin CL33903 is the nearest peer. Both are Grade 1 electrified cylindrical lever locks. The difference is the electrical behavior and voltage: the Accentra 5491LN Augusta is a fail secure unit operating on 24VDC, while the CL33903 is a fail safe lever running on 12VAC/DC. Fail secure keeps the outside lever locked when power is removed; fail safe releases it. Confirm which the door's egress and code requirements call for before substituting, since the two are not interchangeable in behavior.
8) What is the request to exit function on this lock actually used for?
The RX switch in the 5491LN signals your access control panel the moment someone turns the inside lever. That tells the system the exit was legitimate so the alarm does not report a forced door, and it can shunt a door contact or release an associated device. Order the lock with the Request to Exit electrical option to get that switch; it is the configuration offered in 626 satin chrome.
9) Do I need to specify handing for the 5491LN Augusta lever?
No separate left hand and right hand part to order. The 5491LN is field reversible, so one lock covers either swing and you set the hand during installation. That matters for a property manager stocking spares: one part number sits on the shelf for every opening in the building rather than two.
10) Is a free wheeling lever worth it on a school or dorm door?
On high-abuse openings, yes. The Augusta lever on the 5491LN free wheels when the lock is secured, so someone hanging on it or kicking it downward spins the lever instead of loading the chassis and latch retractor. Combined with Grade 1 heavy duty construction, that is the reason this chassis gets specified for education, healthcare, and government corridors rather than a medium duty lock.
11) I only need a mechanical Grade 1 lever on this opening, not access control. What should I buy instead?
Skip the electrified chassis. The 5491LN carries a 24VDC electrified mechanism and an RX switch that only earn their cost when tied to a panel. For a plain heavy duty opening, the Falcon K101 is a Grade 1 non-keyed passage cylindrical lock fire rated and covering 1-3/8 inch to 2-1/4 inch, the same door range. For a keyed but non-electrified Grade 1 lever, the Dexter C1000 Series classroom and classroom security functions cover 1-3/8 inch to 1-3/4 inch doors.
12) Can I keep the existing door prep if I'm swapping in the 5491LN?
Mechanically it is a standard bored lock chassis on a 2-3/4 inch backset, so the cross bore and latch prep on most Grade 1 cylindrical openings carry over. What does not carry over is power: this is an electrified lock, so the frame and door need wire transfer, either an electric hinge or a door loop, plus a home run back to a 24VDC supply and the access panel. Budget that raceway work, not just the lock.
13) The 5491LN is more lock than I need on an interior door - what is a simpler Grade 1 cylindrical lever?
For an opening that does not need access control, a mechanical Grade 1 cylindrical lever covers it. The Falcon K101 is a Grade 1 heavy duty passage lever with non-handed levers and a fire rating, fitting doors 1-3/8 inch to 2-1/4 inch. The Corbin Russwin CL3110 is a Grade 1 vandal resistant passage/closet lever, fire rated, for 1-3/4 inch to 2 inch doors. Neither is electrified, so neither offers the 24VDC fail secure operation or request to exit signaling of the Accentra 5491LN Augusta.
14) Is a keypad lever lock like the Lockey 2835 or Delaney LP250 a substitute for the 5491LN?
No, they solve different problems. The Accentra 5491LN Augusta is a wired 24VDC electrified lock that ties into an access control system and reports request to exit. The Lockey 2835 is a standalone mechanical pushbutton keyless lever with passage function for doors 1-3/16 inch to 2 inch, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. Both are credential-at-the-door products with no panel connection, so they cannot be monitored, scheduled, or released from a central system.
15) I need Grade 1 keyed cylindrical levers on the non-electrified doors to match the 5491LN openings - what works?
Within Grade 1 keyed cylindrical levers, the Dexter C1000 series covers classroom, classroom security, and asylum functions on doors 1-3/8 inch to 1-3/4 inch for the classroom versions and 1-3/8 inch to 2 inch for the asylum version. These use conventional keying rather than the 6 pin LFIC-Yale large format interchangeable core prep on the Accentra 5491LN Augusta, so a facility standardizing on Yale large format cores should verify core compatibility before mixing them on the same key system.
16) What finish does the Accentra 5491LN Augusta lever come in?
626 satin chrome, which is the standard commercial finish on most institutional openings and the one that will match existing exit devices, closers, and hinges on a typical school or office building. If the rest of the floor is already 626, this drops straight in visually.
17) Are residential leversets like Kwikset or Baldwin an alternative for these commercial doors?
Not for the same duty. The Kwikset 200BRNL Breton passage lever is Grade 3 for 1-3/8 to 1-3/4 inch doors, and the Baldwin Estate 5103 is offered in passage, privacy, and half dummy functions. These are decorative and residential-duty products. The Accentra 5491LN Augusta is a commercial Grade 1 cylindrical lever lock with free wheeling lever for vandal resistance and UL/cUL fire rating up to 3 hours, which is what a school, healthcare, or multi-tenant corridor opening typically requires.
How fast can I get the Accentra AU5491LN-1210 LC 626 REX 24V 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 AU5491LN-1210 LC 626 REX 24V come with a warranty?
Absolutely. The Accentra AU5491LN-1210 LC 626 REX 24V 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 AU5491LN-1210 LC 626 REX 24V?
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 AU5491LN-1210 LC 626 REX 24V from ZenSupply?
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