Name: Corbin Russwin CL33903 Grade 1 Fail Safe Lever, Electrified Cylindrical Lever Lock, 24VAC/DC
Brand: Corbin Russwin
SKU: CL33903 NZD 613E 24AD
Price: 734.18 USD
Availability: InStock

Product Overview
FAQs

Corbin Russwin CL33903 Grade 1 Fail Safe Electrified Cylindrical Lever Lock, 24VAC/DC with Mechanical Cylinder Override

Remote Locking and Unlocking for High-Security Commercial Applications

The Corbin Russwin CL33903 is a Grade 1 Fail Safe Electrified Cylindrical Lever Lock engineered for demanding commercial environments where remote access control and life safety compliance are essential. Designed for doors ranging from 1-3/4" to 2" in thickness with a 2-3/4" backset, this leverset operates on 24VAC/DC (hard wired, 150mA) and features a self-contained integral solenoid that allows installation in a modified cylindrical door prep. When power is on, the outside lever is locked; when power is off, the outside lever unlocks, providing true fail safe operation. The inside lever remains always free, ensuring unobstructed egress at all times.

Professional Features & Benefits

Grade 1 cylindrical lockset per ANSI/BHMA A156.2 Series 4000, Grade 1
Lever Release™ design for vandal resistance — outside lever rotates freely when locked
EZ-Install components significantly reduce installation time
Independent return springs prevent lever sag
4 solid cast lever options (Armstrong, Newport, Princeton, Frascati)
Anti-rotational through-bolts at 6 and 12 o'clock positions
Accommodates 6 or 7-pin conventional cylinders and all keying levels
CL3352 Classroom Intruder function: double-cylinder lockset, always-free egress
Available with MicroShield® antimicrobial coating (suffix option code "C")
CL33900 electrified option: fail safe and fail secure, 12 or 24VAC/VDC
ElectroLynx® 8-pin connector on all electrified products
Seven-year limited warranty (two-year for electrified)

Technical Specifications

Grade: ANSI/BHMA A156.2 Series 4000, Grade 1
Handing: Non-handed (except FZD trim)
Door Thickness: 1-3/4" (44mm) 2" (51mm) standard; optional over 2" 2-1/4" (57mm)
Backset: 2-3/4" (70mm) standard; optional 3-3/4" (95mm) and 5" (127mm)
Latchbolt: Stainless steel, 1/2" (13mm) throw; optional 3/4" (19mm) fire latch
Auxiliary Latchbolt: Deadlocking — prevents manipulation when door is closed
Lock Chassis: Steel, zinc dichromated for corrosion resistance
Front: Wrought brass, bronze, or stainless steel, 2-1/4" x 1-1/8"
Strike: Wrought brass or stainless steel ANSI curved lip, 4-7/8" x 1-1/4" x 1-1/4" lip to center
Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
Electrified Voltage: 12VAC/DC or 24VAC/DC (CL33900 Series)
Electrified Current: 250mA @ 12VAC/VDC; 150mA @ 24VAC/VDC, continuous duty solenoid
Certifications: ANSI/BHMA A156.2 Grade 1; UL-cUL listed; ANSI A117.1 Accessibility; California State Fire Marshal
Warranty: Seven-year limited (two-year for CL33900 electrified)

Professional Applications

Stairwell Towers and Controlled Egress Points
Tenant Space Entry and Access Control
Pharmacies and Controlled Substance Storage Areas
Computer Rooms and High-Security Areas
Healthcare Facility Access Control
Educational Institution Security Systems
Commercial Office Buildings with Remote Locking Requirements

Why Choose Corbin Russwin Quality?

Corbin Russwin CL33900 Series electrified cylindrical lever locks deliver professional-grade reliability through a self-contained integral solenoid design, Grade 1 construction, and proven CL3300 Series Lever Release™ Mechanism technology. Operating on 24VAC/DC at a minimal 150mA hard-wired draw, these locks are engineered to provide remote locking and unlocking while meeting life safety codes in the most demanding commercial environments. The non-handed design, mechanical cylinder override, and compatibility with the ElectroLynx® quick-connect system make the CL33903 a versatile and dependable solution for stairwells, pharmacies, tenant spaces, and other high-security applications.

Manufacturer Resources

Corbin Russwin Condensed Catalog

Product Specs

Subcategory:: Cylindrical Locks
Product Group:: Mechanical Locks
Series:: CL33900 Series
Grade:: Grade 1
Keyed Function:: Single Cylinder
Standard Cylinder:: Conventional Cylinder
Standard Latch:: 686F17: Deadlatch - Square corner front, 2-1/4" x 1-1/8", 2-3/4" backset
Standard Strike:: 217L13: ANSI Curved Lip 1-1/4" Lip Length
Power:: Hard Wired (150mA)
Product Subgroup:: Bored Locksets
Product Type:: Leversets
Keyed:: Yes
Commercial/Residential:: Commercial
Electronic:: Yes
Lock Type:: Cylindrical
Battery Operated:: No
Handle Type:: Lever
Product Attribute:: Cylindrical Locks
Tags:: corbin russwin electrifiedlockset
Product Model:: CL33903
Product Voltage:: 24VAC/DC
Door Hand Direction:: Non-Handed
Door Thickness Range:: 1-3/4" to 2"
Product Category:: Mechanical Locks
Backset (Distance):: 2-3/4"
Department:: Door Hardware

Corbin Russwin CL33903 NZD 613E 24AD – Frequently Asked Questions

1) Will the Corbin Russwin CL33903 electrified lever unlock the door if the building loses power?

Yes, that is the point of the fail safe function. Power on holds the outside lever locked; drop the power and the outside lever unlocks so anyone can get in. The inside lever is always free, so egress never depends on the electronics. If you need the opposite behavior, where a power loss leaves the door locked and secure, you want the fail secure version of the CL33900 Series instead. Pick based on whether the opening is a life safety egress path or a room that must stay secure in an outage.

2) What voltage and current does the CL33903 cylindrical lock draw?

This one runs 24VAC or 24VDC at 150mA, hard wired, on a continuous duty solenoid. Size the power supply for continuous draw, not momentary. The CL33900 Series is also built in a 12VAC/DC version that pulls 250mA, so if your existing supply is 12V you order that variant rather than this one. Nothing is battery powered here.

3) Will a CL33903 electrified lever fit a 1-3/4 inch commercial door with a 2-3/4 inch backset?

Yes. The CL33903 is built for 1-3/4 inch to 2 inch doors with a 2-3/4 inch backset as standard, which is the normal commercial opening. The CL3300 platform also offers an optional door thickness over 2 inches up to 2-1/4 inches, and optional 3-3/4 inch and 5 inch backsets for wider stiles. On a thinner 1-3/8 inch door, common on older interior openings, this is not the lock.

4) Do I need a special door prep or an electric hinge to install an electrified cylindrical lever lock?

The solenoid is self contained inside the chassis, so the CL33903 goes into a modified cylindrical prep rather than a mortise pocket. You still have to get power to the lock leaf, which means a power transfer through the hinge edge; the lock itself terminates in an ElectroLynx 8-pin quick connector, standard on all Corbin Russwin electrified products, so it plugs into a matching ElectroLynx transfer rather than being spliced. Anti-rotational through-bolts land at the 6 and 12 o'clock positions.

5) Will the CL33903 latch into the strike that is already in my frame?

It ships with a 686F17 deadlatch, square corner front, 2-1/4 by 1-1/8 inches, 2-3/4 inch backset, and a 217L13 ANSI curved lip strike with a 1-1/4 inch lip length. The strike cutout is the standard 4-7/8 by 1-1/4 inch ANSI shape, so if your frame already carries an ANSI strike prep the new strike drops straight in. Latchbolt throw is 1/2 inch stainless as standard, with an optional 3/4 inch fire latch. A deadlocking auxiliary latch blocks manipulation once the door is shut. If your existing frame has a round corner or a T-strike prep, plan on new prep or a filler.

6) Can I put the CL33903 on my existing Corbin Russwin master key system?

Yes. Order it less core as CL6 or CL7 and you drop in your own Corbin Russwin 6-pin or 7-pin large format interchangeable core, so it joins the system you already key. The standard build is a conventional 6-pin brass cylinder in the L4 keyway, 0-bitted, and it accepts 6 or 7-pin conventional cylinders at all keying levels. LC gets you the lock less the conventional cylinder if you are supplying your own. Keying is specified as keyed different or keyed alike, and there is a free text field for a specific keyway, keyset or master key requirement.

7) What is the closest Grade 1 cylindrical lever lock to the Corbin Russwin CL33903 if the opening does not need electrified control?

The CL33903 is a Grade 1 cylindrical lever lock built around an electrified solenoid running on 24VAC/DC. When the opening is controlled by key alone and no wiring is going to the door, the Dexter C1000 Series Entry/Office cylindrical lever lock is Grade 1 in the same bored-lock format, keyed, with a clutching lever, for doors 1-3/8 inch to 1-3/4 inch thick. The CL33903 covers 1-3/4 inch to 2 inch doors and is non-handed. The difference is control: the Corbin lock changes state from an access control panel, the Dexter changes state at the cylinder.

8) I need a classroom opening secured from inside without running power to the door - what replaces an electrified Corbin CL33903 there?

The CL33903 is a fail safe electrified lever lock: the outside lever unlocks when power drops, which is what stairwells and controlled egress want, and the opposite of what a lockdown-capable classroom wants. For a classroom opening, the Dexter C1000 Series Classroom Security cylindrical lever lock is a Grade 1 keyed clutching lever for 1-3/8 inch to 1-3/4 inch doors, and the Dexter C1000 Classroom function covers the same door range at Grade 1 where only outside keying is needed. Neither takes wiring.

9) Is a keypad lever lock a substitute for a Corbin Russwin CL33903?

They solve different problems. The CL33903 is hard wired at 150mA on 24VAC/DC, so a central panel or card reader decides when the outside lever is locked, and it takes a conventional 6-pin cylinder for mechanical key override. A Delaney LP250 electronic keypad leverlock is Grade 2 and a Lockey 2835 is a mechanical pushbutton keyless lever for 1-3/16 inch to 2 inch doors - both are credential-at-the-door devices with no wiring back to a panel. If the access control system needs to unlock the opening remotely or on a fire alarm signal, a keypad will not do it.

10) Do I have to order the CL33903 handed for a left or right hand door?

No handing to specify. The lock is non-handed, so one part number covers left and right hand openings; the only handed exception in the CL3300 trim range is the FZD trim. The three lever designs offered here, Armstrong (AZD), Newport (NZD) and Princeton (PZD), are all non-handed cast levers with independent return springs to stop lever sag on high traffic doors.

11) Can staff still key their way in if the access control system goes down on a CL33903 opening?

There is a mechanical cylinder override, so the key works independently of the electronics. That matters on stairwell doors, pharmacy and controlled substance storage, computer rooms and tenant entries where the reader or the panel can fail but people still have to get through. Outside lever also uses the Lever Release mechanism: when it is locked the lever rotates free instead of resisting, which is what stops someone snapping it off.

12) Is the CL33903 lever lock rated Grade 1 and approved for use in California?

Grade 1 under ANSI/BHMA A156.2 Series 4000, which is the top commercial durability tier for a bored lockset. It is also UL-cUL listed, meets ANSI A117.1 accessibility, and carries California State Fire Marshal listing. The chassis is steel with a zinc dichromate coating for corrosion resistance, and the front comes in wrought brass, bronze or stainless steel.

13) Should I use an electrified cylindrical lever lock or a standard keyed storeroom lever for a controlled door?

Go electrified only if you actually need to lock or unlock the opening remotely, from a card reader, a panel or a front desk. That is what the CL33903 buys you, at the cost of running power to the door. If the door just needs to stay locked outside and free inside with a key for entry, a mechanical storeroom lever does the same job with no wiring; ZenSupply carries the Hager 2580 Grade 2 storeroom cylindrical lock with the Withnell lever for 1-3/8 to 2 inch doors, and the Cal-Royal AG05 Grade 2 storeroom lever with a deadlocking latchbolt for 1-3/8 to 1-3/4 inch doors. Neither is Grade 1 and neither can be released remotely.

14) What Grade 1 lever locks work on the same doors as the CL33903 if I do not need the electrified function?

For heavy traffic openings on the same 1-3/4 inch to 2 inch doors, ZenSupply carries the Falcon K101 Grade 1 heavy duty passage cylindrical lock, fire rated, covering 1-3/8 to 2-1/4 inch doors, and the Design Hardware X75 Grade 1 passage lever for 1-3/4 inch doors. Both are passage function, so they latch but do not lock, which suits corridor and stair side doors where the CL33903 is doing the securing elsewhere. For a keyed Grade 1 alternative the Dexter C1000 Series entry/office lever covers 1-3/8 to 1-3/4 inch doors. None of these can be released remotely.

15) Is a keypad lever lock a substitute for an electrified cylindrical lock like the CL33903?

Not for remote control. A standalone keypad lever such as the Lockey 2835, a mechanical pushbutton unit for 1-3/16 to 2 inch doors, or the Delaney LP250 Grade 2 electronic keypad lever, controls access at the door with a code and needs no wiring. What it cannot do is unlock on a signal from a panel or a fire alarm interface, which is the whole reason to run 24V to a CL33903. If the requirement is coded access on an isolated door, a keypad is simpler. If the requirement is a stairwell or tenant door the system has to release, it is not a substitute.

16) Can I order several CL33903 locks keyed alike for one tenant space?

Yes, keying is a required selection: KD keyed different is the standard, KA keyed alike ties multiple locks to one key. That is the choice for a suite or a floor where one key should open every controlled door. There is also an open text field for special cylinder or keying requirements, which is where a specific keyway or an existing master key system gets specified.

17) Which Grade 1 storeroom-style lever works on a door thicker than 2 inches where the CL33903 does not reach?

The CL33903 covers 1-3/4 inch to 2 inch doors as standard. The Falcon K101 Grade 1 passage cylindrical lock spans 1-3/8 inch to 2-1/4 inch with non-handed levers, is fire rated, and is rated heavy duty, so it reaches thicker leaves. Note the K101 is a passage function - the lever is always free and there is no key - so it suits an opening that needs the thickness range and the Grade 1 chassis but no locking.

18) What do I order for the inactive leaf or the pull side of a pair when the active leaf gets a CL33903?

The CL33903 is a keyed, electrified working lockset, which is more hardware than an inactive leaf needs. For a dummy trim in a Grade 1 heavy duty chassis, the BEST 9K Series 1DT single dummy trim cylindrical lever lock is non-keyed Grade 1 heavy duty, and the Accentra 455LN Augusta is a Grade 1 heavy duty single dummy in the 5400 Series. The BEST 7KC Series single dummy trim is the Grade 2 medium duty equivalent.

19) For back-of-house doors in the same building as the CL33903 openings, is there a lighter storeroom lever?

The CL33903 is Grade 1 and commercial rated, sized for stairwells and controlled egress. For a janitor closet or storage room on the same job that only needs key-in-lever storeroom operation, the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt for 1-3/8 inch to 1-3/4 inch doors, and the Hager 2580 is a Grade 2 storeroom lever with the Withnell lever for 1-3/8 inch to 2 inch doors. Both are mechanical only, so they cannot be released from an access control panel.

20) Can I use a Baldwin or Emtek lever in place of the Corbin CL33903 on a commercial opening?

No. The CL33903 is a Grade 1 commercial cylindrical lock with a keyed single-cylinder function and a 2-3/4 inch backset. The Baldwin Estate 5103 is offered in passage, privacy, and half dummy - none of which lock with a key - and the Emtek Classic Brass Cortina and Arts and Crafts leversets in the same family are dummy pairs. Those are residential and decorative trim; they will not carry a Grade 1 opening or accept access control.

21) The CL33903 comes with a Corbin Russwin L4 keyway - what if the building is keyed to Schlage C?

The CL33903 ships with a conventional 6-pin cylinder and is also ordered less core for Corbin Russwin LFIC 6-pin or 7-pin, or less conventional cylinder entirely, so it can be built to whatever core the building standardizes on. Where a lock in another line has to join a Schlage C system, the Cal-Royal AG03 classroom lever and AG00 entrance lever are supplied with a 6-pin Schlage C keyway keyed different, and the Arrow MK33-BD-CS asylum lock uses a conventional Schlage C keyway cylinder.

22) What lock handles a patient room or holding area where the CL33903 fail safe behavior is wrong?

A fail safe lock unlocks the outside lever when power drops, so it is not the right device for a room that must stay secure independent of power. The Dexter C1000 Series asylum function (F87) is a Grade 1 cylindrical lock for 1-3/8 inch to 2 inch doors, keyed both sides, and the Arrow MK33-BD-CS is a Grade 2 asylum lock with a ball knob. Those hold their state mechanically. Verify egress requirements for the room type before specifying either.

23) What finishes does the Corbin Russwin CL33903 come in for matching the rest of a building?

Thirteen finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 613E dark oxidized satin bronze equivalent, 613L dark oxidized satin bronze oil-rubbed, 618 bright nickel, 625 bright chrome, 626 satin chrome, 722 black oxidized bronze oil-rubbed, BSP black suede and WSP white suede powder coat. 626 satin chrome is the usual commercial default, so a floor already standardized on 626 will match. Each finish pairs with the Armstrong, Newport or Princeton lever.

24) Is there an antimicrobial option for the CL3300 lever in a hospital or clinic?

Yes. MicroShield antimicrobial coating is available on the CL3300 platform under suffix option code C. On a healthcare corridor or a patient area that is specified alongside the finish. The same platform also offers the CL3352 classroom intruder function, a double cylinder lockset with always free egress, for rooms that have to be locked down from inside.

25) What matches the CL33903 backset on an adjacent opening that only needs a mechanical classroom function?

The CL33903 uses a 2-3/4 inch backset with a 686F17 deadlatch, square corner front, 2-1/4 inch by 1-1/8 inch. The Cal-Royal AG03 classroom lever is also a 2-3/4 inch backset Grade 2 lock, so the door prep centerline matches on a door already bored for the Corbin. Confirm the front size and door thickness against the leaf before ordering, since the two locks are not from the same series.

26) Is a Grade 1 passage lever an acceptable stand-in on a stairwell door next to a CL33903?

Only where the door is not required to latch locked. The CL33903 is keyed and locks the outside lever under power. The Falcon T101 is a Grade 1 heavy duty cylindrical passage lever and the Design Hardware X75 is a Grade 1 passage lever lockset for 1-3/4 inch doors - both leave the lever free from both sides at all times. They match the CL33903 on grade but not on security function, so they suit a stair door that is free-swinging on both sides by code.

How fast can I get the Corbin Russwin CL33903 NZD 613E 24AD 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 Corbin Russwin CL33903 NZD 613E 24AD come with a warranty?

Absolutely. The Corbin Russwin CL33903 NZD 613E 24AD 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 Corbin Russwin CL33903 NZD 613E 24AD?

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 Corbin Russwin CL33903 NZD 613E 24AD from ZenSupply?

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Corbin Russwin CL33903 Grade 1 Fail Safe Lever, Electrified Cylindrical Lever Lock, 24VAC/DC

Corbin Russwin CL33903 Grade 1 Fail Safe Electrified Cylindrical Lever Lock, 24VAC/DC with Mechanical Cylinder Override