Corbin Russwin CL33903 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,622.00
$884.73
Corbin Russwin CL33903 Grade 1 Fail Safe Lever, 12AC/DC, NZ Lever, D Rose

Corbin Russwin CL33903 Grade 1 Fail Safe Lever, 12AC/DC, NZ Lever, D Rose

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Model: CL33903 NZD 626 12AD M92
$1,622.00
$884.73
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Corbin Russwin CL33903 Grade 1 Fail Safe Electromechanical Cylindrical Lever Lock, 12AC/DC, NZ Lever, D Rose

Commercial-Grade Electrified Cylindrical Lever Lock for High-Demand Applications

The Corbin Russwin CL33903 is a Grade 1 electromechanical cylindrical lever lock from the CL3300 Series, engineered for high-use commercial, industrial, and institutional environments. Operating on 12AC/DC power, this Fail Safe lock remains unlocked upon power loss, making it ideal for access-controlled egress applications. Featuring the NZ lever style with a D Rose trim, it accommodates door thicknesses from 1-3/4" to 2" and is non-handed for flexible installation. The standard deadlatch includes a square corner front measuring 2-1/4" x 1-1/8" with a 2-3/4" backset, paired with an ANSI Curved Lip strike with 1-1/4" lip length.

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

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail Establishments

Why Choose Corbin Russwin Quality?

Corbin Russwin CL33903 Series electromechanical cylindrical lever locks deliver professional-grade reliability with Grade 1 construction rated for the most demanding commercial, industrial, and institutional environments. The CL3300 Series is purpose-built for high-use applications where consistent Fail Safe performance and seamless access control integration are essential. Engineered for dependable operation, the CL33903 provides the security and durability that commercial door hardware professionals require.

Product Specs

Subcategory:
Cylindrical Locks
Product Group:
Mechanical Locks
Series:
CL33903 Series
Grade:
Grade 1
Keyed Function:
Single Cylinder
Standard Cylinder:
Conventional Cylinder
Standard Latch:
Deadlatch - Square corner front, 2-1/4" x 1-1/8", 2-3/4" backset
Standard Strike:
ANSI Curved Lip 1-1/4" Lip Length
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Electromechanical Cylindrical
Handle Type:
Lever
Product Attribute:
Electromechanical Cylindricall
Product Model:
CL33903
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 626 12AD M92 – Frequently Asked Questions

1) What happens to the Corbin Russwin CL33903 lever lock when the power goes out?
It unlocks. The CL33903 is the fail safe version of the CL33900 electrified cylindrical lock, so cutting power releases the outside lever and the opening is free. That is what you want on an access controlled egress door or anywhere the fire alarm has to release the opening. If you need the door to stay locked on power loss, order the fail secure version of the CL33900 instead, which is the other option in the same family.
2) Will the Corbin Russwin CL33903 fit a 1-3/4 inch commercial door with a 2-3/4 inch backset?
Yes. The CL33903 covers 1-3/4 inch to 2 inch doors as standard with a 2-3/4 inch backset, which is the standard commercial bored lock prep. Thicker doors over 2 inch up to 2-1/4 inch are an option, and 3-3/4 inch and 5 inch backsets are available if you are working a wide stile or unusual prep.
3) What power supply does the CL33903 electrified lever lock need?
12VAC or 12VDC, drawing 250mA continuous through a continuous duty solenoid. Size your power supply accordingly and account for that draw per opening if you are running several off one supply. The CL33900 family also runs at 24VAC/VDC, which drops the draw to 150mA if voltage drop over a long cable run is a concern.
4) Will the CL33903 latch into an existing ANSI strike prep?
It ships with a deadlatch, square corner front measuring 2-1/4 x 1-1/8 inches, and an ANSI curved lip strike, 4-7/8 x 1-1/4 with a 1-1/4 inch lip to center. Latchbolt throw is 1/2 inch stainless steel. If your frame already has the standard ANSI 4-7/8 inch strike cutout it drops in. On a fire rated opening, order the optional 3/4 inch throw fire latch instead of the standard 1/2 inch.
5) What cylinder and keyway does the CL33903 come with, and can I key it into my existing system?
Standard is a brass conventional cylinder, 6-pin L4 keyway, shipped 0-bitted so a locksmith can key it to your system. The chassis takes 6 or 7-pin conventional cylinders and all keying levels. If your building runs interchangeable core, two of the three configurations handle that: a 6-pin LFIC less core version and an SFIC prep less core version, both supplied without the core so you install your own.
6) Is the Corbin Russwin CL33903 rated for a high traffic school or hospital corridor?
It is built for it. The CL33903 is ANSI/BHMA A156.2 Series 4000 Grade 1, the heaviest cylindrical rating, and carries UL-cUL listing, ANSI A117.1 accessibility compliance, and California State Fire Marshal listing. The steel chassis is zinc dichromated for corrosion resistance and independent return springs keep the levers from sagging under constant use.
7) Can I use the CL33903 on a classroom door that needs to be locked down from inside?
Not as configured. The CL33903 is a single cylinder electrified fail safe lock, so it unlocks when power drops, which is the opposite of what a lockdown asks for. For classroom intruder work Corbin Russwin makes the CL3352, a double cylinder lockset with always-free egress that lets staff secure the door from within the room. If a straight keyed classroom function is all you need, the Cal-Royal AG03 classroom lever runs a 2-3/4 inch backset and Schlage C keyway.
8) What Grade 1 cylindrical lever should I use on the non-access-controlled doors in the same opening group as the Corbin Russwin CL33903?
The CL33903 is an electromechanical cylindrical lever lock carrying ANSI/BHMA Grade 1, so for doors in the same run that take no power, stay at Grade 1 with a mechanical lever. The Dexter C1000 Series is offered in a Grade 1 classroom function and the Falcon K101 is a Grade 1 passage cylindrical lock with non-handed levers, so a corridor set can mix keyed and non-keyed openings at the same grade while the CL33903 handles the access-controlled leaves.
9) We only need keyed storeroom security on this door, not an electrified lock. What replaces the Corbin Russwin CL33903?
If the door does not need to release from an access control system, the fail safe electrified chassis of the CL33903 is doing no work. A mechanical storeroom lever covers keyed-outside, free-egress duty: the Hager 2580 is a Grade 2 storeroom cylindrical lock with the Withnell lever, and the Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt. Both step down from the CL33903's Grade 1 rating, so check that against the traffic on the opening.
10) Can a keypad lever lock do the same job as the Corbin Russwin CL33903?
Not the same job. The CL33903 is an electromechanical cylindrical lever wired at 12AC/DC that unlocks on power loss, so it answers to a card reader or access control panel. Standalone keypad levers such as the Delaney LP250 electronic keypad leverlock, rated Grade 2, or the mechanical Lockey 2835 pushbutton keyless lever for doors 1-3/16 inch to 2 inch, credential at the door itself with no wiring and no panel tie-in. Choose the keypad units where there is no head-end to connect to.
11) My door is 1-3/8 inch thick. Will the Corbin Russwin CL33903 fit, and what else would?
The CL33903 is built for doors 1-3/4 inch to 2 inch, so a 1-3/8 inch leaf is under its range. Among cylindrical levers that reach that thickness, the Falcon K101 covers 1-3/8 inch to 2-1/4 inch as a Grade 1 passage lock, the Dexter C1000 asylum function covers 1-3/8 inch to 2 inch at Grade 1, and the Hager 2510 passage lever covers 1-3/8 inch to 2 inch at Grade 2. None of those are electrified, so a thin door needing access control will need a different approach.
12) How does the CL33903 connect to the access control wiring?
Through an ElectroLynx 8-pin connector, which is standard on the Corbin Russwin electrified products. It plugs into a matching ElectroLynx harness in the door and frame rather than requiring field splices at the lock. The three orderable configurations all include request to exit or an SFIC prep, so confirm which signal your panel needs before you pick.
13) Do I have to specify handing for the Corbin Russwin CL33903?
No. The CL33903 is non-handed, so one lock covers left and right hand openings. The only exception in the CL3300 line is FZD trim, which is handed. That makes it easier to stock a single part number across a building.
14) What keeps someone from forcing the outside lever on a locked CL33903?
The Lever Release design. When the lock is secure, the outside lever rotates freely instead of transmitting force into the chassis, so someone hanging on it or kicking it does not break the mechanism. The auxiliary latchbolt is deadlocking as well, which blocks carding of the latch when the door is closed. Both matter on institutional and multi-tenant openings where abuse is the usual failure mode.
15) I just need a Grade 1 lever on an interior door with no access control. Is the CL33903 overkill?
Yes, if there is no card reader or panel involved. The CL33903 is an electrified lock and needs a 12V supply and wiring run into the door to do anything. For a plain non-keyed Grade 1 opening, a mechanical cylindrical lever like the Falcon K101 passage (Grade 1, heavy duty, 1-3/8 inch to 2-1/4 inch doors, fire rated) or the Design Hardware X75 passage (Grade 1, 1-3/4 inch doors) does the job without power. Keep the CL33903 for the openings the access control system actually controls.
16) What do I order for the inactive leaf next to a Corbin Russwin CL33903 opening?
An inactive or pull-only leaf takes dummy trim, not a lock. The CL33903 is a keyed single-cylinder electrified lever; the matching non-functioning trim in a heavy duty Grade 1 build is the BEST 9K Series 1DT single dummy trim cylindrical lever, with the Accentra 455LN Augusta as another Grade 1 single dummy lever. The BEST 7KC single dummy trim is the Grade 2 medium duty equivalent if the leaf sees light use.
17) Is a Grade 2 lever a fair substitute for the Corbin Russwin CL33903 on a high-traffic commercial door?
The CL33903 is rated to ANSI/BHMA Grade 1 and is a commercial lockset. Grade 2 cylindrical levers such as the Falcon B511CP6D entry/office lock, rated medium duty, or the Accentra 5301LN Augusta passage lever sit a tier below on the cycle and strength requirements of the standard. They are a reasonable match for lower-traffic interior doors, not a like-for-like swap for a Grade 1 opening.
18) What looks like an alternative to the Corbin Russwin CL33903 but will not work on a commercial opening?
Residential-tier levers get mistaken for it. The Kwikset 200BRNL Breton passage lever and the 300BRNL Breton privacy lever are Grade 3 and built for 1-3/8 to 1-3/4 inch doors, and the Master Lock BC Series keyed entry lever is also Grade 3. The CL33903 is a Grade 1 commercial electromechanical lever for 1-3/4 to 2 inch doors, so those units do not stand in for it on an access-controlled or high-traffic leaf.
19) We key our building on Schlage C. How does that affect choosing against the Corbin Russwin CL33903?
The CL33903 ships with a conventional cylinder and is also offered in 6-pin LFIC less core and SFIC prep less core builds, so it can be cored to whatever system the building runs. If you would rather buy the lock already in Schlage C, 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 cylinder. Those are mechanical, so they do not replace the electrified function.
20) What lever style and finish does the CL33903 come in?
Newport lever on a D rose, in 626 satin chrome. The CL3300 series carries four solid cast lever designs overall (Armstrong, Newport, Princeton, Frascati), so if the other doors in your building are running a different one you can match within the same series. MicroShield antimicrobial coating is available as option code C for healthcare work.
21) Is the CL33903 hard to install compared to a standard cylindrical lockset?
It installs like a normal bored lock plus the wiring. The chassis uses EZ-Install components to cut prep time and anti-rotational through-bolts at 6 and 12 o'clock to hold the roses square. Where the time goes is the door prep for the ElectroLynx harness and the transfer at the hinge, which a standard mechanical lever does not require.
How fast can I get the Corbin Russwin CL33903 NZD 626 12AD M92 delivered?
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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 626 12AD M92 come with a warranty?
Absolutely. The Corbin Russwin CL33903 NZD 626 12AD M92 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 626 12AD M92?
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
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