Corbin Russwin CL33903 Grade 1 Fail Safe Lever, Electrified Cylindrical Lever Lock, 12VAC/DC

Corbin Russwin CL33903-KEYED-12AD Grade 1 Fail Safe Electrified Cylindrical Lever Lock with Mechanical Cylinder Override, 12VAC/DC

Remote Locking and Unlocking with Life Safety Code Compliance for High-Security Commercial Applications

The Corbin Russwin CL33903-KEYED-12AD 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 1-3/4" to 2" thick with a 2-3/4" backset, this lock features a self-contained integral solenoid operating on 12VAC/DC (250mA hard-wired) and utilizes the proven CL3300 Series Cylindrical Lockset platform with Lever Release™ Mechanism. In Fail Safe mode, power-on locks the outside lever while power-off unlocks it, ensuring compliant egress at all times. A conventional 6-pin cylinder with mechanical override and two included nickel silver keys provide reliable backup access.

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 Spaces Requiring Remote Access Control
• Pharmacies and Controlled Substance Storage Areas
• Computer Rooms and High-Security Areas
• Healthcare Facility Access Control
• Educational Institution Security Systems
• Government and Municipal Buildings

Why Choose Corbin Russwin Quality?

Corbin Russwin electrified cylindrical lock products deliver professional-grade reliability built on the proven CL3300 Series platform with Lever Release™ Mechanism, rated Grade 1 for the most demanding commercial applications. The CL33903-KEYED-12AD features a self-contained integral solenoid, mechanical cylinder override, and ElectroLynx® quick-connect compatibility, ensuring both installation efficiency and long-term operational dependability. Engineered for commercial environments where increased security and life safety code compliance are non-negotiable requirements.