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

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.