SDC Z7252EQ SDC Failsecure Electrified Cylindrical Lockset, Locked Outside

The SDC Z7252EQ is an ANSI Grade 1 fail-secure electrified cylindrical lockset from the Electra 7200 Series, designed for electronically controlled entry with unrestricted mechanical egress. Operating on field-selectable 12/24VDC power at 600mA or 300mA peak current, the lock features an Eclipse lever and rose, vandal-resistant clutch mechanism, and 626 satin chrome finish. Its 2-3/4-inch backset, 9/16-inch latchbolt throw, and standard monitoring contacts support commercial door installations. The outside lever remains locked during power loss, while the inside lever permits free exit.

SDC Z7252EQ Electra 7200 Series Fail-Secure Electrified Cylindrical Lockset

The SDC Z7252EQ Electra Electrified Cylindrical Lockset combines electronic access control with mechanical door latching for commercial, industrial, and institutional openings. Its fail-secure, power-to-unlock operation keeps the outside lever locked when electrical power is removed and permits authorized entry through an access control signal or mechanical key. The inside lever remains mechanically operable at all times, providing unrestricted egress without depending on a separate motion sensor or exit release switch. The lock incorporates Eclipse lever trim, a vandal-resistant clutch mechanism, and independent lever return springs to reduce damage from forced lever operation and maintain proper lever positioning.

The Z7252EQ operates on 12VDC or 24VDC power with a 10% voltage tolerance. Its solenoid draws 600mA inrush and 250mA holding current at 12VDC, or 300mA inrush and 150mA holding current at 24VDC, according to SDC's installation instructions. The lock includes a single-pole, double-throw (SPDT) latch status switch rated at 3A at 30VDC for connection to compatible monitoring equipment. Optional request-to-exit monitoring provides a momentary signal when the inside lever is operated, allowing an access control panel to identify authorized exit activity. The PR-7200 power regulator is available separately for fail-secure models to reduce holding current, operating temperature, and inductive electrical transients.

The SDC Z7252EQ features a standard 2-3/4-inch backset and a 9/16-inch latchbolt throw, with an ANSI A115.2 cylindrical lock preparation and a standard 4-7/8-inch ANSI strike. The lock accommodates compatible commercial doors and is supplied with Eclipse lever and rose trim in a 626 satin chrome finish. Its conventional cylinder uses a Schlage C-compatible keyway, while optional small-format interchangeable core configurations are available under separate model designations. The clutch mechanism allows the outside lever to rotate under excessive force without retracting the latch when locked. Electrical installation requires a suitable regulated DC power supply and compatible power transfer hardware, such as an electrified hinge or concealed door loop.

The SDC Z7252EQ is an ANSI/BHMA Grade 1 heavy-duty cylindrical lockset intended for controlled entrances, equipment rooms, offices, and institutional security applications. The Electra 7200 Series carries UL 10C and ULC-S104 fire door testing listings and California State Fire Marshal approval for applicable installations. Its mechanically operated inside lever maintains egress during power failure, while the latch remains engaged when the outside lever is electrically unlocked, preserving the door's normal latching function. The Z7252EQ differs from the Z7250EQ fail-safe model, which unlocks the outside lever when power is removed. Installation must follow SDC's door preparation, wiring, and hardware alignment instructions, with final fire door and accessibility compliance determined by the complete opening assembly.