Corbin Russwin ML20932 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,117.12
$1,238.57
Corbin Russwin ML20932 Double Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, LS-Lustra Lever

Corbin Russwin ML20932 Grade 1 Double Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, LS-Lustra Lever

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Model: ML20932-LSA-626-SAF
From the ML2000 Series Collection
$2,117.12
$1,238.57
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Corbin Russwin ML20932-LS Mortise Electrified Lever Lockset, Double Cylinder Both Grips Lock with Lustra Lever, Fail Safe/Fail Secure

Commercial-Grade Electrified Mortise Security for High-Traffic, Demanding Environments

The Corbin Russwin ML20932-LS Mortise Electrified Lever Lockset is part of the ML2000 Series, an ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 mortise lock engineered for high-traffic, abusive environments. Constructed of heavy-gauge steel, this double-cylinder, both-grips-lock configuration supports both Fail Safe (SAF) and Fail Secure (SEC) operation modes, integrating seamlessly with access control platforms and Corbin Russwin key systems including the patented Access 3® and Pyramid high-security systems. Designed for doors with a standard thickness of 1-3/4" (accommodating 1-3/8" minimum to 4" maximum) and a standard backset of 2-3/4" (ranging from 2-3/8" minimum to 2-3/4" maximum), this lockset features a 3/4" latchbolt throw and is UL listed and UL10C compliant, including UL-cUL listing for fire doors rated up to and including 3 hours.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
  • UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
  • Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
  • Multi-function capability: 12 functions configurable from one ML2054 lockbody
  • Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
  • 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
  • Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
  • Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
  • Motorized Electric Latch Retraction (MELR) available for ML20900 series
  • Thru-bolted trim designs for proper alignment and increased security
  • Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
  • UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
  • Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

  • Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
  • Handing: Handed; quick reversible — re-handed without disassembling the lock case
  • Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
  • Backset: 2-3/4" (70mm)
  • Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
  • Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
  • Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
  • Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
  • Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
  • Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
  • Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
  • Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
  • Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
  • Warranty: Ten-year mechanical; five-year MELR; two-year electrical

Professional Applications

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

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locksets are built to exceed ANSI/BHMA A156.13 Series 1000 Grade 1 requirements, constructed of heavy-gauge steel with direct drive performance and EcoFlex® technology delivering up to 89% energy savings on electromechanical functions. The ML20932-LS is UL listed, UL10C compliant, UL-cUL listed for fire doors rated up to 3 hours, ADA compliant, ASTM E330 certified, and Florida Building Code Windstorm Certified, backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty. Engineered for demanding commercial applications where dependable, code-compliant performance is essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Standard Latch:
3/4" Latchbolt
Standard Strike:
ANSI-Straight Lip,1-1/8" (29mm) Lip to Center
Product Subgroup:
Mortise Lockset
Product Type:
Mortise Locks
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Fail Safe/Fail Secure
Product Model:
ML20932
Collection:
ML2000 Series
Product Function:
Fail Safe/Fail Secure
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Substrate:
Steel
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Corbin Russwin ML20932-LSA-626-SAF – Frequently Asked Questions

1) What is the difference between the Fail Safe and Fail Secure versions of the Corbin Russwin ML20932?
Both are orderable on the ML20932. Fail Safe (SAF) unlocks when power is removed, which is what you use on stair re-entry and other openings that must free up in a power loss. Fail Secure (SEC) stays locked when power drops, so the opening holds its security and egress comes from the inside lever. Pick the mode against the fire and life safety requirement for that door before you order, because the two are separate variants, not a field-selectable switch.
2) Will the ML20932 mortise lock fit a 1-3/4 inch commercial door with a 2-3/4 inch backset?
That is exactly the standard prep for it: 1-3/4 inch door thickness and a 2-3/4 inch backset. The lockcase is 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so the mortise pocket has to suit those. Optional door thicknesses are available from the ML2000 Series if your opening is thicker.
3) What does "double cylinder, both grips lock" mean on the ML20932?
Both the inside and outside levers are locked and both sides take a key cylinder, so entry from either direction requires a key or an electric release. On an electrified opening that means the access control system controls the outside lever while the inside lever stays secured too, which is how you handle doors between two controlled areas rather than a corridor-to-room door where free egress is needed. If you need the inside lever always free, this is the wrong function for your opening.
4) Do I have to order a cylinder with this Corbin Russwin electrified mortise lock, or can I use my building's existing keys?
Two keying choices are offered: Less Cylinder, so you can fit cylinders from your existing Corbin Russwin system, or the L4 keyway, supplied 6-pin brass and 0-bitted for keying on site. The lock works with new or existing Corbin Russwin key systems including the patented Access 3 and Pyramid high-security systems, and it accepts most other manufacturers' cylinders, so a building already standardized on another brand's keyway can usually stay on it.
5) Can I use this Corbin Russwin mortise lockset on a 3-hour fire rated door?
Yes. The ML2000 Series mortise lock is UL/cUL listed and UL10C positive pressure compliant for fire doors rated up to and including 3 hours, covering a single door up to 4 ft x 10 ft or a pair up to 8 ft x 10 ft. It is also ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 and ADA A117.1 compliant, plus California State Fire Marshal and Florida Building Code windstorm certified.
6) Will the ML20932 latch into the strike already in my frame?
The standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. The latchbolt is a two-piece anti-friction unit with a 3/4 inch (19mm) throw, the auxiliary latchbolt has a 9/16 inch effective deadlocking throw, and the stainless deadbolt throws 1 inch. If your existing frame has an ANSI strike prep with the same lip-to-center, it drops in; a shorter lip or a non-ANSI cutout means replacing the strike.
7) What are the alternatives to the Corbin Russwin ML20932 if I need an electrified mortise lock from a different brand?
A few to weigh. The Schlage L9092EU 03A is the closest wired equivalent we carry, an electric lock/unlock outside lever mortise for 1-3/4 inch doors with request-to-exit and 12/24VDC, corridor function. The BEST 45HW wired electromechanical mortise lock is a heavy duty option running 12V or 24V. The Command Access ML190 Series is a motorized mortise lock with field selectable EL/EU operation on 24VDC, which is useful when you do not want to commit to fail safe or fail secure at order time. Note the Corbin Russwin is a double-cylinder both-grips function, so the Schlage corridor function is not a like-for-like swap on locking behavior.
8) Is there a field-selectable fail safe / fail secure mortise lock as an alternative to the ML20932?
The Command Access ML190 Series motorized mortise lock is field selectable between EL and EU operation on 24VDC, in a heavy-duty storeroom function. The Corbin Russwin ML20932 is specified as Fail Safe or Fail Secure at order time rather than selected in the field, and it is a double cylinder both-grips-lock configuration rather than storeroom. If the access control spec is not finalized, the field-selectable ML190 covers both modes from one part; if the spec is set and you need both grips key controlled, the ML20932 matches that.
9) What should I use instead of the ML20932 if the door has no power to the frame?
Mechanical Grade 1 mortise locks are the alternative, since the Corbin Russwin ML20932 is an electrified lockset requiring Fail Safe or Fail Secure power. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. For a classroom opening, the Cal-Royal NM8070 is Grade 1 classroom function at the same 1-3/4 inch door thickness.
10) For a behavioral health or ligature-resistant opening, is the ML20932 the right mortise lock or is there a better option?
For anti-ligature trim, the TownSteel MRX-L-01 is a Grade 1 heavy-duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function with satin stainless ligature resistant arch trim. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. The Corbin Russwin ML20932 is Grade 1 for 1-3/4 inch doors and offers Behavioral Health BHSS and BLSS trim designs, so it remains the choice when the opening also needs electrified Fail Safe or Fail Secure control rather than passage operation.
11) Is the ML20932 handed, and can it be reversed in the field?
It ships handed but the latchbolt is Quick Reversible, so handing is changed in the field without taking the lock case apart. Practical upshot for a service call: one lock covers either hand, which is why the spec lists it as field reversible.
12) Should I order the request-to-exit option on this electrified mortise lock?
Request to Exit monitoring (RX) is available as a yes or no choice on every function and trim combination of the ML20932. Order RX when the access control system or alarm panel needs to know that someone turned the inside lever, typically to shunt a door alarm on authorized egress or to log exits. If the panel only needs to energize the lock, you can skip it. It cannot be added later without changing the lock, so decide at order time.
13) How durable is this lock for a high-traffic entrance like a school or hospital corridor?
Cycle testing on the ML2000 Series mortise lock ran to 14.5 million cycles (UL Verification ID V875753), well past the Grade 1 requirement, and the lockcase is heavy-gauge steel. The anti-friction two-piece latchbolt needs less force to close, which matters on doors with closers and stack pressure. For electromechanical functions, EcoFlex technology is cited at up to 89 percent energy savings, relevant when you are powering a bank of doors off one supply.
14) I need a keypad or credential reader on the door instead of wiring to a panel. What should I look at instead of the ML20932?
The ML20932 is a wired electrified lock that needs a power supply and an access control interface at the door. If you want a standalone or wireless lock with the reader built in, look at the Schlage CO-100 standalone electronic mortise lock with keypad reader (Grade 1, 1-3/4 inch doors), the Schlage LEMD ENGAGE Series wireless Grade 1 mortise with a 125kHz proximity reader and 3-hour fire rating, the TownSteel FME-2000 Grade 1 RFID mortise lockset, or the Dormakaba E-Plex 2066 pushbutton keyless mortise. Those avoid running power to every opening but manage credentials differently from a head-end system.
15) Can I standardize a whole building on the ML2000 Series and still use different lock functions on different doors?
Yes, and that is the main reason facilities spec the series. Twelve functions are configurable from a single ML2054 lockbody, so storeroom, classroom, office and electrified openings share one lockcase, one prep and one parts pool. Keying runs through new or existing Corbin Russwin systems including Access 3 and Pyramid. Trim and finish stay consistent across the building while the function changes door by door.
16) How much clearance do I need between the lever and the cylinder on this mortise lock?
Center to center from the knob or lever to the cylinder is 3-5/8 inches (92mm), and lever to thumbturn is 2-7/16 inches (62mm). Those are the numbers that matter when you are drilling an escutcheon or checking that an existing door prep lines up, and on narrower stiles or doors with glass lights they decide whether the trim clears.
17) Can I use a standalone electronic mortise lock instead of wiring an ML20932 to an access control panel?
Yes, if credential management at the door is acceptable. The Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with 300 user codes in classroom function for 1-5/8 to 1-7/8 inch doors, and the Schlage CO-100-MS-40-KP is a Grade 1 heavy-duty standalone electronic mortise lock with a keypad reader in privacy function for 1-3/4 inch doors. The Corbin Russwin ML20932 has no onboard credential reader; it is an electrified lockbody controlled by an external system, which is what lets it be released or secured from a head-end on loss of power.
18) What looks like an ML20932 alternative but will not work as one?
Mortise trim and lock bodies without a powered function are not substitutes. The Schlage L0170 is a Grade 1 half dummy mortise lever trim with no latching function, the Falcon MESC600DT is dummy escutcheon lever trim for M9900 exit devices, and the Sargent 130KB is a standard mortise thumbturn. Passage devices such as the Schlage PM010 Grade 1 passage latch mortise lock and the Falcon MA101 Grade 1 heavy-duty mortise passage lock are also non-keyed and unpowered. The Corbin Russwin ML20932 is an electrified double cylinder lockset with Fail Safe or Fail Secure operation, so none of these will hold or release the door under access control.
19) For a wireless or credential-based upgrade rather than a hardwired electrified mortise lock, what compares to the ML20932?
Two directions exist. The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and mobile-enabled deadbolt with LED, 3 hour fire rated, with Greenwich trim in right hand. The Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad for Adams Rite deadlatches. The Corbin Russwin ML20932 instead runs on power to the frame and is UL/cUL listed for fire doors rated up to and including 3 hours, with the same Fail Safe or Fail Secure behavior the fire and egress plan is built around.
20) Will a Baldwin 6301 or 6310 mortise lock body work in the same door prep as the Corbin Russwin ML20932?
No. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies are 2-1/2 inch backset, while the Corbin Russwin ML20932 is a 2-3/4 inch backset mortise lock. The Baldwin bodies are also mechanical, whereas the ML20932 is electrified for Fail Safe or Fail Secure operation. The Baldwin 6310 covers 1-3/8 inch and over door thickness and the 6301 1-3/4 inch and over; the ML20932 is specified for 1-3/4 inch doors.
21) What trim and finish choices come with the LS Lustra lever version?
The LS Lustra cast lever is offered in 626 satin chrome, with a choice of A rose or N escutcheon trim. Trim is thru-bolted for alignment and security. Status indicator options for locked/unlocked visibility exist on sectional and escutcheon trim in the ML2000 Series, and the series also offers other trim designs including Museo, Vineyard and Behavioral Health (BHSS/BLSS) if you need to match other openings.
22) Is there an electric latch retraction option for the ML20900 series?
Motorized Electric Latch Retraction (MELR) is available for the ML20900 series. That is what you use when the latch itself has to pull back for push-pull operation or automatic operator sequencing, rather than just releasing the outside lever the way the standard electrified function does.
How fast can I get the Corbin Russwin ML20932-LSA-626-SAF delivered?
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Can I return it if it doesn’t work for me?
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Does the Corbin Russwin ML20932-LSA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20932-LSA-626-SAF 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 ML20932-LSA-626-SAF?
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