Corbin Russwin ML20932 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,163.23
$1,265.62
Corbin Russwin ML20932 Double Cylinder, Both Grips Lock, Mortise Electrified Lever Lockset, DS-Dirke Lever

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

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Model: ML20932-DSA-626-RH-SAF
From the ML2000 Series Collection
$2,163.23
$1,265.62
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Corbin Russwin ML20932-DS Mortise Electrified Lever Lockset, Double Cylinder Both Grips Lock with Dirke Lever, Fail Safe/Fail Secure

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

The Corbin Russwin ML20932-DS is a heavy-duty mortise electrified lever lockset from the ML2000 Series, engineered for high-traffic, abusive commercial environments where both security and access control integration are essential. This double cylinder, both-grips-lock configuration features the DS Dirke lever design and supports both Fail Safe (SAF) and Fail Secure (SEC) operational modes, making it adaptable to a wide range of access control applications. Constructed of heavy-gauge steel, the lockset accommodates standard door thicknesses of 1-3/4" (with a range from 1-3/8" minimum to 4" maximum) and a standard backset of 2-3/4", fitting wood, hollow metal, and bullet-resistant doors. The ML2000 Series meets ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1 requirements and carries UL listing and UL10C compliance, including a 3-hour fire door rating.

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 from heavy-gauge steel and engineered to far exceed ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1 requirements, ensuring durability and longevity in the most demanding commercial environments. The ML20932-DS carries UL listing, UL10C compliance, ADA compliance, ASTM E330 certification, Florida Building Code Windstorm Certification, CAL FIRE listing, and a UL-cUL fire door rating up to and including 3 hours, backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty. With EcoFlex® technology delivering up to 89% energy savings and Motorized Electric Latch Retraction completing in ½ second, Corbin Russwin delivers professional-grade reliability and efficiency for access control applications where dependable 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-DSA-626-RH-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 as separate options, and the choice is made at order time, not in the field. Fail Safe (SAF) unlocks when power drops, which is what you want on an egress path or a stair door tied to fire alarm release. Fail Secure (SEC) stays locked when power drops, which suits a perimeter or storeroom-type opening where you want the door secure during an outage. The lock is listed as Fail Safe/Fail Secure at the family level, so confirm which mode the access control drawing calls for before you place the order.
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. The ML20932 is built for 1-3/4 inch doors with a 2-3/4 inch backset, and the description notes optional thicknesses are available from 1-3/8 inch up to 4 inch. It mortises into wood, hollow metal, and bullet-resistant doors. Lock case is heavy-gauge steel at 5-7/8 x 4 x 15/16 inches with an 8 x 1-1/4 inch armored front.
3) Do I have to order the ML20932 handed, or can I flip it on site?
Handing is specified when ordering (left-hand and right-hand are both offered), but the latchbolt is a patented Quick Reversible design, so it can be re-handed in the field without opening the lock case. Practically, that means a wrong-hand delivery on a job is not a return, and an installer carrying one lock can cover either swing.
4) Will the ML20932 latch into the ANSI strike already cut into my frame?
If the frame has a standard ANSI mortise strike prep, yes. The standard strike shipped is wrought brass, bronze, or stainless with an ANSI straight lip, 4-7/8 x 1-1/4 inches and 1-1/8 inch lip to center. The two-piece anti-friction latchbolt throws 3/4 inch (19mm), the auxiliary deadlocking latch has a 9/16 inch effective throw, and the one-piece stainless deadbolt throws a full 1 inch, so the strike box has to be deep enough for the deadbolt as well as the latch.
5) What keying choices do I have, and can I keep my existing Corbin Russwin key system?
Four keying paths are offered: a C 6-pin cylinder in L4 keyway, IC 6-pin less core (for interchangeable core systems where your own cores go in), L4 keyway, or less cylinder entirely. Standard cylinders are brass, 6-pin L4, 0-bitted. The lock works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so a locksmith standardizing a building on a different brand's core can order less cylinder and fit their own.
6) Is this mortise lock approved for a 3-hour fire door?
Yes. The ML20932 is UL and cUL listed with UL10C positive pressure compliance and is rated for fire doors up to and including 3 hours, covering single doors to 4 ft x 10 ft and pairs to 8 ft x 10 ft. It also meets ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, ADA A117.1, California State Fire Marshal listing, and windstorm/hurricane certification, which is the paperwork set an institutional or government spec usually asks for.
7) What is the closest cross-brand equivalent to the Corbin Russwin ML20932-DS electrified mortise lockset?
The nearest like-for-like is the Schlage L9092EU electrified mortise lock in 03A trim, 626 finish, which is a heavy duty mortise lock for 1-3/4 inch doors with an electrically controlled outside lever, keyed outside, request-to-exit switch, and 12/24VDC operation. The ML20932-DS is likewise a Grade 1 mortise electrified lockset on a 2-3/4 inch backset for 1-3/4 inch doors, offered in Fail Safe and Fail Secure builds with optional request-to-exit monitoring. The main differences are trim family and the ML20932's double cylinder, both-grips-lock configuration versus the Schlage corridor function.
8) I need an electrified mortise lock where the fail safe or fail secure mode can be changed in the field. What are my options?
The Command Access ML19092-M motorized mortise lock is field selectable between EL and EU operation and runs on 24VDC, with a heavy-duty storeroom function. The Corbin Russwin ML20932-DS is ordered as a specific Fail Safe or Fail Secure build rather than switched in the field, so confirm the mode before ordering. The ML20932-DS does carry field reversible handing, so the hand is not locked in the same way.
9) We have no access control panel or wiring at the opening. What mortise lock should we use instead of the ML20932-DS?
The ML20932-DS is a wired electrified lockset offered in Fail Safe and Fail Secure builds, so it expects a power supply and controller at the door. Where there is no wiring, a standalone keypad mortise lock such as the Alarm Lock DL3500CR Trilogy Grade 1 with 300 user codes and classroom function, or the BEST 45HZ EZ Series electronic keypad mortise lock with key override, handles credentialed access at the leaf itself. For wireless network control, the Alarm Lock DL1300NW Trilogy Networx wireless electronic mortise lock is built for Adams Rite deadlatches.
10) What looks like an alternative to the ML20932-DS but will not do the same job?
Several mortise products sit near it and do not replace an electrified lockset. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset with no lever operation. The Sargent 130KB and 130W are mortise thumbturns only. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock, and the Schlage L0170 is half dummy trim. None of these accept access control power the way the ML20932-DS Fail Safe and Fail Secure builds do.
11) The opening does not need access control, just a keyed mortise lock. What is a simpler alternative to the ML20932-DS?
For a purely mechanical Grade 1 mortise on a 1-3/4 inch door, the Accentra 8805FL is a Grade 1 storeroom mortise lock with Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option. If the function needs to be office or classroom instead, the Cal-Royal NM8050 is Grade 1 entrance/office and the NM8070 is Grade 1 classroom, both for 1-3/4 inch doors. The ML20932-DS reserves its electrified Fail Safe and Fail Secure operation for openings tied into an access control system.
12) What does double cylinder both grips lock actually mean on the ML20932?
Cylinders on both sides, and both levers lock. Key from either face controls the lock, so neither lever gives free entry until it is keyed or the electrified function releases it. It is the configuration used where you need to control passage in both directions, for example a vestibule or a secured corridor between two tenant areas. If you instead want free egress from the inside at all times, this is not the function to pick.
13) Can I get request-to-exit signalling with this Corbin Russwin electrified mortise lock?
Request to Exit monitoring is an option on the ML20932, ordered yes or no. Specify Yes when the access control system needs to know the inside lever was operated, which is typical where a door contact and REX input are used to suppress a forced-door alarm. Ordering No leaves you a straight electrified lock with no monitoring output.
14) What trim do I need to pick, and does the escutcheon choice change the prep?
Trim is part of the order. You choose the rose/escutcheon style (A rose, M escutcheon, or N escutcheon) with the DS Dirke cast lever, in either 625 bright chrome or 626 satin chrome. Escutcheon trim covers more of the door face and is what you want where a status indicator is used; rose trim is the minimal look. Trim is thru-bolted for alignment. Spacing to plan for: center to center lever to cylinder is 3-5/8 inches, and lever to thumbturn is 2-7/16 inches.
15) Is an electrified mortise lock the right choice, or should I use a standalone electronic lock instead?
The ML20932 is a wired electrified mortise lock: it has no keypad or reader of its own and depends on a power supply and an access control system to switch it. Pick it when a panel, card reader, or fire alarm interface already exists and you want the lock to follow it. If there is no wiring to the door and no head-end, a standalone unit is the easier route, for example the Schlage CO-100 keypad mortise lock or a TownSteel FME-2000 Grade 1 RFID mortise lockset. For a wired alternative from another brand, the Schlage L9092EU with RX is also a heavy duty electrified mortise lock for 1-3/4 inch doors at 12/24VDC.
16) Is the ML20932 durable enough for a high-traffic entrance in an apartment building or school?
It is built for exactly that. Heavy-gauge steel lock case, one-piece stainless deadbolt, and UL cycle testing at 14.5 million cycles (Verification ID V875753), well past the Grade 1 minimum under ANSI/BHMA A156.13 Series 1000. The anti-friction two-piece latchbolt also reduces the force needed to close the door, which matters on a door with a closer that residents complain about.
17) If I do not need access control on the door, what non-electrified Grade 1 mortise lock should I use instead?
Skip the electrified version, because you would be paying for wiring and a power supply you never connect. For a mechanical Grade 1 mortise lock of the same class, options include the Accentra 8805FL storeroom lock in the 8800 Series, the Cal-Royal NM8080 storeroom or NM8070 classroom lockset (both for 1-3/4 inch doors), the Sargent 7925 dormitory/corridor lock, or the Falcon MA101 passage lock. Choose by function first, then match finish and lever to the rest of the building.
18) I need a mortise deadbolt only, not a lockset with levers. Is this the right part?
No. The ML20932 is a full electrified lever lockset with latch, auxiliary latch, deadbolt, and trim on both faces. For deadbolt only, look at the Sargent 4874 double cylinder mortise deadbolt with a 2-3/4 inch backset, the Kaba Ilco 185 Series mortise deadbolt, or the Alarm Lock DL4500 Series electronic mortise deadbolt if you want keypad control.
19) Is the BEST 45HW a substitute for the Corbin Russwin ML20932-DS?
The BEST 45HW is a wired electromechanical mortise lock rated heavy duty with 12V/24V operation, so it covers the same wired access control role as the ML20932-DS, which is a Grade 1 electrified mortise lockset in Fail Safe and Fail Secure builds. Trim, keyway, and function coding differ between the two families, so verify the function and cylinder arrangement against the opening. The ML20932-DS ships with a 6-pin L4 keyway cylinder option or less-cylinder and IC less-core builds.
20) We want credential readers at the door rather than a wired electrified lock. What mortise locks should we look at instead of the ML20932-DS?
For reader-at-the-door openings, the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader and mobile-enabled deadbolt with LED in Greenwich trim, right hand, with a 3 hour fire rating. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors, and the Dormakaba Saffire LX-I-M002 is an RFID mortise lockset with BLE mobile access at BHMA Grade 2. The ML20932-DS instead takes its unlock signal from a panel through its Fail Safe or Fail Secure wiring, with optional request-to-exit monitoring.
21) Our door is a behavioral health room. Is the ML20932-DS the right mortise lock, or is there a better fit?
For anti-ligature openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty 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. The ML20932-DS uses the DS Dirke cast lever and is built for electrified access control rather than ligature resistance.
22) Will the ML20932-DS fit a 1-5/8 inch door, and what mortise lock covers thinner doors?
The ML20932-DS is specified at 1-3/4 inch door thickness. If the leaf falls between 1-5/8 and 1-7/8 inch, the Alarm Lock Trilogy electronic mortise locks are listed for that range, including the DL2700CR Grade 1 classroom weatherproof model and the DL3500CR Grade 1 classroom model, with the DL4500 Grade 1 electronic mortise deadbolt covering the same thickness range where a deadbolt is wanted.
23) Can I order just a mortise lock body instead of a complete ML20932-DS lockset?
Yes. The BEST 45H Series heavy duty mortise lock body is sold as a body in public entrance function with field reversible operation, and the 45HCA heavy duty mortise lockbody is offered in intruder function. The Baldwin 6301 and 6310 are also mortise lock bodies, on a 2-1/2 inch backset, in entrance/apartment and entrance/storeroom functions. The ML20932-DS is supplied as a complete electrified lockset with DS Dirke lever trim on a 2-3/4 inch backset.
24) What is the difference between the ML20932-DS and the Dormakaba E-Plex 5086 for a back-to-back controlled opening?
The Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card mortise lock in a back-to-back configuration, so credentials are presented at the lock on both sides. The ML20932-DS is a double cylinder both-grips-lock electrified mortise lockset in Fail Safe and Fail Secure builds, keyed on both sides and switched by the access control system rather than by an onboard keypad or card reader.
25) Can the ML20932 be changed to a different lock function later if the use of the room changes?
The ML2000 platform is multi-function: 12 functions are configurable from a single ML2054 lockbody. That is why facilities standardize on it, since one lock body on the shelf can cover several openings. Note that the ML20932 as ordered is the double cylinder, both grips lock configuration, so any function change is a reconfiguration of the lock body, not a setting on the trim.
26) Does this Corbin Russwin lock offer a locked/unlocked status indicator?
Status indicator options are available in the ML2000 Series on sectional and escutcheon trim, so if you need visible locked/unlocked confirmation, order escutcheon trim (M or N) rather than the A rose. Indicators are commonly required on classroom and restroom doors where occupants need to see the lock state without trying the lever.
27) We need a battery-independent electronic mortise lock at a remote door. Is there an alternative to the ML20932-DS?
The Dormakaba PowerPlex P2066 Series mortise lock is the option in that role, since the ML20932-DS is a wired electrified lockset that depends on power at the door in either its Fail Safe or Fail Secure build. If the door is served by a standalone keypad instead, the Dormakaba E-Plex 2066 electronic pushbutton keyless mortise lock is a wide stile unit.
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Can I return it if it doesn’t work for me?
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Does the Corbin Russwin ML20932-DSA-626-RH-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20932-DSA-626-RH-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-DSA-626-RH-SAF?
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