Corbin Russwin ML20932 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,042.47
$604.36
Corbin Russwin ML20932 Fail Secure Electrified Mortise Lock, Both Grips Locked when Not Energized, Double Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20932 Grade 1 Fail Secure Electrified Mortise Lock, Both Grips Locked when Not Energized, Double Cylinder Override, Lever x Lever Body Only

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Model: ML20932-LL-626-SEC
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,042.47
$604.36
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Corbin Russwin ML20932-LL Fail Secure Electrified Mortise Lock Body with Double Cylinder Override, Lever x Lever

Grade 1 Electrified Mortise Lock Body for High-Traffic Commercial Applications

The Corbin Russwin ML20932-LL is a Grade 1 fail secure electrified mortise lock body from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. In fail secure operation, both grips are locked when the lock is not energized, and the latchbolt is operable by grip from either side only when the lock is energized; the latchbolt remains operable by key inside or outside when not energized, and an auxiliary latch deadlocks the latchbolt for added security. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, this lock body is designed for 1-3/4" (44mm) standard door thickness and features field-reversible handing. The included ANSI straight lip strike measures 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center, and the unit draws 500mA peak and 15mA holding current.

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
  • Educational Facilities and Schools
  • Healthcare Institutions and Hospitals
  • Hotels and Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • High-Security Access Control Environments

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series variant features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a formidable barrier against abuse and unauthorized manipulation. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door can be transformed into a robust security barrier against intruders.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lock bodies deliver professional-grade reliability with heavy-gauge steel construction, a 1" stainless steel deadbolt, and UL cycle testing verified at 14.5 million cycles (Verification ID: V875753), far exceeding standard durability benchmarks. Backed by a 10 Year Limited warranty and featuring the patented Quick Reversible latchbolt, the ML20932-LL is engineered for the most demanding commercial applications where dependable fail secure performance and long-term reliability are essential.

Manufacturer Resources

Key Systems Catalog

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Standard Latch:
3/4" Latchbolt
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
Product Subgroup:
Mortise Lock Bodies
Product Type:
Mortise Lockbody Only
Commercial/Residential:
Commercial
Function Description:
Mortise Lockbody Only
Lock Type:
Mortise
Lock Function:
Fail Secure
Product Attribute:
Mortise Locks
Electronic:
No
AMP Draw:
500mA Peak, 15mA Holding
Product Model:
ML20932
Collection:
ML2000_Series
Product Function:
Fail Secure
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Substrate:
Brass or Bronze
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin ML20932-LL-626-SEC – Frequently Asked Questions

1) What happens to the Corbin Russwin ML20932 mortise lock when the power drops?
It locks. The ML20932 is a fail secure function: with no power, both lever grips are locked, so the door stays secured on a power loss. The latchbolt is still retractable by key from either side when de-energized (double cylinder override), and the grips only operate the latchbolt while the lock is energized. If your opening is an egress path that has to free-wheel on power loss, this is the wrong function and you want a fail safe body instead.
2) Will the ML20932 mortise lock fit a 1-3/8 inch door?
No. The ML20932 lock body is built for 1-3/4 inch (44mm) door thickness, which is the standard commercial leaf. Corbin Russwin offers optional thicknesses on the ML2000 Series, but that is a specified option, not something the standard body covers. For a 1-3/8 inch wood door you would be specifying a different preparation.
3) What backset and pocket size do I need to mortise for a Corbin Russwin ML2000 lock body?
Plan for a 2-3/4 inch (70mm) backset and a lockcase pocket sized to 5-7/8 x 4 x 15/16 inches. The armored front is 8 x 1-1/4 inches. Center to center, lever to cylinder is 3-5/8 inches and lever to thumbturn is 2-7/16 inches, so a door already prepped to the ANSI mortise standard for Corbin Russwin ML2000 takes it without rework.
4) Will this lock latch into the strike already in my frame?
The latchbolt throws 3/4 inch (19mm) and the deadbolt throws 1 inch, and the lock ships against an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with a 1-1/8 inch lip to center. If your frame carries a standard ANSI mortise strike cutout at that size, it drops in. A frame with a non-ANSI or shallow-lip strike needs the supplied strike installed instead, and the 9/16 inch auxiliary latchbolt has to land on the strike face to deadlock the main latch.
5) What current does the ML20932 electrified mortise lock draw for sizing a power supply?
500mA peak inrush and 15mA holding. Size the supply and wire run for the 500mA peak, not the holding figure, and budget that per leaf if you are putting several electrified mortise bodies on one supply.
6) Can I get request-to-exit monitoring on this electrified mortise lock?
Yes, RX is an ordering option on the ML20932 and you pick it at the time of order, with or without. The RX switch signals the access control panel when the inside lever is turned, so a valid egress does not read as a forced door. Specify it up front; it is a factory option in the body, not something added later.
7) What is included with the ML20932, and what else do I need to order to finish the door?
This is a lock body only. You get the electrified mortise case with strike; levers, roses or escutcheons, and cylinders are separate. Plan on lever x lever trim, two cylinders for the double cylinder override, a power transfer hinge or electric door loop to get power into the leaf, and a power supply rated for the 500mA peak draw.
8) Can I key this Corbin Russwin mortise lock into my existing master key system?
Yes. The ML2000 body works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so a building already keyed on another brand can usually carry over. Standard cylinder is brass, 6-pin, L4 keyway, supplied 0-bitted for the locksmith to key on site.
9) Is the ML20932 approved for a fire rated opening?
Yes. The ML2000 mortise lock is UL/cUL listed and UL10C positive pressure rated, good for a 3-hour fire door up to 4 x 10 feet single or 8 x 10 feet in a pair. It also carries ANSI/BHMA A156.13 Series 1000 Grade 1 for both operational and security, ADA A117.1, California State Fire Marshal listing, and windstorm/hurricane certification.
10) What is a comparable Grade 1 mortise lock body if I do not need an electrified function?
The Accentra 8800FL Series mortise lock body is a Grade 1 mortise lock body with field reversible handing, which covers a straight mechanical opening. The Corbin Russwin ML20932 is a Grade 1 fail secure electrified mortise lock body: both grips are locked when the lock is not energized and the latchbolt is operable by grip from either side only when the lock is energized, drawing 500mA peak and 15mA holding. If the door has no power run to it and no access control tie-in, the mechanical 8800FL body is the one that suits; if the opening is controlled by a card reader or release, the electrified ML20932 is required.
11) I need request-to-exit signalling at the door - does the Accentra 8800FL body cover that?
The Accentra 8800FL Series is a Grade 1 mortise lock body with field reversible handing and is the mechanical choice. When the access control system needs to see the door, the Corbin Russwin ML20932 fail secure electrified body is offered both with and without request to exit monitoring, so the monitoring is specified on the body itself rather than added as separate door hardware.
12) Is this mortise lock durable enough for a school or hospital corridor?
It is built for that traffic. Heavy-gauge steel lockcase, one-piece stainless deadbolt, and UL cycle verification at 14.5 million cycles (Verification ID V875753), well past the Grade 1 minimum. The two-piece anti-friction latchbolt also reduces closing force, which matters on a closer-equipped corridor door that gets slammed all day.
13) Is the ML20932 a standalone electronic lock or does it need an access control system?
It is not a standalone electronic lock, there is no reader, keypad or credential logic in it. The body is an electrified mechanical mortise lock that takes a 12 or 24V feed from your access control system to release the levers. Without a panel or at minimum a switched power supply, the door behaves as key-only from both sides.
14) Do I have to order handed on a Corbin Russwin ML20932, or can it be reversed in the field like the Accentra 8800FL body?
Both bodies reverse in the field. The Corbin Russwin ML20932 is field reversible, using a patented Quick Reversible latchbolt that re-hands without disassembling the lock case, and the Accentra 8800FL Series mortise lock body is likewise offered with field reversible handing. For a property manager stocking spares across a building, either body can be carried without splitting inventory by hand.
15) Will an Accentra 8800FL mortise body drop into the same prep as the Corbin Russwin ML20932?
Both are Grade 1 mortise lock bodies that mortise into a standard ANSI mortise pocket, but they are not interchangeable parts. The ML20932 is a 2-3/4 inch backset body for 1-3/4 inch doors with a heavy-gauge steel lockcase measuring 5-7/8 inch x 4 inch x 15/16 inch, and it is electrified, so the door also needs a power transfer and wire run that a mechanical body does not use. Confirm the existing pocket depth, armored front cutout, and trim spacing before swapping between manufacturers, and expect to change the trim and cylinder along with the body.
16) What finishes does the ML20932 mortise lock come in?
Fifteen: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 613E dark oxidized satin bronze equivalent, 618 bright nickel, 619 satin nickel, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless, 722 black oxidized bronze oil-rubbed, and BSP black suede powder coat. 626 and 630 are the usual commercial defaults if you are matching existing hardware in an office or institutional building.
How fast can I get the Corbin Russwin ML20932-LL-626-SEC delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Corbin Russwin ML20932-LL-626-SEC come with a warranty?
Absolutely. The Corbin Russwin ML20932-LL-626-SEC 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-LL-626-SEC?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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