Corbin Russwin ML20932 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,042.47
$755.45
Corbin Russwin ML20932 Fail Safe Electrified Mortise Lock, Both Grips Locked when Not Energized, Double Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20932 Grade 1 Fail Safe 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-SAF
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,042.47
$755.45
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Corbin Russwin ML20932-LL-SAF Fail Safe 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-SAF is a fail safe electrified mortise lock body from the ML2000 Series, engineered to deliver life safety and access control in a single door preparation. Designed for 1-3/4" (44mm) standard door thickness, this lock body features a latchbolt operable by grip from either side unless both grips are locked by energizing the lock, with latchbolt by key inside or outside when the lock is energized. The auxiliary latch deadlocks the latchbolt for added security. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and Corbin Russwin's patented Quick Reversible latchbolt, the ML20932 is rated Grade 1 and has completed UL Cycle testing at 14.5 Million Cycles (Verification ID: V875753), making it an ideal solution for commercial, institutional, industrial, and government environments.

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
  • Institutional and High-Security Applications

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper resistant screws, providing a formidable barrier against abuse and unauthorized access. When paired with Corbin Russwin's patented high-security Pyramid or Access 3® cylinders, the ML20932 delivers an elevated level of physical security for demanding environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lock bodies are built to the highest commercial standards, constructed of heavy-gauge steel with a 1" stainless steel deadbolt and verified through UL Cycle testing at 14.5 Million Cycles (Verification ID: V875753) for unmatched long-term reliability. The ML20932-LL-SAF is backed by a 10 Year Limited warranty, reflecting Corbin Russwin's commitment to quality and durability. Engineered for demanding commercial, institutional, industrial, and government applications where dependable fail safe performance and life safety 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 Safe
Product Attribute:
Mortise Locks
Electronic:
No
AMP Draw:
500mA Peak, 15mA Holding
Product Model:
ML20906
Collection:
ML2000_Series
Product Function:
Fail Safe
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-SAF – Frequently Asked Questions

1) What happens to the Corbin Russwin ML20932 when the power drops?
It unlocks. The ML20932 is a fail safe electrified mortise lock: both grips are locked only while the lock is energized, so a power loss releases both levers and the door is free-egress and free-entry from either side. If you need the opposite behavior (locked on power loss), a fail safe device is the wrong choice for that opening.
2) What current does the ML20932 electrified mortise lock draw, and what power supply do I need?
Peak draw is 500mA with a 15mA holding current. Because it's fail safe, it's energized continuously to stay locked, so size the supply for the holding load across every lock on the circuit plus enough headroom for simultaneous 500mA inrush when locks re-energize after a fire alarm release.
3) Will the Corbin Russwin ML20932 fit a 1-3/4 inch commercial door with a 2-3/4 inch backset prep?
Yes. The ML20932 is built for 1-3/4 inch (44mm) door thickness with a 2-3/4 inch (70mm) backset, which is the standard commercial mortise prep. The lockcase measures 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so it drops into a standard ANSI mortise pocket. Other door thicknesses are available as an option.
4) Do I have to order the ML20932 handed, or can I reverse it in the field?
It ships handed but it's field reversible. The patented Quick Reversible latchbolt lets you change hand without opening the lock case, so a lock that arrives wrong for the opening is still usable on the job.
5) Will the ML20932 latch into the strike already in my frame?
The latchbolt has a 3/4 inch (19mm) throw and the standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame carries that ANSI strike, it will latch. The deadbolt throws a full 1 inch from one-piece stainless steel, so the frame also needs the deadbolt pocket depth, and a 9/16 inch auxiliary latch deadlocks the latchbolt against carding.
6) Does the ML20932 come with levers, trim and cylinders, or is it just the lock body?
Body only. The ML20932-LL-SAF is the mortise lockbody by itself, so you order lever trim, roses or escutcheons, and cylinders separately. It's a lever x lever double cylinder override function, which means two cylinders for the key override, and the levers are thru-bolted trim designs for alignment and security. Trim families include Museo, Vineyard, and Behavioral Health (BHSS/BLSS), with status indicator options on sectional and escutcheon trim.
7) Can I use the ML20932 with cylinders I already stock, or do I have to buy Corbin Russwin?
Both work. The ML20932 runs on new or existing Corbin Russwin key systems and also accepts most other manufacturers' cylinders. The standard Corbin Russwin cylinder is brass, 6-pin, L4 keyway, 0-bitted. For high security openings it pairs with the patented Pyramid or Access 3 cylinders.
8) Is the ML20932 approved for a fire rated door opening?
Yes. It's UL/cUL listed and UL10C positive pressure rated for 3-hour fire doors up to 4 x 10 feet single or 8 x 10 feet pair. It also meets ANSI/BHMA A156.13 Series 1000 Grade 1 for both Operational and Security, ADA A117.1, California State Fire Marshal, and Windstorm/Hurricane certification. Note that a fail safe lock on a fire door still has to satisfy your AHJ's rules on releasing locks during alarm.
9) Is there a Grade 1 mortise lock body from another manufacturer that can replace the Corbin Russwin ML20932 on a non-electrified opening?
The Accentra 8800FL Series mortise lock body is a Grade 1 mortise lock body with field reversible handing, and it is the closest peer for a mechanical-only opening. The difference is electrification: the ML20932 is a fail safe electrified body drawing 500mA peak and 15mA holding, where both grips lock when the lock is energized and the latchbolt is retracted by key inside or outside. The 8800FL body carries no power and is purely mechanical, so it suits an opening where the lock is not tied into an access control system. Both are field reversible for handing.
10) Will an Accentra 8800FL mortise body work as a drop-in for a Corbin Russwin ML20932 that has failed?
Treat it as a different product rather than a drop-in. The Accentra 8800FL Series is a Grade 1 mortise lock body, but the Corbin Russwin ML20932 is an electrified body that carries wiring and draws 500mA peak with 15mA holding current. Swapping in a mechanical body leaves the access control wiring in the door with nothing to land on, and the fail safe behavior the opening was designed around goes away. If the opening must keep releasing on power loss, replace it with another ML20932 rather than a mechanical body.
11) Should I add Request to Exit monitoring to the ML20932, or skip it?
Request to Exit is an ordering option on the ML20932, available with or without on every finish offered. Add it when the access control system needs to know the inside lever was turned, typically to shunt a door alarm on legitimate egress. Skip it on openings where the door position switch and card reader carry all the monitoring you need.
12) How durable is the ML20932 for a high traffic entrance like a school or hospital corridor?
It has completed UL Cycle testing at 14.5 million cycles (Verification ID V875753), well past the Grade 1 minimum, on a heavy-gauge steel lockcase. The two-piece anti-friction latchbolt also cuts the force needed to close the door, which matters on doors with closers and heavy traffic. For openings that take abuse, the ML2000VR vandal resistant option adds stainless escutcheons with tapered edges and Torx pin tamper resistant screws.
13) I need electric latch retraction on a Corbin Russwin mortise lock. Does the ML20932 do that?
No. The ML20932 locks and unlocks the grips electrically, it does not retract the latch. Motorized Electric Latch Retraction (MELR) is offered on the ML20900 series, so specify a MELR configuration if the opening needs the latch pulled back for hands-free or automatic operator use.
14) How far apart are the lever and cylinder holes on the ML2000 trim prep?
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). Check those against an existing door prep before you plan a swap, because a mismatch means new escutcheon holes, not just a lock change.
15) What finishes can I get the ML20932 in to match the rest of my building?
Fourteen finishes: 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 Steel, 630 Satin Stainless Steel, 722 Black Oxidized Bronze Oil-Rubbed, and BSP Black Suede Powder Coat. 626 and 630 are the usual commercial defaults if you're standardizing a facility.
16) Can one ML2000 mortise body cover several lock functions so I can cut down what I stock?
On the mechanical side, yes. The ML2054 multi-function lockbody is configurable to 12 different functions from a single body, which is how a facility standardizes spares. The ML20932 itself is a fixed fail safe electrified function with double cylinder override, so it's specified per opening rather than reconfigured.
How fast can I get the Corbin Russwin ML20932-LL-626-SAF delivered?
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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-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20932-LL-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-LL-626-SAF?
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