Corbin Russwin ML20915 Grade 1...
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$1,838.27
$1,077.40
Corbin Russwin ML20915 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, PS-Princeton (Cast) Lever

Corbin Russwin ML20915 Grade 1 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, PS-Princeton (Cast) Lever

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Model: ML20915-PSA-626-SAF
From the ML2000 Series Collection
$1,838.27
$1,077.40
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$1,077.40
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Corbin Russwin ML20915-PS Mortise Electrified Lever Lockset, No Cylinder Override, Both Grips Lock, Princeton Cast Lever

ANSI/BHMA Grade 1 Electrified Mortise Lockset for High-Traffic Commercial Applications

The Corbin Russwin ML20915-PS Mortise Electrified Lever Lockset is a heavy-gauge steel, ANSI/BHMA A156.13 Series 1000 Grade 1 electrified mortise lock from the ML2000 Series, engineered for demanding high-traffic and abusive environments. Featuring the Princeton (Cast) lever design and a No Cylinder Override, Both Grips Lock function, this lockset operates in SAF mode — where the latchbolt is operated by grip from either side unless both grips are locked by energizing the lock — and in SEC mode, where the latchbolt is operable only when the lock is energized and both grips remain locked when de-energized. Designed for doors with a standard thickness of 1-3/4" (range: 1-3/8" to 4") and a standard backset of 2-3/4" (range: 2-3/8" to 2-3/4"), it is UL listed, UL10c compliant, ADA compliant, and rated for fire doors up to and including 3-hour ratings.

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
  • Educational Facilities
  • Government and Municipal Buildings
  • Behavioral Health and Secure Care Facilities
  • Retail Establishments
  • Industrial and Warehouse Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locksets are constructed of heavy-gauge steel and certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 — far exceeding standard requirements for durability and longevity in high-traffic, abusive environments. The ML20915-PS is backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, with UL listing, UL10c compliance, ADA compliance, and fire door ratings up to and including 3-hours. Engineered with EcoFlex® technology for up to 89% energy savings and MELR latch retraction in ½ second, this lockset delivers professional-grade reliability for demanding commercial access control applications.

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:
ML20914
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 ML20915-PSA-626-SAF – Frequently Asked Questions

1) What is the difference between the Fail Safe and Fail Secure versions of the Corbin Russwin ML20915 electrified mortise lock?
Both versions are ordered off the same ML20915 body, and the choice decides what happens when power drops. In fail safe (SAF) mode the latchbolt works from either grip unless you energize the lock, which locks both grips. In fail secure (SEC) mode the latchbolt is only operable while the lock is energized, and both grips stay locked when de-energized. Fail safe is the usual pick on egress-path openings where a power loss has to leave the door operable; fail secure suits an opening that must stay locked through an outage. Pick the function on the order, since it is a hard option on the lock, not a field setting.
2) Will the Corbin Russwin ML20915 fit a standard 1-3/4 inch commercial door with a 2-3/4 inch backset?
Yes. The ML20915 mortise lockset is built for 1-3/4 inch doors with a 2-3/4 inch backset, which is the standard commercial prep. Optional thicknesses are covered by the ML2000 body, with the published range running 1-3/8 inch to 4 inch and backsets from 2-3/8 to 2-3/4 inch. The lockcase itself measures 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so an existing ANSI mortise pocket takes it directly.
3) Does the ML20915 have a key override if the power fails?
No. The ML20915 is the no cylinder override, both grips lock function, so there is no mechanical key bypass of the electrified condition. If your opening needs a keyed override on power loss or during a lockdown, this is the wrong function code and you should specify a different ML20900 function.
4) Will the ML20915 latch into an existing ANSI mortise strike?
It should. The lock ships with a wrought brass, bronze or stainless ANSI straight lip strike, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, and the two-piece anti-friction latchbolt throws 3/4 inch with a 9/16 inch deadlocking auxiliary latch. The one-piece stainless deadbolt throws 1 inch. If the frame already carries a standard ANSI strike with that same lip-to-center dimension, the latch and bolt line up.
5) Can I use the ML20915 on a fire-rated door?
Yes. The ML2000 electrified mortise lock is UL and cUL listed with UL10C positive pressure, rated for fire doors up to and including 3 hours, on single doors up to 4 ft x 10 ft and pairs up to 8 ft x 10 ft. It also meets ADA A117.1, and carries California State Fire Marshal and windstorm/hurricane certification, which covers most healthcare, school and government spec language.
6) What do I have to specify when ordering the ML20915-PS?
Four things beyond the model. Function (fail safe or fail secure), request-to-exit monitoring (with or without), and the trim style: A or B rose, or M or N escutcheon. The lever is the PS Princeton cast design and the finish is 626 satin chrome. Order the RX version if your access control panel needs to see a valid egress and suppress a door-forced alarm.
7) What is the closest cross-brand equivalent to the Corbin Russwin ML20915-PS electrified mortise lock with request-to-exit monitoring?
The Schlage L9092EU with 03A trim is the nearest peer: it is a heavy-duty electric lock/unlock outside lever mortise lock, keyed outside, with Request to Exit (RX) monitoring on 12/24VDC for 1-3/4 inch doors. The ML20915-PS is an electrified mortise lockset with a Fail Safe/Fail Secure function for 1-3/4 inch doors, and request-to-exit monitoring can be specified or omitted. The Schlage is a corridor function with a keyed outside lever, while the ML20915 is the no-cylinder-override, both-grips-lock configuration, so electrical behavior is similar but the mechanical override differs.
8) I need a wired electrified mortise lock but my access control panel is 12V or 24V - what are my options besides the Corbin Russwin ML20915?
The BEST 45HW wired electromechanical mortise lock is built for 12V/24V operation and is a heavy-duty mortise body. Command Access ML190 is another route: it is a heavy-duty motorized mortise lock with field-selectable EL/EU operation on 24VDC, so one part covers fail safe or fail secure by setting a switch. The Corbin Russwin ML20915-PS is ordered as either Fail Safe or Fail Secure rather than field-selected, and its function is the no-cylinder-override, both-grips-lock configuration.
9) The opening has no access control wiring - what standalone mortise lock can I use instead of the electrified Corbin Russwin ML20915?
Standalone keypad and credential mortise locks avoid running power to the door. The Alarm Lock DL3500CR Trilogy is a Grade 1 electronic mortise lock with 300 user codes in a classroom function for 1-5/8 to 1-7/8 inch doors, and the Alarm Lock DL2700CR Trilogy T2 is a Grade 1 classroom-function electronic mortise lock with a weatherproof design over the same thickness range. The BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. Note the Alarm Lock thickness range differs from the 1-3/4 inch door the ML20915-PS is specified for.
10) What is a simpler mechanical Grade 1 mortise lock to use where the Corbin Russwin ML20915 electrified function is more than the door needs?
If the door only needs key control and no electrification, the Accentra 8805FL is a Grade 1 storeroom mortise lock from the 8800 Series with an Arcadia lever, and the Cal-Royal NM8080 is a heavy-duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. Cal-Royal also offers the NM8050 in Grade 1 office/entrance and the NM8070 in Grade 1 classroom, both for 1-3/4 inch doors. All are purely mechanical, where the ML20915-PS is an electrified mortise lockset with a Fail Safe/Fail Secure function.
11) My drawing calls for a 2-3/4 inch backset mortise lock - which comparable locks match that and which do not?
The Corbin Russwin ML20915-PS uses a 2-3/4 inch backset. Among peers, the Hager 3810S passage and 3810E passage with escutcheon, the Hager 3840S privacy and the Hager 3850E office mortise locks are all 2-3/4 inch backset, and the Sargent 4874 is a double cylinder mortise deadbolt at 2-3/4 inch backset. Baldwin's mortise bodies, including the 6301 entry/apartment and 6310 entry/storeroom, are 2-1/2 inch backset, so they will not land on the same door prep.
12) For a behavioral health room, is the Corbin Russwin ML20915-PS the right mortise lock or should I use a ligature resistant model?
For ligature resistant openings, TownSteel offers the MRX-L-01, a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel in passage function, and the MRX-A-01, a Grade 1 heavy duty ligature resistant arch trim mortise lockset in passage function, both for 1-3/4 inch doors. 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 ML20915-PS is supplied with the Princeton cast lever and is the electrified Fail Safe/Fail Secure configuration, so choose it when access control is required and specify a behavioral health trim rather than the standard lever.
13) Is the ML20915 handed, or can I re-hand it on the job?
It is a handed lock, but the ML2000 latchbolt is quick reversible, so the hand can be changed in the field without opening the lock case. That matters if you are stocking one lock for both swings across a building.
14) Does the ML20915 work with keys we already have on other Corbin Russwin doors?
It can. The ML2000 series works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so a property standardizing a building does not have to rekey around it. The standard cylinder is brass, 6-pin L4 keyway, supplied 0-bitted. Note that on the ML20915 the cylinder does not override the electrified locking.
15) How durable is the ML20915 for a high-traffic entrance?
The lockcase is heavy-gauge steel and the lock is certified to ANSI/BHMA A156.13 Series 1000 at Operational and Security Grade 1, the top commercial rating. Corbin Russwin cycle-tested the ML2000 to 14.5 million cycles (verification ID V875753). That is built for main entrances, corridor doors and other openings taking constant traffic.
16) I need an electrified mortise lock but with a key override - what else can I look at?
The ML20915 deliberately has no cylinder override, so if a keyed bypass is required, look at an electrified mortise lock that publishes a keyed outside function. ZenSupply carries the Schlage L9092EU with the 03A trim, an electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC operation for 1-3/4 inch doors. Command Access also offers the ML190 Series motorized mortise lock, storeroom function, with field selectable EL/EU operation on 24VDC.
17) Should I use an electrified mortise lock like the ML20915 or a standalone keypad or credential lock?
Wired electrified mortise locks like the ML20915 tie into a building access control system, so the lock state is controlled and, with the RX option, monitored centrally. That is what you want on a main entrance or a controlled corridor. If the opening only needs local control with no wiring, a standalone unit is the simpler route: ZenSupply carries the Schlage CO-100 standalone electronic mortise lock with keypad reader, the TownSteel FME-2000 Grade 1 RFID mortise lockset, and the BEST 45HZ EZ Series keypad mortise lock with key override. Standalone means running no power or data to the door, at the cost of centralized control.
18) We only need a mechanical Grade 1 mortise lock, not an electrified one. What should we order instead?
An electrified body like the ML20915 is wasted money if the door has no access control. For mechanical Grade 1 mortise locks ZenSupply carries the Accentra 8805FL storeroom lock with Arcadia lever, the Cal-Royal NM8080 storeroom and NM8070 classroom locksets for 1-3/4 inch doors, the Sargent 7925 dormitory exit function lock with rose trim and single cylinder deadbolt, and the Falcon MA101 heavy-duty passage lock. Match the function code to the opening first, then the trim.
19) Which mortise lock should I use if the opening needs credential or mobile access rather than panel-controlled electrification like the Corbin Russwin ML20915?
For credential-read openings, the TownSteel FME-2000 is a Grade 1 heavy-duty classroom mortise lockset with RFID, and the Dormakaba Saffire LX-I-M002 is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2. Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader, mobile enabled, with Greenwich trim, right hand, and a 3-hour fire rating. The Corbin Russwin ML20915-PS instead takes its signal from an access control system as a Fail Safe or Fail Secure electrified lock with no onboard reader.
20) Is the BEST 45HCA mortise lockbody a substitute for the Corbin Russwin ML20915-PS?
No. The BEST 45HCAC is a heavy duty mortise lock body in a public entrance function and the BEST 45HCAINL is a heavy duty mortise lockbody with an intruder function - both are lock bodies, mechanical, and neither carries the electrified Fail Safe/Fail Secure operation of the ML20915-PS. They are also supplied without the Princeton cast lever trim and rose or escutcheon that the ML20915-PS is configured with.
21) What looks like a mortise lockset but will not secure the door the way the Corbin Russwin ML20915 does?
Dummy and passage devices are the common mix-up. The Schlage L0170 is a Grade 1 mortise non-keyed lever half dummy trim, and the Emtek 3102 Memphis, 3104 Hamilton, 3106 Manhattan and 3019 Brisbane are all mortise entrance locksets in dummy function - pull trim with no latching. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock and the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock, both of which latch but never lock. The ML20915-PS locks both grips when energized or de-energized depending on whether Fail Safe or Fail Secure is specified.
22) I need field reversible handing on a mortise lock - which comparable models offer it alongside the Corbin Russwin ML20915-PS?
The ML20915-PS is field reversible. Among peers, the BEST 45H Series heavy duty mortise lock body in public entrance function is field reversible, and the Falcon MA101 Grade 1 heavy-duty mortise passage lock is field reversible as well. By contrast, the Schlage LEMD-GRW ENGAGE wireless mortise lock is supplied right hand, and the Baldwin 6310190RRLS is a right hand reverse mortise lock, so handing has to be called out at the time of order on those.
23) What mortise lock should I use for a dormitory or apartment door where the Corbin Russwin ML20915 electrified function is not wanted?
The Sargent 7925 is a heavy duty Grade 1 dormitory exit function mortise lock from the 7900 Series with rose trim and a single cylinder deadbolt. Baldwin's 6301LS is an entry/apartment mortise lock body, lever by lever, for doors 1-3/4 inch and over, with the 6301 offering the same function knob by knob. Schlage Electronics LEBMB-ADD covers privacy, office and apartment functions as a Grade 2 mobile-enabled mortise lock with push button and LED for 1-3/4 inch doors and a 3-hour fire rating. The ML20915-PS remains the choice when the door must be locked or unlocked from an access control system.
24) Can I get a status indicator or a different lever trim on the ML2000 mortise lock?
The ML2000 family offers a wide range of trim designs including Museo, Vineyard and Behavioral Health (BHSS/BLSS), plus locked/unlocked status indicator options on sectional and escutcheon trim. The ML20915-PS itself is the Princeton cast lever in 626 satin chrome, with A or B rose or M or N escutcheon. All the trim is thru-bolted for alignment and added security.
25) Is a Sargent 130KB thumbturn or Kaba Ilco 185 deadbolt an alternative to the Corbin Russwin ML20915-PS?
No - those are different devices. The Sargent 130KB is a standard duty mortise thumbturn from the 8200 Series and the Sargent 130W is a mortise thumbturn with a round backplate from the 7800 Series; both are trim pieces, not locksets. The Kaba Ilco 185 Series is a mortise deadbolt with no handing and provides no latchbolt or lever operation. The ML20915-PS is a complete electrified mortise lever lockset with a 3/4 inch latchbolt and an ANSI straight lip strike with 1-1/8 inch lip to center.
How fast can I get the Corbin Russwin ML20915-PSA-626-SAF 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 ML20915-PSA-626-SAF come with a warranty?
Absolutely. The Corbin Russwin ML20915-PSA-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 ML20915-PSA-626-SAF?
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
Why buy the Corbin Russwin ML20915-PSA-626-SAF from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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