Skip to main content
ML2055 Classroom Mortise Lever Lock - Motor Drive - Fail Secure Satin Chrome

Roll over image to zoom in

  • Product Features

  • Product Overview

  • Related Videos

  • Reviews

  • Questions & Answers

ACSI M1520M-1-ML2055-RWM-626-LC ML2055 Classroom Mortise Lever Lock - Motor Drive - Fail Secure Satin Chrome

Item #: M1520M-1-ML2055-RWM-626-LC by ACSI

See reviewsSee reviews

$701.90

/each
SAVE UP TO 70.19

Buying in bulk

Special Order*Usually ships in 1-2 weeks
QTY
–
+
+ Add to Wishlist
Buy in Bulk & Save - See How Watch Now
Large Order Quote

Shop with Confidence

30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.

Safe Payment
Features

Finish

Satin Chrome

Function

1520M-Fail Secure Control

Cylinder Type

Less Cylinder

Finish Description

Satin Chrome

Product Type

Electronic Mortise Lock

Series

M1520M Series

Electric Options

Latchbolt Monitor

Strike Type

Straight Lip

ADA Compliant

YES

Finish Family

Satin Chrome

Strike Size

4-7/8" x 1-1/4"

Hub Size

5/16 Inch

Lever Size

4-3/8 Inch

Hub Material

Steel

Standards

UL Listed; California State Fire Marshall Approved; ANSI/BHMA A156.13 Series 1000; Operational and Security Grade 1; A117.1 Accessibility Code

Front Material

Heavy Gauge Steel

Case Dimensions

5-7/8" x 4" x 15/16"

Function Description

Outside Trim is Unlocked When Power is Applied and Locked When Power is Removed. Lockset will Lock in the Event of a Power Failure

Front Size

8" x 1-1/4" x 3/32"

Function Family

Fail Secure

Strike Lip

1-1/8 Inch

Product Projection

2-1/2 Inch

Spacing

3-5/8" (Knob/Lever to Cylinder); 2-7/16" (Knob/Lever to Thumbturn)

Rose/Escutcheon Width

2-1/4 Inch

Rose/Escutcheon Length

2-1/4 Inch

Electrified Features

12/24V at 250mA Inrush; 10mA Holding

Features

Simple User Selectable Fail Safe/Fail Secure Operation in Motor Controlled Locks; Continuous Duty Rated; Low Power Consumption; Interface With Life Safety Systems

Voltage

12 to 24VAC/VDC

Grade

ANSI/BHMA Grade 1

Application

Offices; Schools; Hospitals; Hotels

Hand

Field Reversible

Backset

2-3/4 Inch

Handing

Reversible

Warranty

10 Year

Color Code

626/US26D

Door Thickness

1-3/4 inch

Latch Throw

3/4 Inch

Manufacturer Parent

ACSI

Latchbolt Size

5/8" x 1"

Auxiliary Latch Throw

9/16 Inch

Latchbolt Type

2-Piece Mechanical With Anti-Friction Insert

Sub-Series

M1520M-1-ML2055-RWM-626-LC

Product Overview
1500 SeriesElectric Mortise Lock

ACSI Series 1500 Electric Mortise Locks provide safety and security for stairtower doors or controlled areas where both locking and latching are required. The locks are available in motor-controlled or solenoid-controlled to allow remote electric locking or unlocking while conforming to life-safety codes.

Features:
  • UL Listed
  • California State Fire Marshall approved
  • Fail Safe (Power Lock)
  • - Outside trim is locked when power is applied and unlocked when power is removed (storeroom function when energized).
  • Lockset will unlock in the event of a power failure (passage function).
  • Fail Secure (Power Unlock)
  • - Outside trim is unlocked when power is applied and locked when power is removed. Lockset will lock in the event of a power failure.
  • Simple user selectable fail safe/fail secure operation in motor-controlled locks
  • Continuous duty rated
  • Low power consumption
  • 24VDC, 24VAC, 12VDC, or 12VAC operation
  • When key cylinders are provided in the locks, the latch bolt may be momentarily retracted with key even though electrically locked.
  • Note: Locks that are electrically unlocked may not be locked via the key cylinder.
  • Wide variety of monitoring options are available
  • Interface with life-safety systems
Corbin Russwin: Models:
  • 2055
Modifications:
  • 1520M, 1510M, 1520C, 1510C, 1500
Options:
  • AE, LM, AM, LB, SM, KM
Specifications: 1510 - Fail Safe (Power Lock):
  • Outside trim (or both outside and inside trim depending on the lock function) is locked when power is applied and unlocked when power is removed. Lockset will unlock in the event of a power failure.
1520 - Fail Secure (Power Unlock):
  • Outside trim (or both outside and inside trim depending on the lock function) is unlocked when power is applied and locked when power is removed. Lockset will lock in the event of a power failure.
Key Function:
  • The latch bolt may be momentarily retracted with a key even though the lockset is electrically locked.
Electrical Specifications:
  • Voltage: 12-24V AC/DC (11V - 30V)
  • Current: 250mA MAX Inrush, 10mA MAX Holding
  • Non-polarized Leads
Switch Slider Settings:
  • Yellow: Fail Secure
  • Green: Fail Safe
2-Conductor Wire Run:
  • Distance 12V/24V: 125'/250'
  • Wire Gauge: 22
  • Distance 12V/24V: 200'/400'
  • Wire Gauge: 20
  • Distance 12V/24V: 300'/600'
  • Wire Gauge: 18
  • Distance 12V/24V: 500'/1000'
  • Wire Gauge: 16
  • Distance 12V/24V: 750'/1500'
  • Wire Gauge: 14
  • Distance 12V/24V: 1250'/2500'
  • Wire Gauge: 12
  • Note: Power must be applied to the lock after a switch slider setting change.