DISCONTINUED
PRODUCT
M BLOCK
Distribution Frames
Key Features
•Modular frame design increased
cable and jumper flexibility in a
minimum amount of floor space
•Available in single- or doublesided configurations allows
wall-mounted or free-standing
installations
•Completely fabricated frame
modules, made to order quick and
easy purchasing and installation
•UL Listed meets or exceeds
documented performance levels
Outside Plant for
Business-Critical Continuity
Description
M block frames are specifically designed for quick-clip block wire termination and distribution, using our R66M series terminal blocks (R66M125 and R66M150).
M block frames offer the cable and jumper flexibility of a standard central office frame
with a minimum of floor space. Single- or double-sided configurations allow wall-mounted
or free-standing installations.
Installation is quick and easy because each unit is packaged as a completely fabricated
frame module. Double verticals are welded together as a unit (module), making a freestanding frame that can be positioned in an entire lineup before anchoring. Guard rails
and end guards are quickly installed to complete the installation.
R89 series brackets easily attach to the frame and the R66M blocks snap quickly into the
brackets.
The design of these frames also provide ample space and area to tie interconnecting
cables with ease of assembly, cross-connect, and maintenance in mind. Cables and jumpers are easily routed and traced using this unique design.
Horizontal and vertical cable troughs are formed
as the R89 type brackets are attached to the
frames. This provides extremely flexible cable
routing paths. The cables are “hidden” when the
terminal blocks are snapped into place.
Jumper terminations can be made quickly from
one point to another anywhere on the frame.
Jumper rings are included, providing neat and
uncongested jumper runs.
On double-sided frames, cross-connections are
made between the horizontal and vertical sides in
a “straight line-shortest distance” approach, eliminating complicated horizontal and vertical runs.
Application
M block distribution frames are used to cross-connect large pair counts in a frame environment.
These frames are used in Centrex, PBX, and PABX
installations where an MDF or IDF is required.
OSPDS-085900 / 0605
M BLOCK Distribution Frames
2297 Series–8-ft., single-sided floor-towall mount frame. One unit will mount (8)
R66M150 or R66M125 terminal blocks.
Total capacity, 400-pair per unit with
R66M150. The 2297 series is equipped with
R89 mounting brackets.
2297X
2457 Series–7-ft., double-sided freestanding frame. Each module consists of
two verticals, each mounting (7) R66M150
or R66M125 terminal blocks, for a total of
14 blocks on the vertical side. Fifteen R66M
can be mounted on the horizontal side of
one vertical on 10.18-in. centers (5-in. shelf
spacing). One unit equals 1,450-pair total
capacity. Each additional module provides
30 block positions on the horizontal
side and 14 on the vertical for additional
capacity of 2,200-pair
Emerson Network Power.
The global leader in enabling businesscritical continuity.
Emerson Network Power
Energy Systems
4350 Weaver Parkway, Warrenville, IL 60555
Toll Free: 800-800-1280 (USA and Canada)
Telephone: 440-246-6999 Fax: 440-246-4876
www.EmersonNetworkPower.com/EnergySystems Add 01 to 10 to determine
number of verticals
2457
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AC Power Systems
Connectivity
DC Power Systems
Embedded Computing
Add 01 to 10 to determine
number of modules
(2 verticals per module)
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Embedded Power
Integrated Cabinet Solutions
Outside Plant
Power Switching & Control
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Precision Cooling
Services
Site Monitoring
Surge Protection
© 2006 Emerson Network Power Energy Systems,
North America, Inc. All rights reserved.
The Emerson logo is a trademark and a service mark
of Emerson Electric Co. Emerson Network Power is a division
of Emerson Electric Co.
Printed in USA
DISCONTINUED
PRODUCT
OSPDS-085900 / 0605