Emerson UR399 UL Brochures and Data Sheets

UR399
UL Listed Central Office Connector

Key Features

Description

• Maximum density saves space;

increases number of protected
cable pair per frame vertical

The UL Listed UR399 is the highest density 100-pair connector available that uses industry
standard 5-pin protector modules. Its compact design, only 8.5-in. (216mm) H x 4-in.
(104mm) W x 10-in. (257mm) D, allows maximum density per frame vertical.

Outside Plant for

Business-Critical Continuity

™

• Narrow block width permits

large inter-vertical working space
for fast, convenient jumper
administration

• Front ground test point saves labor

and increases reliability; provides
a convenient place to attach an
alligator clip without reaching
behind the connector

• Accepts industry standard

protector modules to permit a
wide module selection

• Gold-plated protector module

sockets and test field contacts
provide superior electrical contact
to eliminate noise problems

• UL Listed for documented

performance

The UR399 has a metal shroud that fully encloses the rear of the block (Fig. 1) and is UL
Listed to meet specification number UL 497.

Made of a polycarbonate-blend, connectors can be factory stubbed with 22- or 24-gauge
cable in 10-ft. increments, starting at 20 feet. The internal protector module ground
system is constructed of ten 12AWG copper ground rods interconnected to two 6AWG
copper ground bars, which are perpendicular to each other. The grounding system is
attached to a ground link that protrudes out of the left of the shroud (Figs. 2 and 3). The
assembled portion of this 6AWG ground link determines the ground classification of a
UR399 connector as either:

(a) standard or frame ground system

catalog prefix UR399 (Fig. 2)

(b) isolated module ground system

catalog prefix USR399 (Fig. 3)

Front and rear snap-through fanning strips facilitate orderly jumpering and offer highly vis­ible pair count identification. The 100-pair front-facing test field makes testing easy.

The UR399 meets or exceeds the specifications set forth in the Telcordia TA-EOP-000164
and GTE GTS 8339 documents.

Application

The UR399 protects personnel and
equipment from abnormal voltages
and currents on incoming cable pairs. It
mounts on central office conventional
frames with 8-in. centers and RDS modu­lar frames from Emerson , or PBX where
UL Listed circuit protection is required.

OSPDS-091100 / 0310

1

UR399
UL Listed Central Office Connector

Fig. 1

Metal Shroud

Standard Ground Link Assembly

Fig. 2

Isolated Ground Link Assembly

Dimensions

Connector H W D

UR399* 8.5-in. (216mm) 4.0-in. (104mm) 10.0-in. (257mm)

Specifications

Capacity Capacity
Frame Height Stub Up* Stub Down

7-ft. 700 pair 800 pair

8-ft. 900 pair 1000 pair

9-ft. 1000 pair 1100 pair

11.5-ft. 1400 pair 1400 pair

* Reduction in stub up capacity is due to accommodating cable bend to overhead rack.

NOTE 1: See the Protection section for protector modules, the Accessories section for test equipment accessories,

and the CO & Remote Frames Systems section for mounting bars.

Fig. 3

2

OSPDS-091100 / 0310