AT&T SPIRIT 371 Protector Assembly Installation Instructions Manual page 3

2.Description
The Model 371 IROB Protector Assembly is composed of a Model 349-2LG MKII
Primary Protector, a Model 371-02 Secondary Protector, and a Model 151 Faceplate
Ground Adapter Screw. Each protector is mounted in a separate housing with
a hinged cover.
Primary Protector (Model 349-2LG MKII)
The housing includes a grommet for wire penetration, a No. 10 ground stud, and
four (4) terminal posts.
The primary protection consists of two (2) TII 356L encapsulated, heavy duty
three-electrode gas tube protector modules.
A tie wrap must be inserted through a tab on the hinged cover for security.
Figure 2A
Primary Protector (Model 349-2LG MKII)
2. Description (Cont'd)
Secondary Protector (Model 371-02)
The housing includes four (4) screw terminals, a six-position rnodular jack, and
a 3 ft. ground wire terminated in a spade lug.
The secondary protection consists of solid-state surge suppression and fusing
assembled on a printed wiring board.
A tie wrap must be inserted through a tab on the hinged cover for security.
WARNING
To prevent damage to the
equipment and a potential
safety hazard, this device must
be grounded properly.
See installation notes for the
proper wiring instructions.
Secondary Protector (Model 371-02)
Figure 2B