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FOSC 450 B6
Closure

I N S T A L L A T I O N   I N S T R U C T I O N

Fiber Optic Splice Closure

1.0 General Product Description

The FOSC 450 fiber optic splice closures use compressed-gel cable
seals to environmentally seal fiber cable splice points. 

The maximum single splice capacity of the FOSC 450 B6 closure is
144 with 24 splices stored on six trays.  The maximum mass fusion
splice capacity is 288, only four trays are needed.

A larger FOSC 450 D6 closure is also available.  Splice capacities for
the D size are 576 for single splicing and 1152 for mass splicing.

Note:  Cable blocking is not recommended in this closure due
to the space constraints.  If cable blocking is used, follow the
special instructions in "D/Gel Cable Block" installation instruc-
tions.

2.0 Kit Contents

•  Dome and clamp
•  Base and o-ring
•  Metal slack basket (optional)
•  Gel end-piece
•  Velcro strap
•  4 Gel end-piece plugs
•  2 or 6 Cable strain relief holders and cable clips
•  Hose clamps
•  6 Small and 2 large strength member attachment brackets 

with lugs

•  3 Bond clamps (3" long) -- optional
•  3 Braided grounding straps -- optional
•  12 Small tie wraps
•  1/4” Nut driver to install hose clamp
•  Installation Instructions

FOSC 450-ab-c-dd-e-fgh

a =    Closure size 
b =    Number of cable ports (6 for B-size)
c =    Number of cable ports for which termination hardware 
           is provided  (typically all ports or 2 ports)
dd = Capacity or type of splice tray (12, 24, NT [no trays])
e =    Number of trays pre-installed (1 or 0 [NT] is standard)
f =     Basket type (N=none or B)
g =    Number of ground feed-thru lugs (0 or 3)
h =    Valve for flash test (V = Yes [standard],  N = No)

Summary of Contents for FOSC 450 B6

Page 1: ...follow the special instructions in D Gel Cable Block installation instruc tions 2 0 Kit Contents Dome and clamp Base and o ring Metal slack basket optional Gel end piece Velcro strap 4 Gel end piece...

Page 2: ...om the dome and base Fig 1 2 Remove the dome from the base of the closure Note Using a FOSC ACC 450 closure workstand makes installations easier PML 941802 000 3 If a gel seal is already installed loo...

Page 3: ...rom the ring cut 4 Determine which port of the metal frame the cable will be installed Fig 5 Once the cable termination hardware is installed onto the cable sheath the assembly slides into the metal f...

Page 4: ...be installed in the closure before attaching cables to the metal frame Fig 9 Midspan and or main cables are typically installed in the lower ports of the closure and routed to the slack basket for sla...

Page 5: ...e LBT go to step 6 3 Mark the LBT and ring cut as shown Fig 11 Remove LBT and clean fibers 4 Secure the LBT to the tray with tie wraps Note Felt wrap can be installed onto LBT s to provide better resi...

Page 6: ...3 Select fiber s to be cut or routed Note Selected midspan fibers can be cut in the middle of the loop to splice to either end but if more length is needed cut offset from midpoint short end fibers wi...

Page 7: ...nsure that the seal is in the un compressed position Squeeze the gel end piece to unlatch and open each half one at a time Figure 15 2 Install the gel end piece around the cables Position it against t...

Page 8: ...AERIAL CLAMPS PML 663259 Pole Wall Mount FOSC ACC WALL POLE MOUNT PML C82508 000 Fig 20 Fig 21 Fig 22 Tyco Electronics Corporation 8000 Purfoy Road Fuquay Varina NC 27526 3000 Tel 919 557 8900 Fax 919...

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