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1
Description
Types SSD and SHD Power Break II draw-out circuit breakers
are used in types SPS and SPH substructures, with
appropriate catalog numbers listed in Table 1. Power Break II
switches are used only with type SPS substructures, with
appropriate catalog numbers listed in Table 2. Draw-out
construction permits activation of a new feeder, allows rapid
replacement of a device, and facilitates inspection and
maintenance of the draw-out device with no need to de-
energize the entire switchboard.
Draw-Out Breaker
SSD08X2##
SHD08X2##
SSD16X2##
SHD16X2##
SSD20X220
SHD20X220
SSD25X###
SHD25X###
SSD30X3##
SHD30X3##
4 0X
4 ##
SSD
4 0X
SHD
4 ##
Note: In the circuit breaker catalog number, replace "X" with "G" for
EntelliGuard ® Trip Units or "B" for MicroVersaTrip Plus™ or
MicroVersaTrip PM™ Trip Units or with "D" for Power+™ Trip Units
—
Table 1. Catalog numbers of draw-out circuit breakers and corresponding substructures.
Draw-Out Switch
SSD08X2##
SSD16X2##
SSD20X2##
SSD25X###
SSD30X3##
SSD40X4##
Note: In the switch catalog number, replace "X" with "W" for
EntelliGuard ® Control Units or with "Y" for Power+™ Control Units
—
Table 2. Catalog numbers of draw-out switches and corresponding substructures.
Features
The features described below are illustrated in Figures 1, 2,
and 3.
Primary Disconnects. Primary power is fed through multiple-
finger primary disconnects when the device is in the
connected position.
Secondary Disconnects. Control power is provided through
the secondary disconnects in the test and connected
positions only. All accessories terminate at dedicated
positions regardless of the combination of accessories
installed.
Substructure
SPSDOS08
SPHDOS08
SPSDOS16
SPHDOS16
SPSDOS20
SPHDOS20
SPSDOS25
SPHDOS25
SPSDOS30
SPHDOS30
4 0
SPSDOS
SPHDOS
4 0
Substructure
SPSDOS08
SPSDOS16
SPSDOS20
SPSDOS25
SPSDOS30
SPSDOS40
Rollers. The rollers on the sides of the device ride on retract-
able rails in the draw-out substructure for easy installation
and removal.
Draw-Out Mechanism. A racking shaft powers a centrally
mounted screw through a chain drive into a fixed nut in the
substructure. A special speed wrench is supplied with an
integral
1
/
-inch square-drive socket to aid in installation
2
and removal.
Racking Shaft Wrench Lockout Plate. This interlock prevents
engagement of the wrench when the device contacts are
closed.
Rollers
Shutter
Actuator
Primary
Draw-Out
Disconnects
Interlock
—
Figure 1. Rear view of the Power Break® II draw-out device.
Draw-Out Padlock
Accessory
Cat. No. TDOPC
—
Figure 2. Left side of the device, showing the padlock accessory and racking shaft lockout plate.
Power Break® II Devices
Draw-Out Device Installation
Secondary
Disconnects
Bypass Switch
Draw-Out
Actuator
Mechanism
Racking Shaft
Wrench Lockout
Plate
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