OEM Equipment

Electrical Apparatus
Two Position Sidewall (Horizontal) Mounted
Loadbreak Switches 800-65
GENERAL
The compact Cooper Power Systems
two-position loadbreak/loadmake
switch is designed for use in
transformer (mineral) oil or R-Temp®
fluid-filled “Class 1” pad-mounted
transformers or distribution
switchgear.
The switch mechanism uses a
manually charged over-toggle stored
spring assembly, which is independent
of operator speed. The spring loaded
activating mechanism ensures quick
loadbreak or loadmake operation in
less than one cycle. The two-position
switch incorporates a double “O” ring
shaft sealing system and three types
of mounting systems, which include a
bolt-in place system, weld-in bracket
assembly, or an easy to install ring
mount system. Also incorporated into
the switch mechanism are internal
stops which restrict the handle ori- Figure 1.
entation to only two positions. Two-position loadbreak switch (Bolt-In and Ring Mount designs shown).
The two-position switch is hookstick
operable and requires minimal input
torque to operate. It features tungsten TABLE 1
Ratings and Characteristics
copper contacts to minimize arc
erosion and prolong contact life. The Description Units Ratings
switch contacts are factory assembled Rated Voltage
and gaged to a predetermined spring Maximum rating phase to phase kV 15.5 27.6 38 46
pressure to ensure uniform contact Maximum rating phase to ground kV 8.9 15.6 21.9 26.5
Power Frequency Hz 60 60 60 60
pressure between the contacts and Current Rating (Continuous) A 550 400 300 65
the blades. Switching Current A 550 400 300 65
Magnetizing Interrupting Current A 21 21 10.5 10.5
The silver-plated copper blades are Cable Charging Current A 10 25 20 15
securely keyed between the vented Fault Withstand Current (Momentary)
rotor halves which ensure proper 10 cycle symmetric rms kA 12 12 12 12
10 cycle asymmetric rms kA 19.2 19.2 19.2 19.2
blade and contact alignment during 45 cycles symmetric rms kA 16 16 16 16
switching. All of these features make 1 second symmetric rms kA 12 12 12 12
the two-position switch a reliable, 2 second symmetric rms kA 8 8 8 8
no-maintenance switch product. 3 second symmetric rms kA 7 7 7 7
Fault Close and Latch
10 cycle symmetric rms kA 12 12 12
DESIGN/PRODUCTION 10 cycle asymmetric rms kA 19.2 19.2 19.2
TESTS 15 cycle symmetric rms
15 cycle asymmetric rms
kA
kA
12
19.2
The two-position switch has been Impulse Withstand Voltage (1.2/50µs)
To ground and between phases kV 200 200 200 200
tested to meet the sequential test Across open contacts kV 235 235 235 235
requirements described by IEEE Power Frequency Withstand (1 minute)
Standard C37.71-1984™ and IEEE To ground and between phases kV 70 70 70 70
Standard C37.72-1987™. Tests are Across open contacts kV 95 95 95 95
DC Withstand (15 minutes)
also conducted on production To ground, between phases and across kV 103 103 103 103
switches in accordance with Cooper Contacts
requirements. Corona (Extinction) kV 26 26 26 26
Mechanical Life (Minimum Operations) 2,000 2,000 2,000 2,000 2,000
■ Physical Inspection
■ Turn Tested (on/off/on)
■ Operation Torque Verification
■ Resistance Testing
September 2004 • Supersedes 10/02 1
Printed in USA
Two Position Sidewall (Horizontal) Mounted Loadbreak Switches

INSTALLATION immersed under transformer oil or Note: For all mounting systems,
an equivalent approved fluid. All refer to S800-65-2 for more
No special tools are required. The parts should be inspected for damage detailed installation
switch is sidewall-mounted with the before using. instructions.
internal components completely

Ø .393" PLASTIC NUT A

(10 mm) Ø .44" FURNISHED 1.4"
WITH SWITCH 6.4" 3.8" 3.8" (35 mm)
(11 mm)
MTG. (163 mm) (97 mm) (97 mm)
.75"
HOLES 3.2"
(19 mm)
TYP. (81 mm)

5.0"
(127 mm)

5.27" 8.3"
(134 mm) (210 mm)

TANK SEALING TANK WALL

1.88" GLAND FURNISHED
(48 mm) WITH SWITCH OPTIONAL
1.0" INDICATOR
(25 mm) PLATE
4.88" (SEE FIGURE 8 )
TOP VIEW
(124 mm)

Figure 2.
Line illustration with dimensions of loadbreak switch with “BOLT-IN SYSTEM”.
Notes:
1. Dimensions given are for reference only.
2. Switch shown with contacts “CLOSED” and flat of shaft on “BOTTOM” to position
cast handle pointer to 9 o’clock when looking at switch with side marked “TOP” up.
Handle is rotated approximately 90° CCW when it is in the “OPEN” position.

+.030 TABLE 2
2.187" 1.32" -.000 DIA.HOLE
TYP. Dimensional Information for Figure 2
(56 mm) (35.5 mm +0.8
-0.0
) Number of “A” Dimension
Decks or Phases Inches/(mm)
1.375" 1 7.83 (199)
TYP. 2 11.64 (296)
2.75" (35 mm)
(70 mm) 3 15.44 (392)
Note: For catalog (P/N) information see Tables 5
and 6 on page 4 and 5.
0.140"
RAD.
(4 mm)
4.375"
0.662" (111 mm)
(17 mm) COUPLING WITH INTERNAL
3/8-16 THREAD x
0.75" LG (M8 x 10 mm LONG)
(BOLT-IN SYSTEM)

Figure 3.
Hole & Coupling placement detail.
Note: Hole & Coupling placement detail. Couplings
not included with switch. Pre-welded coupling plates
available. See Table 6.

2
 Ø .393" 2.82"
4.88" (10 mm) "A"
(72 mm) 1.4"
(124 mm) 6.75" 3.8" 3.8"
.80" (35 mm)
(171 mm) (97 mm) (97 mm)
SEE (20.3 mm)
NOTE 2

5.27" 8.3"
(134 mm) (210 mm)
.07"
(2 mm)

1.19" WELD-IN MOUNTING

BRACKET
(30 mm) HOLE DIAMETER IN TANK
1.0 1.88 WALL FOR WELD-IN MOUNTING BRACKET MUST BE 1.00" ±0.10 (25.4 mm).
(25 mm) (48 mm)
TANK WALL

Figure 4.
Line Illustration with dimensions of loadbreak switch with “WELD-IN SYSTEM”.
Notes:
1. Dimensions given are for reference only.
2. Switch shown with contacts “CLOSED” and flat of shaft on “BOTTOM” to position cast handle pointer to 9 o’clock when looking at switch with side marked “TOP” up.
Handle is rotated approximately 90° CCW when it is in the “OPEN” position.
3. The hole diameter in the tank wall for the mounting bracket must be 1.00" ±0.010" (25.4 mm ±.25 mm).

TABLE 3 TABLE 4
Dimensional Information for Figure 4 Dimensional Information for Figure 5
Number of “A” Dimension Number of “A” Dimension
Decks or Phases Inches/(mm) Decks or Phases Inches/(mm)
1 8.14 (207) 1 7.83 (199)
2 11.95 (303) 2 11.64 (296)
3 15.75 (400) 3 15.44 (392)
Note: For catalog (P/N) information see Table 6 on Note: For catalog (P/N) information see Table 6 on
page 5. page 5.

Ø .393"
(10 mm) A
Ø .44" 3.2" 1.4"
(11 mm) (81 mm) 6.4" 3.8" 3.8" (35 mm)
MTG (163 mm) (97 mm) (97 mm)
.75"
HOLES (19 mm)
TYP.
SEE
NOTE 2

OUTER RING
NOT PRESENT
ON SINGLE
PHASE
5.27" 8.3"
(134 mm) (210 mm)
HANDLE & NUT
FURNISHED
WITH SWITCH

(2) MYLAR WASHERS TANK WALL

1.88" FURNISHED WITH
(48 mm) SWITCH
1.0" INDICATOR PLATE IS
(25 mm) OPTIONAL
4.88" (SEE FIGURE 8)
(124 mm)

Figure 5.
Line Illustration with dimensions of loadbreak switch with “RING MOUNT SYSTEM”.
Notes:
1. Dimensions given are for reference only.
2. Switch shown with contacts “CLOSED” and flat of shaft on “BOTTOM” to position cast handle pointer to 9 o’ clock when looking at switch with side marked “TOP” up.
Handle is rotated approximately 90° CCW when it is in the “OPEN” position.

3
 800-65

Ø 2.00" (51 mm) EXTERIOR MOUNTING SURFACE 2.00"

MUST BE FLAT WITHIN .010" OVER ENTIRE AREA. (50.8 mm)
2.38"
(60.3 mm)
.40"
(10.2 mm)
Ø 1.32" +.030 HOLE
-.000
(33.5 mm +0.8
-0.0)
1.50" 1.75"
.63" (38.1 mm) (44.5 mm)
.662" (15.9 mm)
(16.8 mm)
Figure 7.
Padlockable Handle.

R .140"
(3.56 mm)

Ø 4.00" (102 mm) INTERIOR MOUNTING SURFACE

MUST BE CLEAR OF OBSTRUCTIONS.

Figure 6.
Hole placement (Ring Mount system).

TABLE 5
Accessory Parts
Description Catalog Number Drawing
*Conversion Mounting
Bracket (For Bolt-in
System) 2037424C03M 4200738N
Padlockable Handle 2239000B14 4201093N
Indicator Plate 2238709C01 4201192N
*Note: Plate includes hole and couplings.

4
 800-65

ORDERING
INFORMATION
To order the two-position sidewall
(horizontal) mounted loadbreak
switch, specify catalog numbers as
listed in Table 6.

TABLE 6
Loadbreak Switch Significant Digit Catalog Numbers
1 2 3 4 5 6 7 8 9 10 11 12 13

L S 2 B 3 3 8 H 3 N 1 A P
CODE PRODUCT CODE POWER RATING CODE STYLE* CODE OPTIONAL
L LOADBREAK 338 300 A, 38 kV N NORMAL P SILVER-
S SWITCH 427 400 A, 27 kV S STAINLESS STEEL/ PLATED
TERMINALS
2 2-POSITION 515 550 A, 15 kV NON-CORROSIVE (65 A and 300 A
646 65 A, 46 kV ONLY. 400 A and
550 A already
CODE INSTALLATION CODE INDICATOR PLATE silver-plated)
B BOLT-IN SYSTEM CODE ORIENTATION 1 NO INDICATOR
R RING MOUNT SYSTEM H HORIZONTAL PLATE
W WELD-IN SYSTEM 2 WITH OPTIONAL
INDICATOR PLATE
CODE NUMBER OF PHASES (Indicator plate not available for
Weld-In system)
1 ONE
2 TWO
3 THREE
CODE HARDWARE KITS
A HARDWARE KIT
W/BRASS
*NORMAL style switch has all externally located parts built from plated steel, HANDLE
aluminum and brass materials.
STAINLESS STEEL/NON-CORROSIVE style switch has all externally located B HARDWARE KIT
parts built from stainless steel and brass materials. W/BRASS HANDLE
STAINLESS STEEL/NON-CORROSIVE style switch should always be AND SS NUT
matched with a hardware kit having a brass handle and a stainless steel nut.
Digit 12 should always be “B”, if digit 10 is “S”. C NO HARDWARE KIT

Note:
Catalog Number Example shown in Table 6 represents a standard, Bolt-In system, 300 A, 38 kV, Horizontal, 3-phase, standard plated steel
external parts, w/o indicator plate, with brass handle hardware kit, 6:00/9:00 positions. (Other handle position options available upon
request for 9:00/12:00, 12:00/3:00, and 3:00/6:00 positions. Consult your Cooper Power System sales representative for details.)

2.75"
(70 mm)
CLOSE

2.75"
(70 mm)

OPEN
Figure 8.
Index plate (optional).
Note: For different orientations see drawing 4201192N.

5
©2004 Cooper Power Systems or its affiliates.
R-Temp® is a registered trademark of Cooper Power Systems or its affiliates. 1045 Hickory Street
IEEE Standard C37.71-1984™ and C37.72-1987™ are trademarks of the Institute of Pewaukee, WI 53072 USA
Electrical and Electronics Engineers, Inc. www.cooperpower.com

MI
9/04