4 Position
Combi-
nation
No.
Desired Circuit
Operation
X Circuit Closed
O Circuit Open
Contact Blocks Required to
Accomplish Circuit Function
Combi-
nation
No.
Desired Circuit
Operation
X Circuit Closed
O Circuit Open
Contact Blocks Required to
Accomplish Circuit Function
Mounting Location
Mounting Location
Top Plunger A
Bottom
Plunger B
Top Plunger A
Bottom
Plunger B
1
X O O O
10
X O X O
2
O X O O
3
O O X O
11
X X X O
4
O O O X
5
X O O X
12
O X X X
6
O X X O
7
O O X X
13
X O X X
8
X X O O
9
O X O X
14
X X O X
3 Position
Combi-
nation
No.
Desired Circuit
Operation
X Circuit Closed
O Circuit Open
Contact Blocks Required to Accomplish Circuit Function
(Jumpers must be installed where indicated)
Operator with Cam Code #2
Operator with Cam Code #3
Mounting Location
Mounting Location
Top Plunger A
Bottom Plunger B
Top Plunger A
Bottom Plunger B
1
X O O
2
X X O
3
X O X
4
O O X
5
O X X
6
O X O
2 Position
Combi-
nation
No.
Desired Circuit
Operation
X Contacts
Closed
O Contacts
Open
Contact Blocks Required
to Accomplish Circuit
Function
Top Plunger
A
Bottom
Plunger
B
1
X O
2
O X
2
Instructions and Operation
P20442
Effective February 2018
Heavy Duty Oiltight Selector Switch
SWITCH UNITS-10250T/91000T OR E34
EATON CORPORATION
www.eaton.com
GENERAL
With any electrical component there is the possibility an external factor (loose wire, moisture, etc.) can cause a short circuit between the component and
ground. If the device is adequately grounded, the condition causes the protective fuse or circuit breaker to open and remove the potential. If not, an electrical
hazard may remain unnoticed.
GROUNDING NIBS – 10250T
This 10250T device is designed to make direct metallic contact to the rear of the panel (with no interfere with component-to-panel ground continuity). As
a further aid in establishing an electrical ground, the device has 4 metal points, “grounding nibs” designed to penetrate most paint or other protective coatings.
Penetration of these nibs is dependent upon the torque applied to the mounting nut. Recommended torque is 5 ft.lbs (6.8Nm). More or less may be necessary
to penetrate the specific type of thickness of your panel coating. Test for continuity to ground after installation. If a short circuit to ground does occur, the
fault should be corrected and the device replaced.
GROUNDING KITS
For grounding 10250T devices to non-metallic panels or metal panels having excessive surface coating or for grounding E34 with any panel we offer the
following grounding kits which provide for a separate grounding circuit, daisy chained between components and then to ground. Use 10250TKG1.
EARTH TERMINALS- 91000T/E34
These devices are supplied with an earth/ground terminal incorporated. These devices have a 6-32 terminal screw and will accommodate ring type terminations
for bonding to international specifications.
Select cam code giving
simplest contact block
arrangement for circuit(s)
required.
-Ordinarily, these operators should not be used with overlap and early closing contact
blocks (10250T/91000T55, T56, T57 and T58). Contact local EATON sales office on
specific application.
CONTACT BLOCK SELECTION CHART
INSTRUCTIONS FOR THE ASSEMBLY OF THE PADLOCK ATTACHMENT E34TA11, 10250T/91000TA11
TO KNOB OPERATED HEAVY DUTY OIL TIGHT SELECTOR SWITCH OPERATORS
1. With the knob of the selector positioned per dimension “A”, place the
padlock attachment over the knob with the mounting screws located as
shown in the illustration.
2. Tighten the mounting screws alternately and uniformly to prevent the
attachment from being assembled skewed.
3. The outer lock ring can now be turned to any desired selector position.
there are provisions for 5 padlocks.
Dimension “A”- For 2 or 3 position selector switch operators. Locate the
knob half way between clockwise and center positions.
GROUNDING OF 10250T/91000T AND E34
COMPONENTS
Nib
Earth
Terminal
FOR HORIZONTAL MOUNTED UNITS THIS BASE IS TURNED 90 DEG.
HOWEVER, KNOB POSITION AND ASSEMBLY INSTRUCTIONS SHOWN
HERE APPLY
PADLOCK
ATTACHMENT
FOR ASSEM-
BLING SEE ITEM
2 INSTRUCTIONS
SELECTOR
KNOB
POSITION
DIM “A”
MOUNT-
ING
SCREWS
OUTER
LOCK RING
INTER LOCK
RING
OR
OR
OR
