Eaton 10250T Manual

Effective June 2011

Instructional Leaet IL04707001E

10250T contact block assembly

• Underwriters Laboratories Listed

• For use on a flat surface of Type 1, 2, 3, 3R,

3S , 4, 4X, 12, and 13 enclosures

• IP65

 For indicating lights without moveable operations.

General

1. Drill mounting hole for vertical or horizontal

mounting per one of the figures above.

2. Ensure sealing gasket is in place on the

operator. Align locating nib of operator

with notch in panel and insert operator

through mounting hole. Exception: See

special instruction publication 20437 for

placement of sealing gasket when using

10250T/91000T protective boots.

3. Place legend plate and mounting nut over

operator. Tighten mounting nut. If applicable,

assemble lenses, mushroom buttons, etc., to

operator. Tighten securely (5 ft-lbs) (6.8 Nm).

4. Torque terminals to 7 in-lbs (0.8 Nm).

For ease of assembly, Eaton recommends

the following tools:

• 10250T/91000TA95 for 10250T/91000T octagonal

nuts, E29, and E30 lines

• E22CW for 10250T/91000T octagonal nuts,

E22, E34, and E30 lines

Retaining

Nut

Thrust Washer

(Optional)

Nameplate

Operator

Gasket

Panel

0.063–0.250

(1.6–6.3 mm)

Assemble MasterTest or

Flasher Modules to Rear

of Contact Blocks.

Wires Shown are not Included

Ratings are Stamped

on Light Unit

and Contact Block

#755 Lamp

Saddle ClampType Terminals

14 AWG–22 AWG

(2.5 mm2—0.34 mm2)

Solid or Stranded.

Do Not Mix One or Two

Conductors perTerminal

Earth/Ground

Conductor

91000/E34

EarthTerminal

ILL

P.B.

IND

LIGHT

PUSH

PULL

T-Line Operator

Lens Washer

0.60

(15.2 mm)

1.20

(30.5 mm)

0.136 (3.5 mm) Diameter Hole or

0.180 (4.6 mm) Rectangular Notch

Use 60/75ºC Copper Conductors Only

Vertical Mounting Horizontal Mounting

Eaton Corporation

Electrical Sector

1111 Superior Ave.

Cleveland, OH 44114

United States

877-ETN-CARE (877-386-2273)

Eaton.com

Printed in USA

Publication No. IL04707001E / Z11206

June 2011

Eaton is a registered trademark

of Eaton Corporation.

All other trademarks are property

of their respective owners.

Instructional Leaet IL04707001E

Effective June 2011

10250T contact block assembly

Push–pull operators

Application guide

To assist in the selection of contact blocks, the diagram on page 1

shows pictorially by symbols “A” and “B” locations of contact

circuits after assembly of contact blocks to the operator. Table 1 and

Table 2 show the effect of the push and pull operations on either

NO or NC contacts.

A maximum of two contact blocks may be used with each operator.

Maximum torque of stacking screws is 9 in-lbs. Adding more

than two blocks may cause this switch to malfunction. Single

circuit contact must be mounted under circuit “A”. Special function

contact blocks are not available for use with the three-position

push–pull operator.

ote:N Buttons and lenses in various colors are ordered and packaged sepa-

rately. This pushbutton unit is oiltight when the adapter gasket and button or

lens gasket are securely tightened.

Table 1. Push–Pull Operator Types

Operator

Type

Contact

Block

Circuit

Operator Mode and Contact Circuit

Pulled Intermediate Pushed

Circuits

A B Circuits

A B

Momentary

push and pull

and

momentary pull,

maintained push

2NC

1NO

X X

O X

O O

Maintained

push and pull

(Two-positions)

1NC

2NC

1NO

2NO

X or X

X X

O or O

O O

intermediate

position

O or O

O O

X X

Momentary

push and pull

(Three-positions)

1NO–1NC O X O O X O

ote:N X = contacts closed; O = contacts open

Table 2. Push–Pull Wire Position Operation

Control Line Diagram Operator Circuits Operator Mode

Three-wire,

three-position,

momentary

Circuit

L2L1

Momentary

push and pull

2NC

contact

blocks

START

(Momentary)

Normal position

(Maintained)

STOP

(Momentary)

Two-wire,

two-position,

maintained

Circuit

L2L1

Maintained

push and pull

1NC

contact

blocks

START

(Maintained)

intermediate

position

STOP

(Maintained)

Three-wire

momentary pull,

maintained push

Circuit

L2L1

Maintained

push and

maintained

ready,

momentary

pull to start

2NC

contact

blocks

START

(Momentary)

Normal position

(Maintained)

STOP

(Momentary)

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