Eaton ECN16A Replacement Instructions Manual

Brand: Eaton

Model: ECN16A

Type: Replacement Instructions Manual

Step Work Description

Turn OFF and lock out all power supplying this

switch before installing base kit.

Turn switch to "OFF" position.

Verify there is NO voltage present at the line and

load terminals using a properly rated voltage

sensing device.

Remove fuses.

Switch Base Replacement Instructions

3-Pole, 30/60 AMP Fusible Safety Switches

(catalog numbers beginning w/

ECN16A,ECN160,ECN161,ECN162,ECN18A,ECN180,ECN181,ECN182,ECL12A,ECL12B,ECL12C,ECL12D,ECL13A,ECL13B,ECL13C,ECL13D,ECN36A,

ECN360,ECN361,ECN362,ECN37A,ECN370,ECN371,ECN372,ECN38A,ECN380,ECN381,ECN382,ECN430,ECN431,ECN432,ECN461,ECN462,ECN491,ECN492,EC

N521,ECN522,ECN541,ECN542,ECN561,ECN562,ECN621,ECN622,ECN641,ECN642,ECN69A,ECN690,ECN691,ECN692,ECS91Q,ECS91S,ECS94Q,ECS94S,ECS97

S,ECS97Q.

Reference Pictures & Comments

Tools Required:

Personal Protective Equipment (Gloves and Eye Protection)

Properly rated voltage sensing device.

1/4" Torque Controlled Driver with magnetic socket.

5/16" Torque Controlled Driver with magnetic socket.

Small work table and screw bin.

All work should be performed in accordance with

NFPA 70E.

Revision : 1 1 of 8

Step Work Description

Reference Pictures & Comments

Remove clear line shield using a 1/4" driver. (1

screw) Keep parts for reinstallation on new base.

Remove red arc shield using a 1/4" driver. (1

screw)

For fusible switches remove middle load side fuse

clip connector screw with 1/4" driver. Keep screw

for reinstallation.

Remove insulator screw with 1/4" driver and

remove insulator. Keep parts for reinstallation.

Insulator used only on 60 amp and 30 amp

Canadian models.

On fusible switches it is helpful to remove two

screws with 5/16" driver from the lower fuse base

and lower it out of the way . Keep screws for

reinstallation.

Revision : 1 2 of 8

Step Work Description

Reference Pictures & Comments

If equipped with a neutral or control pole, loosen

mounting screw with 5/16" driver and slide to the

left. Screw is captivated by plastic base and does

not need removed.

Mark the line side lugs before removing so they

can be reinstalled back in their original phase

locations.

Remove screws from line side lugs using 5/16"

driver. Move wires to the side for base removal.

Keep screws for reinstallation on new base.

Remove switch base with 5/16 driver. (3 screws, 2

on bottom, 1 on top) Keep screws for

reinstallation on new base.

Slide base to left to disengage shaft from

mechanism. Remove insulator. Keep insulator if

present for reinstallation on new base. Insulator

used only on 60 amp models.

Revision : 1 3 of 8

Step Work Description

Reference Pictures & Comments

Verify there is no foreign material left in the

mechanism shaft coupling. This could cause

misalignment and premature failure of the new

base.

Remove three fuse clips with 5/16" driver and

keep for reinstallation.

Remove three fuse puller straps with 1/4" driver

and keep for reinstallation.

Remove universal base and hardware from box

verifying the following contents.

1-Universal Base

3-Lug Stops - *Not used for fusible devices.

3-Lug Stop Screws - *Not used for fusible devices.

Reinstall three fuse puller straps from original

base with 1/4" driver on new base assembly.

Torque to 15-25 in-lbs.

Reinstall three fuse clips from original base with

5/16" driver on new base assembly. Make sure

retainer tang is up as shown in picture. Torque to

20-30 in-lbs.

Revision : 1 4 of 8

Step Work Description

Reference Pictures & Comments

Rotate switch base shaft counter-clockwise to put

switch blades in open/OFF position. Place

insulator on mechanism. *Insulators used only on

60 amp models.

Align base mounting holes and install 3 screws

with 5/16" driver. (1 on top, 2 on bottom) Torque

to 20 to 25 in-lbs.

Align fuse base and install 2 mounting screws with

5/16" driver. Torque to 20 to 25 in-lbs.

For fusible switches reinstall insulator and and

retainer screw with 1/4" driver. The right side of

the insulator wraps around the switch base wall as

shown. Torque to 20 to 30 in-lbs. Insulator used

only on 60 amp and 30 amp Canadian models.

For fusible switches position load side fuse clip

connector onto the locator tabs and fasten with

screw using 1/4" driver. Torque to 20-30 in-lb.

LOCATORS

Revision : 1 5 of 8

Step Work Description

Reference Pictures & Comments

Remove arc shield mounting screw with 1/4"

driver. Remove arc shield. Keep screw and arc

shield for reinstallation.

Reattach line side lugs using 5/16" driver. Torque

to 20-30 in-lbs.

If device has a neutral or control pole, reinstall.

Note : Two nibs on the side fit into notches on the

side of the base. Tighten mounting screw to 20 to

25 in-lbs.

Reattach arc shield. Torque to 20-30 in-lbs.

NIB

Revision : 1 6 of 8

Step Work Description

Reference Pictures & Comments

Install line shield. Torque to 20-30 in-lbs.

Install fuses.

Verify all parts are in place and screws torqued to

specification.

Hold in mechanism-defeat lever and actuate

switch 3-4 times verifying switch blades are

opening and closing properly.

Revision : 1 7 of 8

Step Work Description

Reference Pictures & Comments

Prior to energization remove any loose materials

or tools from the switch enclosure. Close cover

before turning power on ahead of switch.

Revision : 1 8 of 8

Eaton ECN16A Replacement Instructions Manual

Eaton ECN16A Replacement Instructions Manual

Eaton ECN16A Replacement Instructions Manual

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