ABB NEMA SIZE 4 Einbauanleitung

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I N S TA L L AT I O N I N S T R U C T I O N S F O R N E M A S I Z E 3

300/400-line combination magnetic starters

Coil

Magnetic

assembly

Adjustment

dial

Overload relay

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Figure 1 — reference diagram (representation only)

CAUTION

Before installing in a nuclear application,

determine that the product is intended

for such use.

WARNING

Disconnect power before installing

or servicing.

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Ratings

Max.

continous

voltage

amp rating

AC volts

600

115

200

230

460/575

Description

An ABB 300-line full voltage magnetic

combination starter consists of a

magnetic contactor with a three-leg block

Coil retainer

Magnetic assembly

Adjustment dial

Heater slots

Overload relay

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Figure 2 — reference diagram (representation only)

overload relay and a manually operated

circuit breaker or disconnect switch. The

disconnect switch may either be fusible

or non-fusible. The non-fusible disconnect

switch provides a means of manually

disconnecting the motor from the line.

The circuit breaker or fusible disconnect

switch provides motor branch short-

circuit protection. The overload relay

provides motor protection against

running and stalled motor overload.

The overload relay is provided with a

yellow trip indicator, located to the right

of the reset arm and visible when the

overload relay is tripped.

Max. HP for AC motors

Single-

Poly-

phase

Features

⁄

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1. Strongbox coil.

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2. Overload relay, incorporates a dial

–

for ±10% field adjustment of tripping

current, so that it is no longer

necessary to change heaters to

eliminate such problems as nuisance

tripping in hot weather.

3. Overload trip indicator.

4. Straight-through wiring.

5. Oversized power terminals will

accommodate up to 1/0 AWG.

6. Starter can be disassembled and

inspected in a matter of seconds.

Fusible disconnect

switch

7. Circuit breaker or disconnect switch

is mechanically interlocked with the

Fuse clip block

enclosure door to prevent opening

the door until the handle is moved

to the OFF position.

Spring clip

Coil retainer

Installation

Before connecting the starter:

1. Remove all packing.

2. Clean magnet mating surfaces

OL relay heater slots

of any dust or foreign matter.

3. Select heaters in accordance with

heater table, which accompanies

each device.

4. Operate movable magnet and

operating arm by pressing on the

nameplate to assure free movement.

5. Mount the starter on a sturdy

vertical support.

6. The overload relay may be reset

manually by depressing and releasing

the reset arm. Overload relays with an

optional normally open contact are

electrically isolated from the normally

closed contact.

7. Provide motor branch circuit protection

in accordance with the National

Electrical Code.

Coil removal

The encapsulated coil is impervious to

moisture, dirt and oil. It resists mechanical

damage and failure due to high humidity.

No tools are required to remove coil.

1. Remove power from device.

2. Press against coil while pulling up

slightly on coil retainers (A—Figure 1)

and move retainers away from coil.

3. Withdraw magnet assembly, coil,

molded cover and movable arm

from device.