TR20BNW-TA Fuji Electric holdings CO.,Ltd, TR20BNW-TA Datasheet

TR20BNW-TA

Manufacturer Part Number

TR20BNW-TA

Description

Thermal Overload Relays

Manufacturer

Fuji Electric holdings CO.,Ltd

Datasheet

1.TR20BNW-TA.pdf (12 pages)

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Standard type thermal overload

relays

■

•

relays

FUJI thermal overload relays are

designed to provide overload protection

to meet the thermal characteristics of

low voltage induction motors.

Adjustable thermal overload relays give

motors positive overcurrent protection.

The starter contacts cannot be held

closing under overload conditions.

However, once the bimetal element has

cooled, the reset button can be

depressed and the motor can be

restarted in the normal manner.

Ordinarily this reset is carried out

manually but the starter can be

changed over to ‘automatic reset’ by

means of a screw-driver.

•

subjected to stringent testing in the

factory to check performance and

actual values are calibrated with the

markings on the adjustable dial.

Consequently, they provide a positive

protection.

•

ambient temperature compensators, so

that their performance will be

maintained in spite of temperature

changes. The ambient temperature is

regulated for 20°C.

•

for either 2- or 3-pole use.

Long time operating type

In the case of loads having large inertia

moments such as blowers, winders or

centrifuges the starting time is

extended.

This will cause the standard-type

thermal overload relay to operate

during starting so isolating the motor.

If necessary FUJI will supply thermal

relays with saturable reactors. (Time-

delay type).

Quick operating type overload relays

The windings of submersible pump and

compressor motors normally have a

smaller overload capacity than those of

standard motors, since they are

generally cooled by the water and other

medium being pumped. Q type

overload relays will operate more

quickly than the standard type in the

face of a locked rotor current.

Fuji Electric FA Components & Systems Co., Ltd./D & C Catalog

Information subject to change without notice

Highly reliable thermal overload

FUJI thermal overload relay is

Relays are also provided with

The heater elements are available

Description

■

Operation

Blank:

Basic type

TR: Standard type

TK: With phase-loss protective device

Frame size

0N to N14

■

•

Type number nomenclature

Isolated NO and NC contacts can be

used with different potentials.

Gold-flashed silver contact assures

high contact reliability (TR-0N/3 to

N14/3).

Stable operating characteristics

protect motors from burnout due to

overload or locked rotor currents.

Easy setting of current value with a

calibrated dial.

Both manual and auto reset available.

A manual trip button is provided to

facilitate sequence testing.

Mechanical trip indication

Trip-free mechanism is provided.

Reset release button and trip indicator

are optional accessories.

Features

TR-N6/3

TR-0N/3

Standard operation

Long time operation

Quick operation

AF-1383

AF00-141

TR-5-1N/3

TR-N8/3

TR–0N H/3 A

■

All FUJI thermal overload relays have

been tested and calibrated at the

factory.

They should not be tampered with or

stripped down at the job site since this

would affect their accuracy. A special

feature of the FUJI starter series is the

ease by which the relay current ratings

can be varied to match the

requirements of the load.

The changeover is effected by simply

turning a dial to the new value required.

The range of adjustment is

approximately 100%–125%–150% and

details are given overleaf.

■

Specify the following:

1. Ordering code

2. Setting range code

See page 01/98.

AF88-1379

Thermal Overload Relays

Warning

Ordering information

AF00-139

General information

Reset

Blank:

No. of heater elements

Blank:

Mounting

Blank:

TR-N3/3

TR-N12H/3

Manual reset

Auto reset

2-element (TR)

3-element (TK, TR-Q)

3-element (TR)

On-contactor

mounting

Separate mounting

TR series

AF00-143

AF00-282

01/97

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TR20BNW-TA Summary of contents

Page 1

Standard type thermal overload relays ■ Description • Highly reliable thermal overload relays FUJI thermal overload relays are designed to provide overload protection to meet the thermal characteristics of low voltage induction motors. Adjustable thermal overload relays give motors positive ...

Page 2

Thermal Overload Relays TR series ■ Ordering code system — — — —— — — — — — Product category Description Code Thermal overload relay T Series category Description Code TR-N ...

Page 3

Features ● Manual trip These relays can be manually tripped for sequence inspection by pressing manual trip bar (TR-0N/3, TR-5-1N/3). A sequence inspection will be performed when the test button is pulled out. When the test button is pressed ...

Page 4

Thermal Overload Relays TR series Standard type ■ Selection guide/Standard type On-contactor 3-element TR-0N/3 mounting (TR13DW) 2-element TR-0N (TR13NW) Separate 3-element TR-0NH/3 mounting (TR13DH) 2-element TR-0NH (TR13NH) Contactor to be combined SC-03 Ampere Code A 0.1 – 0.15 setting range ...

Page 5

Selection guide/Long time operating type On-contactor 3-element – mounting 2-element – Separate 3-element TR-0NLH/3 mounting (TR13FH) 2-element TR-0NLH (TR13LH) Contactor to be combined SC-03 Ampere Code L 0.95 – 1.45 setting range M 1.4 – 2.2 (A) N 1.7 ...

Page 6

Thermal Overload Relays TR series Quick operating type ■ Selection guide/Quick operating type On-contactor 3-element mounting Separate mounting 3-element Contactor to be combined Rated operational 200–240V current (A) 380–440V Ampere setting range (A) Code Specify ...

Page 7

Dimensions, mm Standard and quick operating types TR-0N/3, TR-0NQ On-contactor mounting 60.5 Aux.terminal M3.5 Reset button (Stroke 3mm Main terminal M3.5 TR-0NH/3 67.5 7.5 10 7.7 7 Aux.terminal M3.5 Reset button (Stroke 3mm) 35 4.5 84 ...

Page 8

Thermal Overload Relays TR series ■ Dimensions, mm Standard and quick operating types TR-6N/3 On-contactor mounting Reset button 80.8 (Stroke 4mm) Aux.terminal M3 118 5 TR-N6H/3 11 Reset button (Stroke 4mm) Aux.terminal M3.5 Mounting hole 2- ...

Page 9

Dimensions, mm Base unit for separate mounting SZ- 67 Mass: 40g SZ- 67 Mass: 50g ■ Mass/Standard and quick operating types On-contactor mounting Separate mounting Type Mass Type TR-0N ...

Page 10

Thermal Overload Relays TR series ■ Dimensions, mm Long time operating type TR-N3L, N3L/3 20.5 20.5 97.5 5 Reset button 67.4 (Stroke 4mm) Aux. terminal M3.5 5 (For 2 element type 4/T2 56.5 *1 140 (For ...

Page 11

Dimensions, mm Optional accessories Trip indicator SZ-L100 SZ-L200 Approx.140 3.5 11 Approx.440 SZ-L100N2 SZ-L200N2 11 Approx. 8 Approx. ■ Characteristic curves These curves show cold starting characteristics. ● Standard type TR-0N, 5-1N, TR-0N/3, 5-1N/3, TR-0NH, 5-1NH, TR-0NH/3, 5-1NH/3 50 ...

Page 12

Thermal Overload Relays TR series ■ Characteristic curves These curves show cold starting characteristics ● Long time operating type (When setting at the center dial current) TR-0NL, 5-1NL TR-0NL/3, 5-1NL/3 TR-0NLH, 5-1NLH TR-0NLH/3, 5-1NLH ...

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