ABB TF65, TF96 Data Sheet

Data sheet

Thermal overload relay TF65 and TF96

Thermal overload relays are economic
electromechanical protection devices for
the main circuit. They are used mainly
to protect motors against overload and
phase failures. Starter combinations are
setup together with contactors.

Description

– Overload protection – trip class 10
– Phase loss sensitivity
– Temperature compensation from -25 … +60 °C
– Adjustable current setting for overload protection
– Automatic or manual reset selectable
– Suitable for three- and single-phase application
– Trip-free mechanism
– Status indication
– STOP and TEST function
– Direct mounting onto block contactors
– Sealable operating elements

2CDC231004V0013

Order data

TF65 and TF96 screw terminal
For AF contactors

Setting range AType Order code

22.0 ... 28.0 TF65-28 1SAZ811201R1001 1 0.456

25.0 ... 33.0 TF65-33 1SAZ811201R1002 1 0.456

30.0 ... 40.0 TF65-40 1SAZ811201R1003 1 0.456

36.0 ... 47.0 TF65-47 1SAZ811201R1004 1 0.456

44.0 ... 53.0 TF65-53 1SAZ811201R1005 1 0.456

50.0 ... 60.0 TF65-60 1SAZ811201R1006 1 0.466

57.0 ... 67.0 TF65-67 1SAZ811201R1007 1 0.466

40.0 ... 51.0 TF96-51 1SAZ911201R1001 1 0.620

48.0 ... 60.0 TF96-60 1SAZ911201R1002 1 0.620

57.0 ... 68.0 TF96-68 1SAZ911201R1003 1 0.620

65.0 ... 78.0 TF96-78 1SAZ911201R1004 1 0.620

75.0 ... 87.0 TF96-87 1SAZ911201R1005 1 0.620

84.0 ... 96.0 TF96-96 1SAZ911201R1006 1 0.630

Packing
unit

PCE

Weight
per PCE

kg

2CDC231005V0013

Suitable for mounting on:
TF65: AF40, AF52, AF65
TF96: AF80, AF96

Functional description

3~1~

A

1

1

Terminals 1L1, 3L2, 5L3

2

Sealable operating elements

3

Current setting range

Adjustable current setting for overload protection

2CDC232006F0013

2

3

4

5

6

7

8

9

4

TEST

Status indication

5

RESET

Automatic or manual reset selectable

6

Signaling contacts 97-98

7

Terminals 2T1, 4T2, 6T3

8

Tripping contacts 95-96

9

STOP

Application / internal function

The thermal overload relays are three pole relays with bimetal tripping elements (1 per pole). The motor current flows through
the bimetal tripping elements and heats them directly and indirectly. In case of an overload (over current), the bimetal
elements become bent as a result of the heating. This leads to a release of the relay and a change of the contacts switching
position (95-96 / 97-98). The contact 95-96 is used to control the load contactor.

The overload relays have a setting scale in Amperes, which allows the direct adjusting of the relay without any additional
calculation. In compliance with international and national standards, the setting current is the rated current of the motor
and not the tripping current (no tripping at 1.05 x I, tripping at 1.2 x I; I = setting current). The relays are constructed in way
that they protect themselves in the event of an overload. The overload relay has to be protected against short-circuit. The
appropriate short-circuit protective devices are shown in the table.

Operation mode

2CDC232001F0010

Contact 95-96 Contact 97-98 Status indication Comment

Trip state open closed

RESET state closed open ON

TEST manual reset mode open closed

TEST auto reset mode open closed while TEST is operated

STOP while device is in trip state open closed STOP button has no function

STOP while device is in RESET state open open while STOP button is pressed

Wiring diagram

RESET

M

9795

2T1 4T2 6T3

2 - 2CDC106069D0201

TEST

STOP

9896

2CDC232006F0009

Resistance and power loss per pole and short-circuit protective devices

switching frequency

(Op/h)

34.8

1.37"

4

0.08"

55.7

2.19"

10.1

0.40"

101.4 3.45"

45.8

1.80"

12.1

0.47"

106.3 4.19"

Type Setting range Resistance per

pole

lower value

A

upper value

A

mΩ

Power loss Short-circuit

protective device

at lower value

at upper value Wcoordination type 2

W

TF65-28 22.0 28.0 3.937 1.9 3.1 80 A, gG Type Fuses

TF65-33 25.0 33.0 3.474 2.2 3.8 80 A, gG Type Fuses

TF65-40 30.0 40.0 2.321 2.1 3.7 100 A, gG Type Fuses

TF65-47 36.0 47.0 1.645 2.1 3.6 125 A, gG Type Fuses

TF65-53 44.0 53.0 1.292 2.5 3.6 125 A, gG Type Fuses

TF65-60 50.0 60.0 0.939 2.3 3.4 125 A, gG Type Fuses

TF65-67 57.0 67.0 0.759 2.5 3.4 160 A, gG Type Fuses

TF96-51 40.0 51.0 1.647 2.6 4.3 125 A, gG Type Fuses

TF96-60 48.0 60.0 1.316 3.0 4.7 160 A, gG Type Fuses

TF96-68 57.0 68.0 0.992 3.2 4.6 160 A, gG Type Fuses

TF96-78 65.0 78.0 0.632 2.7 3.8 200 A, gG Type Fuses

TF96-87 75.0 87.0 0.516 2.9 3.9 200 A, gG Type Fuses

TF96-96 84.0 96.0 0.397 2.8 3.7 250 A, gG Type Fuses

Technical diagrams

Intermittent periodic duty

140

120

100

80

60

40

t = 3 s

a

t = 5 s

a

20

0

020406080100 (%)

Motor starting time

t = 1 s

a

t = 1.5 s

a

t = 0.5 s

a

duty ratio

2CDC232005F0211

Dimensions

in mm and inches

1.81"

87.7 3.45"

46

67.8 2.67"

TF65

1.81"

46

60.6 3.57"

70.3 2.77"

TF96

16.6 0.65"

16.6 0.65"

2T1 4T2 6T3

10.4

0.41"

37.4

1.47"

54.9

2.16"

2T1 4T2 6T3

17.9

0.70"

54.9

2.16"

44.9

1.77"

69.9

2.75"

7 0.28"

0.74"

18.9

10 0.39"

65 2.56"

83.5 3.29"

102.8 4.05"

106.1 4.18"

106.9 4.21"

2.30"

83.5 3.29"

102.8 4.05"

106.1 4.18"

106.9 4.21"

2.5

0.10"

58.5

67.5 2.66"

0.74"

18.9

2CDC232010F0012

2CDC232011F0012

2CDC106069D0201 - 3