Motor Protection Relays

Motor protection relays that protect your motor against burnout.

Can be used for protection against motor burnout during overload or locked rotor. Offers a wide range of functions, including protection against overload and phase loss, time lag, quick connect.

Motor Protection Relays without Phase Failure Protection

Motor Protection Relays without Phase Failure Protection

Protects motors against overload and locked rotor, securing safe operation.
Standard model complies with Japanese and many international standards.

Product Specification

Specifications

TH-T18KP_ _ _ A

TH-T25KP_ _ _ A

TH-T50KP_ _ _ A

TH-T65KP_ _ _ A

TH-T100KP_ _ _ A

TH-N120KP_ _ _ A

TH-N120TAKP_ _ _ A

TH-N220RHKP_ _ _ A

TH-N400RHKP _ _ _ A

TH-N600KP_ _ _ A a

Rated data

Max. setting current

A

18

26

50

65

100

100

150

220

400

800

Range of setting current

A

0.12–18

0.24–26

24–50

12–65

54–100

34–100

85–150

65–250

85–400

200–800

Rated insulation voltage

V

690

690

690

690

690

690

690

1000

1000

690

Auxiliary contacts

  

For all types: 1 NO + 1 NC

Max. heater dissipation per current path

Min. settingW

0.8

1.5

1.6

2.4

2.5

2.5

3.2

2.5

2.5

2.5

Max. settingW

1.8

3.0

3.2

5.5

6.0

7.1

8.6

6.0

6.0

6.0

Rated operating current of auxiliary contacts

Category AC-15

NOcontact

120 V

A

2

2

2

2

2

2

2

2

2

2

240 V

A

1

1

1

1

1

1

1

1

1

1

500 V

A

0.5

0.5

0.3

0.5

0.5

0.5

0.5

0.5

0.5

0.5

NCcontact

120 V

A

2

3

3

3

3

3

3

3

3

3

240 V

A

1

2

2

2

2

2

2

2

2

2

500 V

A

0.5

1

0.3

1

1

1

1

1

1

1

Category DC-13

48 V

A

0.4

0.5

1

1

1

0.5

0.5

0.5

0.5

0.5

110 V

A

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

220 V

A

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

Sizes

Main terminal screw size

Line side

mm

—

M4

M5

M6

M6

M8

M8

—

—

M4

Load size

mm

M3.5

M4

M5

M6

M6

M8

M8

M10

M12

M4

Max. conductorsize

Main

Line side

mm²

—

6

14

38

60

—

—

6

Load side

mm²

2.5

6

14

38

60

70

240

6

Busbar

Line side

mm

—

10.2

17

17

20

20

—

—

—

Load side

mm

7.5

10.2

13.3

17

15

20

20

25

30

—

Auxiliary contacts

mm²

2.5

2.5

2

2

2

4

4

4

4

4

Bimetal heating

  

Direct

Direct

Direct

Direct

Direct

Direct

Direct

Via CTs

Via CTs

Via CTs a

Weight

kg

0.11

0.16

0.2

0.26

0.32

0.48

0.75

2.5

2.7

0.14

Dimensions (WxHxD)

mm

45x55x76.5

63x51x69

74.3x72x83.5

89x57x83.5

89x73.5x83.5

103x67x105

112x87x105

144 x114 x180

144x160x194

63x42x83.5

Order information Art. no.

See page <?> for order information

 

  1. Used with current transformer (to be supplied by the customer), for further information, see table on bottom of the page.

 

Optional Parts and Accessories

Optional Parts and Accessories

There are many optional units for motor protection relays.