546e4003 (web)

�

Installation guide

Dimensions1P 2P 3P 4P

DB

1164

43

Z

X

DB

1�57

48

YY

XD

B1�

5749

X

Y

DB

1�57

50

Y

X

DB

1�57

51

Y

X

Mounting on plate

1P 2P

DB

1164

48

Y

X

DB

1164

49

or

Y

X

3P 4P

DB

1164

50

Y

X

DB

1164

51

or

x

YY

X

Mounting on DIN rail

DB

1164

54

xX

Z

DB

1164

5�

x

YY

X

DB

1164

53

xX

DimensionsEasyPact 100

version: �.0 546E4003.indd

3

Door cut-out (small)1P, 3P 2P 4P

DB

1164

55

DB

1164

56

DB

1164

57

DB

1164

58

Door cut-out (large)

1P 2P

DB

1164

59

DB

1164

60

DB

1164

61

x

YY

X

3P 4P

DB

1164

6�

DB

1164

63

YY

X

YY

X

YY

X

YY

X

YY

X

YY

X

x

YY

Xx

YY

X

x

YY

Xx

YY

X x

YY

Xx

YY

X

X

Z

xX

Z


4

Installation guide

Dimensions (EZD250)2P, 3P 4P

DB

1164

64

X

Z

DB

1164

65

DB

1164

66

Dimensions (EZDV250)

3P 4P 3P, 4P ELCB

DB

1164

67

DB

1164

68

DB

1164

69

DB

1164

70

Mounting on plate2P, 3P 4P

DB

1164

71

DB

1164

7�

19.550

102

144

4422

100105

??35 35

52.5

25

YY

X19.5

50102

144

4422

100105

??35 35

52.5

25

YY

X

YY

X

YY

X

YY

X

YY

X x

YY

Xx

YY

X

YY

X

YY

X

Y

xX

Y

xX x

YY

Xx

YY

X

Dimensions EasyPact 250 EZD250/EZDV250

X

Z


5

Door cut-out (small)2P, 3P 4P

DB

1164

73

DB

1164

74

DB

1164

75


2P, 3P 4P

DB

1164

76

DB

1164

77

DB

1164

78

Dimensions (mm)A B C D E F

EZD 2/3P 60 65 85.5 - 67 61EZD 4P 68 73 95 - 75 69EZDV 3P 45.5EZDV 4P 80.5

xX

Z

xX

Z

x

YY

Xx

YY

X

YY

X

YY

X

xX

Z

xX

Z

x

YY

Xx

YY

X x

YY

Xx

YY

X


6

Installation guide

Dimensions 3P 4P

DB

1164

79

DB

1164

80

DB

1164

81

Mounting on plate3P 4P

DB

1164

8�

DB

1164

83

X

Z

X

Z

x

Y

Xx

Y

X

YY

X

YY

X

x

YY

Xx

YY

X x

YY

Xx

YY

X

Dimensions EasyPact 400


7

Door cut-out (small) 3P 4P

DB

1164

84

DB

1164

85

DB

1164

86


3P 4P

DB

1164

87

DB

1164

88

x

YY

X

DB

1164

89

X

Z

X

Z

YY

X

YY

X x

Y

Xx

Y

X

xX

Z

xX

Z

x

YY

Xx

YY

X


8

Installation guide

Terminal shields

DB

1164

90

DB

1164

91

3P

DB

1164

9�

4P

Phase barriers

DB

1164

93

DB

1164

94

2P

DB

1164

95

3P

DB

1164

96

4P

Direct rotary handle 3P 4P 3P, 4P

DB

1164

97

DB

1164

98

x

YY

X

DB

1164

99

x

YY

X

DB

1165

00

X

Y

Extended rotary handle 3P, 4P 3P, 4P

DB

1165

01

DB

1165

0�

DB

1165

03

xX

Y

xX

Z

xX

Z

YY

X

YY

X x

YY

Xx

YY

X

xX

Z

xX

Z

x

YY

Xx

YY

X x

YY

Xx

YY

X x

YY

Xx

YY

X

xX

Z

xX

Z

xX

Z

xX

Z

x

YY

Xx

YY

X

DimensionsEasyPact 100 accessories


9

Terminal shields Phase barriers3P, 4P 3P, 4P

DB

1165

04

xX

Z

DB

1165

05

DB

1165

06

xX

Z

DB

1165

07

Direct rotary handle

3P 4P 3P, 4P

DB

1165

08

xX

Z

DB

1165

09

YY

X

DB

1165

10

YY

X

DB

1165

11

Extended rotary handle

3P, 4P 3P, 4P

DB

1165

1�

xX

Z

DB

1165

13

Y

X

DB

1165

14

x

Y

X

Dimensions (mm)A B C D E

EZD 2/3P 58.5 55 93 to 97 145 137 to 414EZD 4P 66.5 63 101 to 105 153 145 to 4��EZDV 3P/4P

x

YY

Xx

YY

X x

Y

Xx

Y

X

x

YY

Xx

YY

X

EasyPact 250 accessories


10

Installation guide

Terminal shields Phase barriers

DB

1165

15

DB

1165

16

DB

1165

17

DB

1165

18

Direct rotary handle

3P 4P 3P, 4P

DB

1165

19

xX

Z

DB

1165

�0

x

YY

X

DB

1165

�1

x

Y

X

DB

1165

��

x

YY

X

Extended rotary handle

3P, 4P 3P, 4P

DB

1165

�3

xX

Z

DB

1165

�4

DB

1165

�5

xX

Z

xX

Z

x

YY

Xx

YY

X xX

Z

xX

Z

x

YY

Xx

YY

X

YY

X

YY

X x

YY

Xx

YY

X

Dimensions EasyPact 400 accessories


11

When installing a circuit breaker, minimum distances (safety clearances) must be maintained between the device and panels, bars and other protection devices installed nearby. These distances, which depend on the ultimate breaking capacity, are defined by tests carried out in accordance with standard IEC 60947-2.If installation conformity is not checked by type tests, it is also necessary to:

use insulated bars for circuit-breaker connectionsblock off the busbars using insulating screens.

For EasyPact breaker, terminal shields, inter-phase barriers or an insulation isolator are recommended and may be mandatory depending on the utilisation voltage and the type of installation.

Minimal distance between two adjacent circuit breakers

E88

�30

Minimal distance between the circuit breaker and top, bottom or side panels

Minimal distance between the circuit breaker and front or rear panels

DB

1165

�6

DB

1165

�7

Dimensions (mm) Bare or painted sheet metal:

insulated bars bare busbar under voltageEasyPact circuit breaker C1 D1 D2 D1 D2 E

EZD100B/F/N 40 45 45 75 45 40EZD100H 40 60 45 75 45 40EZD�50F/N-EZDV�50N 50 60 45 140 45 4�.5EZD�50H-EZDV�50H 50 80 45 140 45 4�.5EZD400N 50 1�0 100 �50 100 40EZD400H 80 140 100 �50 100 40The mandatory distances when installing EasyPact circuit breakers are calculated from the device case, not taking into account the terminal shields or the phase barriers.

E44

458

Installation in an enclosureEasyPact circuit breakers can be installed in a metal enclosure together with other devices (contactors, motor-protection circuit breakers, LEDs, etc.).Minimum enclosure dimensions (3P)Circuit breakers Height (mm) Depth (mm) (1) Width (mm)

EZD100B/F/N �00 90 155EZD100H �15 90 155EZD�50F/N-EZDV�50N �70 90 �05EZD�50H-EZDV�50H �90 90 �05EZD400N 480 160 �40EZD400H 500 160 300

Installation in an enclosure. (1) With front door.

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Safety clearances and minimum distances


1�version: �.0 546E4003.indd

13

Ambient temperatureEasyPact devices are equipped with fixed thermal-magnetic trip units.

EasyPact has been particularly designed to hold 100 % In at 50 °C without tripping in normal condition (except for earth-leakage circuit breakers).

EasyPact circuit breakers may be used between -25 °C and +70 °C.EasyPact circuit breakers should be put into service under normal ambient

operating temperature conditions. Exceptionally, the circuit breaker may be put into service when the ambient temperature is between -35 °C and -25 °C.

the permissible storage-temperature range for EasyPact circuit breakers in the original packing is -35 °C to +85 °C.

To determine tripping times using time/current curves, use Ir values corresponding to the thermal setting on the device, corrected as indicated in the tables below.

Rated current (A)

25 °C 40 °C 45 °C 50 °C 55 °C 60 °C 65 °C 70 °C

EZD10015 17.0 15.7 15.3 15.0 14.7 14.6 14.� 13.816 18.1 16.7 16.3 16.0 15.7 15.6 15.1 14.7�0 �1.8 �0.4 �0.� �0.0 19.7 19.� 18.9 18.5�5 �6.9 �5.7 �5.3 �5.0 �4.7 �4.5 �4.3 �4.030 34.5 31.4 30.7 30.0 �9.4 �9.1 �8.5 �8.03� 36.8 33.5 3�.7 3�.0 31.4 31.0 30.4 �9.940 4�.8 40.9 40.4 40.0 39.5 38.0 37.6 37.145 48.8 46.9 45.9 45.0 44.4 43.3 4�.6 41.950 54.� 5�.1 51.0 50.0 49.3 48.1 47.3 46.660 64.4 61.8 60.9 60.0 59.0 57.5 56.6 55.763 67.6 64.9 63.9 63.0 6�.0 60.4 59.4 58.575 78.6 76.8 75.9 75.0 73.5 70.4 69.8 69.180 84.4 8�.� 81.1 80.0 78.6 77.3 76.7 76.1100 109 103 101 100 99 94 94 93EZD250

63 77 69 66 63 60 56 53 4980 93 86 83 80 77 74 71 68100 115 106 103 100 96 93 89 851�5 148 135 130 1�5 1�0 114 109 103150 174 160 155 150 145 139 134 1�8160 186 171 166 160 154 148 14� 136175 �07 188 18� 175 168 161 153 145�00 �36 �15 �08 �00 19� 184 175 166��5 �68 �44 �35 ��5 �15 �05 194 18��50 �97 �70 �60 �50 �39 ��8 �15 �03EZDV250

63 7� 63 60 56 53 49 44 3980 89 80 77 73 70 66 6� 58100 113 100 95 91 86 80 74 681�5 140 1�5 1�0 114 108 10� 95 88150 163 150 145 141 136 131 1�5 1�0160 177 160 154 148 141 135 1�7 1�0175 194 175 168 161 154 146 138 1�6�00 ��3 �00 19� 183 175 165 155 144��5 �45 ��5 �18 �11 �03 196 180 16��50 �77 �50 �40 �30 ��0 �09 198 180EZD400

�50 �93 �68 �60 �50 �40 ��8 �18 �08300 351 3�1 31� 300 �88 �73 �61 �493�0 374 34� 333 3�0 307 �91 �78 �66350 410 375 364 350 336 319 305 �91400 468 4�8 416 400 384 364 348 33�

b

bb

b

Temperature derating


14

Installation guide

EasyPact 100 TM trip units15 A 20 A 25 A

DB

1157

30

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

31

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

3�

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

30 A 40 A 50 A

DB

1157

33

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

34

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

35

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

60 A 75 A 80 A

DB

1157

36

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

37

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

38

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

Tripping curves


15

EasyPact 100 TM trip units (cont.)100 A

DB

1157

39

.7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir.5

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

EasyPact 250 TM trip units63-80-100-125 A 150-160-175-200 A 225-250 A

DB

1157

40

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

41

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

DB

1157

4�

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)

EasyPact 400 TM trip units 250-300-320-350-400 A

DB

1157

43

.5 .7 .71 10 20 30 50 70 100 2003002 3 4 5

I / Ir

.005

.002

.001

.01

.1

1

1020

50100200

5001 0002 000

5 00010 000

2

5

.2

.5

.02

.05

t(s)


16

The exceptional limiting capacity of the EasyPact range greatly reduces the forces created by fault currents in devices.The result is a major increase in breaking performance.

The Ics value, defined by IEC standard 60947-2, is guaranteed by tests comprising the following operations:

break three times consecutively a fault current equal from 25% to 100% of Icucheck that the device continues to function normally:it conducts the rated current without abnormal temperature risesprotection functions perform within the limits specified by the standardsuitability for isolation is not impaired.

Longer service life of electrical installationsCurrent-limiting circuit breakers greatly reduce the negative effects of short-circuits on installations.Thermal effectsLess temperature rise in conductors, therefore longer service life for cables.Mechanical effectsReduced electrodynamic forces, therefore less risk of electrical contacts or busbars being deformed or broken.Electromagnetic effectsLess disturbances for measuring devices located near electrical circuits.

Economy by means of cascadingCascading is a technique directly derived from current limiting. Circuit breakers with breaking capacities less than the prospective short-circuit current may be installed downstream of a limiting circuit breaker. The breaking capacity is reinforced by the limiting capacity of the upstream device.It follows that substantial savings can be made on downstream equipment and enclosures.

Current-limiting curvesThe current-limiting capacity of a circuit breaker is expressed by two curves which are a function of the prospective short-circuit current (the current which would flow if no protection devices were installed):

the actual peak current (limited current),thermal stress (A�s), i.e. the energy dissipated by the short-circuit in a conductor

with a resistance of 1 W.

Current limiting curves 380/415 V AC Thermal-stress curves 380/415 V AC

DB

1157

44

DB

1157

45

bbvvv

bb

2 3 4 6 10 20 60 10030 404

5

678

10

20

30

40

80

EZD400

EZD250

EZD100

EZDV250

5060

kA rms

kA peak

2 3 4 6 10 20 60 10030 404

5

678

10

20

30

40

80

EZD400

EZD250

EZD100

EZDV250

5060

kA rms

kA peak

5

5

32

105

5

32

106

3

2

107

2 3 4 6 10 20 60 10030 40kA rms

A2s

EZD400

EZD250

EZD100

EZDV250

5

5

32

105

5

32

106

3

2

107

2 3 4 6 10 20 60 10030 40kA rms

A2s

EZD400

EZD250

EZD100

EZDV250

Installation guide

The limiting capacity of a circuit breaker is its aptitude to limit short-circuit currents.

DB

1165

�8Current-limiting curves


17

What is cascading?Cascading is the use of the current limiting capacity of circuit breakers at a given point to permit installation of lower-rated and therefore lower-cost circuit breakers downstream.The upstream compact circuit breakers acts as a barrier against short-circuit currents. In this way, downstream circuit breakers with lower breaking capacities than the prospective short-circuit (at their point of installation) operate under their normal breaking conditions.Since the current is limited throughout the circuit controlled by the limiting circuit breaker, cascading applies to all switchgear downstream. It is not restricted to two consecutive devices.

General use of cascadingWith cascading, the devices can be installed in different switchboards. Thus, in general, cascading refers to any combination of circuit breakers where a circuit breaker with a breaking capacity less than the prospective Isc at its point of installation can be used. Of course, the breaking capacity of the upstream circuit breaker must be greater than or equal to the prospective short-circuit current at its point of installation.The combination of two circuit breakers in cascading configuration is covered by the IEC 60947-2.

Coordination between circuit breakersThe use of a protective device possessing a breaking capacity less than the prospective short-circuit current at its installation point is permitted as long as another device is installed upstream with at least the necessary breaking capacity.In this case, the characteristics of the two devices must be coordinated in such a way that the energy let through by the upstream device is not more than that which can be withstood by the downstream device and the cables protected by these devices without damage.Cascading can only be checked by laboratory tests and the possible combinations can be specified only by the circuit breaker manufacturer.

220/240 V network downstream from a 380/415 V networkFor 1P + N or 2P circuit breakers connected between the phase and neutral on a 380/415 V network, with a TT or TNS neutral system, consult the ��0/�40 V cascading table to determine cascading possibilities between upstream and downstream circuit breakers.

Economy by means of cascadingThanks to cascading, circuit breakers with breaking capacities less than the prospective short-circuit current may be installed downstream from a current limiting circuit breaker.It follows that substantial savings can be made on downstream switchgear and enclosures.

Cascading tablesMerlin Gerin cascading tables are:

drawn up on the basis of calculations (comparison between the energy limited by the upstream device and the maximum permissible thermal stress for the downstream device)

verified experimentally in accordance with IEC standard 60947-2.For distribution systems with ��0/�40 V, 380/415 V and 440 V between phases, the tables of the following pages indicate cascading possibilities between upstream Compact/EasyPact and downstream Multi 9 and EasyPact circuit breakers.

b

b

DB

1165

�9D

B11

65�9

Cascading


18

Installation guideD

B11

6530

Network 220/240 VUpstream EZD100F EZD100N EZD100HBreaking capacity kA rms 25 25 100

Downstream Enhanced breaking capacityNC45 6 10 10 15NC45N 10 15 15 �5NC45H 15 �5 �5 50C60a 10 �5 �5 50C60N �0 �5 �5 65C60H 30 - - 65QO-E 10 �5 �5 50

Upstream EZD250F EZD250NEZDV250N

EZD250HEZDV250H

NS250H

Breaking capacity kA rms 25 50 85 100Downstream Enhanced breaking capacityEZD100B 10 - - 15 �0EZD100F �5 - 30 30 50EZD100N �5 - 30 36 50EZD100H 100 - - - -

Upstream EZD400N EZD400H NBD400NBD630

NS400NNS630N

NS400HNS630H

Breaking capacity kA rms 85 100 85 85 100Downstream Enhanced breaking capacityEZD100B 10 �0 �0 �0 �0 �0EZD100F �5 50 50 50 50 50EZD100N �5 50 50 50 50 50EZD100H 100 - - - - -EZD�50F �5 50 50 50 50 50EZD/EZDV�50N 50 85 85 85 85 85EZD/EZDV�50H 85 - 100 - - 100

Network 380/415 VUpstream EZD100F EZD100N EZD100HBreaking capacity kA rms 10 15 30

DB

1165

31

Downstream Enhanced breaking capacityNC45 5 6 8 15NC45N 8 10 10 15NC45H 10 - 15 15C60a 6 10 15 15C60N 10 - 15 15C60H 15 - - 15QO-E 5 10 15 15GV�M 15 - - -

Upstream EZD250F EZD250NEZDV250N

EZD250HEZDV250H

NS250H

Breaking capacity kA rms 18 25 36 70Downstream Enhanced breaking capacityEZD100B 7.5 - - - 15EZD100F 10 - 15 15 30EZD100N 15 - �0 �5 50EZD100H 30 - - 36 70


NS400NNS630N

NS400HNS630H

Breaking capacity kA rms 36 50 30 50 70Downstream Enhanced breaking capacityEZD100B 7.5 - - - - -EZD100F 10 - - - - -EZD100N 15 �0 �0 �0 �0 30EZD100H 30 36 36 - 45 50EZD�50F 18 �0 �0 �0 �0 �0EZD/EZDV�50N �5 36 36 30 36 40EZD/EZDV�50H 36 - - - 45 50

Cascading tables


19

Network 440 VUpstream EZD250F EZD250N

EZDV250NEZD250HEZDV250H

Breaking capacity kA rms 15 20 25Downstream Enhanced breaking capacityEZD100B 5 - - -EZD100F 7.5 - - -EZD100N 10 - 15 15EZD100H �0 - - -


NS400NNS630N

NS400HNS630H

Breaking capacity kA rms 20 40 30 42 65Downstream Enhanced breaking capacityEZD100B 5 - - - - -EZD100F 7.5 - - - - -EZD100N 10 15 15 15 15 �5EZD100H �5 - 30 30 30 30EZD�50F 15 �0 �0 - - -EZD/EZDV�50N �0 - �5 �5 �5 30EZD/EZDV�50H �5 - 30 30 30 30


�0

Installation guide

A circuit supplying a motor may include one, two, three or four switchgear or controlgear devices fulfilling one or more functions.

When a number of devices are used, they must be coordinated to ensure optimum operation of the motor.Protection of a motor circuit involves a number of parameters that depend on:

the application (type of machine driven, operating safety, starting frequency, etc.)the level of service continuity imposed by the load or the applicationthe applicable standards to ensure protection of life and property.

The necessary electrical functions are of very different natures:short circuit protectionoverload protection dedicated for motorcontrol (generally with high endurance levels)isolation.

Protection functionsDisconnection functions:Isolate a motor circuit prior to maintenance operations.Short-circuit protection:Protect the starter and the cables against major overcurrents (> 10 In).This type of protection is provided by a circuit breaker.Control:Start and stop the motor and, if applicable:

gradual accelerationspeed control.

Overload protection:Protect the starter and the cables against minor overcurrents (< 10 In).Thermal relays provide protection against this type of fault. They may be:

integrated in the short-circuit protective deviceseparate.

Additional specific protection:limitative fault protection (while the motor is running)preventive fault protection (monitoring of motor insulation with motor off).

Overloads (I < 10 In)An overload may be caused by:

an electrical problem, for instance on the mains (loss of a phase, voltage outside tolerances, etc.)

a mechanical problem, for instance excessive torque due to abnormally high demands by the process or motor damage (bearing vibrations, etc.).A further consequence of these two origins is excessively long starting.Impedance short-circuit (10 < I < 50 In)Deterioration of motor-winding insulation is the primary cause.Short-circuit (I > 50 In)This type of fault is relatively rare. A possible cause may be a connection error during maintenance.Protection against insulation faultsThis type of protection may be provided by:

a residual current device (RCD)an insulation monitoring device (IMD).

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Motor protection - circuit breaker selection Circuit breakers Circuit breakers Circuit breakersMotors 220/230 V 240 V Type Rating 380/400 V 415 V Type Rating 440 V Type RatingP (kW) I (A) I (A) In (A) I (A) I (A) In (A) I (A) In (A)

0.37 � 1.8 EZD100 �0 1.� 1.1 EZD100 �0 1 EZD100 �00.55 �.8 �.6 �0 1.6 1.5 �0 1.4 �00.75 3.5 3.� �0 � 1.8 �0 1.7 �01.1 5 4.5 �0 �.8 �.6 �0 �.4 �01.5 6.5 6 �0 3.7 3.4 �0 3.1 �0�.� 9 8 �0 5.3 4.8 �0 4.5 �03 1� 11 �0 7 6.5 �0 5.8 �04 15 14 �0 9 8.� �0 8 �05.5 �1 19 40 1� 11 �0 10.5 �07.5 �8 �5 60 16 14 �0 13.7 �010 36 33 60 �1 19 40 19 4011 39 36 80 �3 �1 40 �0 4015 5� 48 80 30 �8 60 �6.5 6018.5 63 59 80 37 34 60 33 60�� 75 70 EZD�50 1�5 43 40 80 39 6030 100 95 160 59 55 EZD�50 1�5 5� 8037 1�5 115 �50 7� 66 150 63 EZD�50 1�545 150 140 �50 85 80 160 76 15055 180 170 EZD400 300 105 100 �00 90 16075 �50 �35 - 140 135 �50 1�5 �5090 300 �70 - 170 160 EZD400 300 140 �50110 360 330 - �10 �00 350 178 EZD400 300


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EasyPact circuit breaker is suitable for capacitor protection following the rules below:

Inc = Nominal current of the capacitor

Inc = Nominal Current Capacitor (A)Qc = Reactive power (kVAR)U = Nominal Voltage (V)

Inb = Nominal current of the circuit breaker (EZD)Inb = 1.36 x Inc for standard equipmentInb = 1.5 x Inc for overrated type equipmentInb = 1.12 x Inc for detuned type equipment: 2.7 tuningInb = 1.19 x Inc for detuned type equipment: 3.8 tuningInb = 1.31 x Inc for detuned type equipment: 4.3 tuningthe short-circuit (magnetic) protection-setting thresholds must enable passage of

the energising transients: 10 x Inc for standard, overrated and detuned type equipment.

Icu = Ultimate breaking capacity of the circuit breaker (EZD) Icu short-circuit level is given by the installation.

ExampleTable at 400 V AC - 3 phases 50 Hz for standard equipment.

Reactive power Inc Inb Breaking capacity to Circuit Breaker(kVAR) (A) (A) 15 kA 30 kA

7.5 11 15 EZD100N3015 EZD100H301510 14 �0 EZD100N3020 EZD100H302015 �� 30 EZD100N3030 EZD100H3030�0 �9 40 EZD100N3040 EZD100H304030 43 60 EZD100N3060 EZD100H306040 58 80 EZD100N3080 EZD100H308050 7� 100 EZD100N3100 EZD100H310060 87 118 EZD250F3125 EZD250H312575 108 147 EZD250F3150 EZD250H3150100 144 196 EZD250F3200 EZD250H3200

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Installation guide Capacitor protection

Inc = QcU√3


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