Crouzet 84873034 Data Sheet

Phase control

➜ EWS2

■ Space savings, accurate measurement and optimized

functions all improve the efficiency of your electrical
installation

■ Control : You simply install your EWS2 phase control

relay and without any adjustment you can monitor the
loss or inversion of one of the phases

■ Safety : The EWS2 range enables you to choose the

level of safety for your installation by using versions
with 1, 2 or 3 output changeovers

■ Self-powered : Simple to install, EWS2 control relays

use the controlled mains supply for their own power
supply voltage

Part numbers

Type Output relay Code

EWS2 2 changeovers

General characteristics

Input

Operating range
Operating range
Frequency 50 / 60 Hz

Maximum consumption 28 VA

Output

Output relay 2 changeovers
Type of contacts No cadmium
Nominal rating 8 A
Maximum breaking voltage

Nominal breaking capacity 2 000 VA
Min. breaking current

Electrical life (number of operations)
Maximum rate (at full load) 360 operations / hour

Mechanical life (operations)
Pick-up delay T1 ≤ 650 ms
Turn-off delay T2 < 300 ms
Connection capacity - without ferrule

Connection capacity - with ferrule

Max. tightening torque (IEC/EN 60947-1) 0.6

Environment

Operating temperature range (
Storage temperature (
Housing material Self-extinguishing
Protection (IEC/EN 60529) - Casing IP40
Protection (IEC/EN 60529) - Term. block IP20
Dielectric strength (IEC/EN 60255-5) 2.5 KV / 1 mn / 1 mA / 50 Hz
Insulation coordination (IEC/EN 60664-1) Overvoltage category III, degree of pollution 3 : 4 KV / 3
Weight (g) 86

o

0

C)

C)

➞ 3 x 400 V

3 x 230
3 x 200

➞ 3 x 484 V

a

250 V

10 mA / 5 V

5

at 8A/250 V

10

6

10 x 10

➞ 4 mm

1 x 0.5

➞ 2.5 mm

2 x 0.5

➞ 2.5 mm

1 x 0.5

➞ 1.5 mm

2 x 0.5

➞ 1 Nm / 5.3 ➞8.8 lbf.in

-20 ➞ +50

-40

➞ +70

a
a

c

a

2

(AWG 20 ➞ AWG 11)

2

(AWG 20 ➞ AWG 14)

2

(AWG 20 ➞ AWG 14)

2

(AWG 20 ➞ AWG 16)

84 873 034

1

Dimensions (mm)

EWS / EWS2

68

44

23.2

22.5

45

67.5

Connections

EWS2

L1
L2
L3

L1 L2 L3

3

Principles

Timing diagrams EWS2

100%

L1

0%

100%

L2

0%

100%

L3

0%

Tr Tr Tr

On

R

Off

Td Td Td Td

Td Td Td Td

5.5

11

R

12 14

90

2.6

21

R

22 24

Td : Power on delay
Tr : Responsable time after a fault has occurred
R : Output relay

L3

L2

Tr

2