179 / 439
Overload relays
Overload relays, CT-operated overload relays
2010
CA08103002Z-EN
www.eaton.com6/31
Overload relays,CT-operatedoverload relays
Z5-…/FF225A(250)
ZW7
General
Standards
IEC/EN 60947, VDE 0660, UL, CSA
IEC/EN 60947, VDE 0660, UL, CSA
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature
Open
1)
°C
-25…50
-25…50
Enclosed
1)
°C
-25…40
-25…40
Temperature compensation
Continuous
Continuous
Mounting position
￫Page 6/28
Any
Weight
kg
1.55
0.8
Mechanical shock resistance half-sinusoidal shock, 10 ms
to IEC 60068-2-27
g
10
10
Protection type
IP00
IP00
Protection against direct contact when actuated
from front (EN 50274)
With terminal cover
Finger- and back-of-hand proof
Main contacts
Rated impulse withstand voltage
U
imp
V AC 8000
6000
Overvoltage category/pollution degree
III/3
III/3
Rated insulation voltage
AC
U
i
V AC 1000
690
Rated operating voltage
U
e
V AC 1000
690
Safe isolation according to EN 61140
Between auxiliary contacts and main contacts
V AC 440
440
Between the main contacts
V AC 440
440
Overload relay setting range
A
50…300
42…630
Temperature compensation residual error > 40 ºC
%/
K
≦ 0.25
–
Short-circuit protection rating maximum fuse
￫Page 6/12
With overload relay in conjunction
with a transformer as required for the
contactor
Current heat loss (3 conductors)
Lower value of setting range
W 16
3
Upper value of setting range
W 28
10
Terminal capacity
Flexible with ferrule
mm
2
95
–
Stranded with ferrule
mm
2
120
–
Solid or stranded
AWG 250 MCM
–
Flat conductor.
Number of segments x width x thickness mm 6 x 16 x 0.8
2)
–
Busbar
Width mm 20 x 3
–
Push-through opening
⌀ mm –
27
Terminal screw
M8 x 25
–
Tightening torque
Nm 24
–
Tools
Hexagonal socket
SW mm 13
–
Notes
1)
Ambient temperature: Operating range to IEC/EN 60947, PTB: -5°C to +50°C
2)
Fixing with box terminals
Z5, ZW7