Datasheet - ZW7-540

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Current transformer-operated overload relay, 360-540A, 1N/O+1N/C
Part no.  ZW7-540
Catalog No.  047702
Eaton Catalog No.  XTOT540C3S
 

Delivery program
Product range
    ZW7 current transformer-operated overload relays
Description
    Test/off button
Reset pushbutton manual/auto
Trip-free release
Protection with heavy starting duty
Mounting type
    Separate mounting
Setting range
     
Overload releases
Ir A 360 - 540
Contact sequence
   
Auxiliary contacts
     
N/O = Normally open
    1 N/O
N/C = Normally closed
    1 N/C
Notes 

The main current parameters are defined by the main current wiring which is used.

Technical data
General
Standards
    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
  °C -25 - +50
Enclosed
  °C - 25 - 40
Temperature compensation
    Continuous
Mounting position
    As required
Weight
  kg 0.8
Mechanical shock resistance
  g 10
Sinusoidal
Shock duration 10 ms
Degree of Protection
    IP00
Protection against direct contact when actuated from front (EN 50274)
    Finger and back-of-hand proof
Main conducting paths
Rated impulse withstand voltage
Uimp V AC 8000
Overvoltage category/pollution degree
    III/3
Rated insulation voltage
Ui V 1000
Rated operational voltage
Ue V AC 1000
Safe isolation to EN 61140
     
Between auxiliary contacts and main contacts
  V AC 440
Between main circuits
  V AC 440
Short-circuit protection Maximum fuse
    With overload relay in conjunction with a transformer as required for the contactor
Current heat loss (3 conductors)
     
Lower value of the setting range
  W 3
Maximum setting
  W 10
Push-through opening
mm 27
Auxiliary and control circuits
Rated impulse withstand voltage
Uimp V 4000
Overvoltage category/pollution degree
    III/3
Terminal capacities
  mm2  
Solid
  mm2 1 x (0.75 - 4)
2 x (0.75 - 4)
Flexible with ferrule
  mm2 1 x (0.75 - 2.5)
2 x (0.75 - 2.5)
Solid or stranded
  AWG 2 x (18 - 14)
Terminal screw
    M3.5
Tightening torque
  Nm 0.8 - 1.2
Stripping length
  mm 8
Tools
     
Pozidriv screwdriver
  Size 2
Standard screwdriver
  mm 1 x 6
Rated insulation voltage
Ui V AC 500
Rated operational voltage
Ue V AC 500
Safe isolation to EN 61140
     
between the auxiliary contacts
  V AC 240
Conventional thermal current
Ith A 6
Rated operational current
Ie A  
AC-15
     
Make contact
     
120 V
Ie A 1.5
220 V 230 V 240 V
Ie A 1.5
380 V 400 V 415 V
Ie A 0.5
500 V
Ie A 0.5
Break contact
     
120 V
Ie A 1.5
220 V 230 V 240 V
Ie A 1.5
380 V 400 V 415 V
Ie A 0.9
500 V
Ie A 0.8
DC-13 L/R - 15 ms
     
 
    Making and breaking conditions to DC-13, time constant as stated.
24 V
Ie A 0.9
60 V
Ie A 0.75
110 V
Ie A 0.4
220 V
Ie A 0.2
Pilot Duty
     
AC operated
    B300 at opposite polarity
B600 at same polarity
DC operated
    R300
Short-circuit rating without welding
     
max. fuse
  A gG/gL 6
Design verification as per IEC/EN 61439(Show features)(Hide features)
Technical data ETIM 6.0(Show features)(Hide features)
Approvals
Product Standards     UL 508; CSA-C22.2 No. 14; IEC/EN 60947-4-1; CE marking
UL File No.     E29184
UL Category Control No.     NKCR
CSA File No.     12528
CSA Class No.     3211-03
North America Certification     UL listed, CSA certified
Specially designed for North America     No
Suitable for     Branch circuits
Max. Voltage Rating     600 V AC
Degree of Protection     IEC: IP00, UL/CSA Type: -
Characteristics
These tripping characteristics are mean values of the spread at 20 °C ambient air temperature in a cold state. Tripping time depends on response current. When the devices are at operational temperature the tripping time of the overload relay reduces to approx. 25 % of the read off value.
Dimensions
Reset/on
Permissible mounting positions