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4
The
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Ove
rload
Rel
ays
The
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Ove
rload
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ZE, Z00 Overload Relays
Z1, Z4 Overload RelaysZW7 Current Transformer-Operated Overload RelaysZ5 Overload Relays
UL / CSA / IEC / CE Overload RelaysWith single phasing sensitivity
1 3
Setting range
Amps
4 5
Type Price
$
2 6
Short-circuit protectionby fuses by circuit breaker
Maximum Maximum600V AC 600V AC
Amps Amps
406090125200200
250
250400500
400500500700
700
250400500500700
UL Listed File No. E 29184CSA Certified File No. 45958 + 43359
1M1AM2M2M2AM
For separatemounting
As supplied:Z1-75+EZ1
3-22
4-22, 6-22
8(A)-22
––––––––
406090125150150
200
250400500
400500500700
700
250400500500700
For separate mounting
For assembly with DIL universal contactors(without K terminal block)
Saturating Core Current Transformer Operated Relaysfor motors having long accelerating times
As required by associated contactor.Overload relay is self-protecting.
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For Immediate Delivery call KMParts.com at (866) 595-9616
4
Therm
al Overload R
elaysT
hermistor O
verload Relays
Z5-35/SK3
Z5-50/SK3
Z5-70/SK3
Z5-100/SK3
Z5-50/SK4
Z5-70/SK4
Z5-100/SK4
Z5-125/SK4
Z5-150/SK4
Z5-35/KK3
Z5-50/KK3
Z5-70/KK3
Z5-100/KK3
Z5-50/KK4
Z5-70/KK4
Z5-100/KK4
Z5-125/KK4
Z5-150/KK4
Z5-70/FF250
Z5-100/FF250
Z5-125/FF250
Z5-160/FF250
Z5-220/FF250
Z5-250/FF250
For directmounting oncontactors
DIL
Overload Relays UL / CSA / IEC / CEWith single phasing sensitivity
4/4
1 3
Setting range
Amps
4 5
Type Price
$
2 6
Short-circuit protectionby fuses by circuit breaker
Maximum Maximum600V AC 600V AC
Amps Amps
125
225
250
400 Class J
225
250
400 Class J
500 Class J
600 Class J
125
225
250
400 Class J
225
250
400 Class J
500 Class J
600 Class J
250
400 Class J
500 Class J
600 Class J
800 Class J
800 Class J
25-35
35-50
50-70
70-100
35-50
50-70
70-100
95-125
120-142
25-35
35-50
50-70
70-100
35-50
50-70
70-100
95-125
120-150
50-70
70-100
95-125
120-160
160-220
200-250
UL Listed File No. E 29184CSA Certified File No. 12528
DIL 3M 80
DIL 4M 115
—
—
DIL M 185DIL M 225DIL M 250
125
200
250
400
200
250
400
500
600
125
200
250
400
200
250
400
500
600
250
400
500
600
800
800
Z 5 Overload Relays, Direct mounting
Z 5 Overload Relays, Separate mounting
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For Immediate Delivery call KMParts.com at (866) 595-9616
4
The
rmal
Ove
rload
Rel
ays
The
rmis
tor
Ove
rload
Rel
ays
Window opening forload wire
40 mm (1.57 in.)
65 mm (2.55 in.)
120 mm (4.72 in.)
Type
4/5
2 3 4
UL / CSA / IEC / CE Electronic Overload Relays
Tripping device with built-in current transformers
SettingrangeOverloadrelease
Amps
Current Transformers for Ground Fault protection
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Price
$
1
1.25-6.3
6.3-25
25-100
50-205
125-500
200-820
Fault currentAmps
0.3 A
0.5 A
1 A
0.5 A
1 A
0.5 A
1 A
ZWA-6.3(110–120V 50/60Hz)
ZWA-6.3(220–240V 50/60Hz)
ZWA-6.3(24V DC)
ZWA-25(110–120V 50/60Hz)
ZWA-25(220–240V 50/60Hz)
ZWA-25(24V DC)
ZWA-100(110–120V 50/60Hz)
ZWA-100(220–240V 50/60Hz)
ZWA-100(24V DC)
ZWA-205(110–120V 50/60Hz)
ZWA-205(220–240V 50/60Hz)
ZWA-205(24V DC)
ZWA-500(110–120V 50/60Hz)
ZWA-500(220–240V 50/60Hz)
ZWA-500(24V DC)
ZWA-820(110–120V 50/60Hz)
ZWA-820(220–240V 50/60Hz)
ZWA-820(24V DC)
SSW40-0.3
SSW40-0.5
SSW40-1
SSW65-0.5
SSW65-1
SSW120-0.5
SSW120-1
For Immediate Delivery call KMParts.com at (866) 595-9616
4
Therm
al Overload R
elaysT
hermistor O
verload Relays
Tripping times for ZWA overload relays
Tripping class CLASSTripping time for For 3-pole symmetricalselection as required loading starting from cold(± 10%)Set X 3current Ie X 4
X 5X 6X 7.2X 8
Incoming
A 1/A 2 Rated control voltageT 1/T 2 Thermistor sensor (supplied in
short-circuit condition with bridge)C 1/C 2 Ground fault: SSW connectionY 1/Y 2 Hand or Auto Reset
Outgoing
95/96 NC contact Overload/Thermistor97/98 NO contact Overload/Thermistor05/06 NC contact Ground Fault07/08 NO contact Ground Fault
For normal starting and overload conditions, contactors are selected for "CLASS 10". In order that the contactors are not thermallyoverloaded during longer tripping times, the maximum rated operational current Ie must be reduced according to the CLASS setting.
I CLASS 5 = I CLASS 10 = Ie I CLASS 15 = Ie X 0.82 I CLASS 20 = Ie X 0.71 I CLASS 25 = Ie X 0.63 I CLASS 30 = Ie X 0.58
5 4 3 2
0.25-0.3 0.31-0.41 0.42-0.62 0.63-1.24
4/6
Electronic Overload Relays
5
12.57.56.95.24.34
10
25171310.298
15
3727.519161311
20
483527.520.217.516
25
56413427.52019
30
755041352624
Ie
L2
L1
L3
N
Z1
Z2
T2/C1 C2 A2 A1 95 97 05 07
T1 T2/C1 Y2 Y1 96 98 06 08
M3
CLASS
Ready
Ground fault
Automatic-Reset
Remote-Reset
Overload
Test/Reset
Tripping devices ZWA-6.3 through ZWA-100 have an integral ring type current transformer. For motor currents less than 1.25 amps,the cables are looped through the ring openings. The number of loops is according to the Table shown below.
Number of loops (n)
Motor rated current In (A)
The setting current Ie of the device is calculated Ie = n X In
Tripping devices with integral current transformer
Selection of contactor according to starting duty (CLASS)
Tripping limits with 3-pole symmetrical overload
Response current: > 110% of setting current< 120% of setting current
Response time: < 20 min starting from cold
Tripping time when test 5 secbutton is actuated
Reset time 5 min (no delay after test)on tripping
For Immediate Delivery call KMParts.com at (866) 595-9616
4
The
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Ove
rload
Rel
ays
The
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tor
Ove
rload
Rel
ays
Bases
External reset button for enclosed overload relays IP 65
EZ00
EZ1
MDE-287
MDE-287-S
MDA-110
MDA-110-S
K-Z4
H1-Z4
H2-Z4
HV DIL 6M
PDT-A2-CP04A
PDT-A2-CP05A
PDT-A2-CP06A
PDT-A2-CP07A
Z00
Z1
ZEZ00Z1Z4ZW7Z5
ZEZ00Z1Z5ZW7
Z4
Z4
Z4
Z5
ZWA-205
ZWA-500
ZWA-820
ZWA-820
For UseWith:
Overload RelaysAccessories
4/7
1 3 4
TypePrice
$
2 5 6
Snap-on fastening on 35 mmmounting rail or panel mounted.
Mounting diameter22.5 mmBlue button plate: RESET
Red button plate: STOP
Consisting of one cover with brackets forseparate mounting. Consisting of twocovers with brackets for separate mounting
For line and load bolt-on terminations. (2pieces) Provides terminations withprotection against accidental contact.
PDT-A2 covers are for use between acontactor and overload relay for directmounting.
For separate mounting
Front ring: matt chromed
black
For Immediate Delivery call KMParts.com at (866) 595-9616
4
Therm
al Overload R
elaysT
hermistor O
verload Relays
– With automatic reset
– Power ON and Fault indicating LED display
– Selector switch with manual/automatic reset– For manual or remote resetting– Test button– Power ON and Fault indicating LED display
Multi-function device
– Selector switch with manual/automatic reset.– Short-circuit recognition in the sensor circuit.– Reliable fault signalling even under supply voltage failure. (Zero voltage safety)– Manual or remote resetting– Test button– Short-circuit recognition and zero-voltage safety can be switched off– Power ON and Fault indicating LED display
Price
$
Accessories
Panel mount adapter
3
3
3
4/8
UL/CSAPilot Duty Rating
1 3 4
Type
2 5 6
IEC Rated operationalcurrent Ie atAC-15220 V230 V240 VA
Thermistor overload relaysfor use with P.T.C. (Positive Temperature Coefficient) Thermistors
B300
B300
B300
24...240 V 50/60 Hz24...240 V DC
Same device suitablefor all above voltageand frequencies!
24...240 V 50/60 Hz24...240 V DC
Same device suitablefor all above voltageand frequencies!
24-240 V 50/60 Hz24-240 V DC
Same device suitablefor all above voltageand frequencies!
EMT6
EMT6-DB
EMT6-DBK
CS-TE
Thermistor Overload Relays UL / CSA / IEC / CEfor protection of motors with P.T.C. Thermistors embedded in their windings
Ratedoperationalvoltage rangeUs
V
Without the adapter the EMT 6 is suitable for35mm DIN rail mounting only. The adapter enablesthe EMT 6 to become a panel mounted device usingconventional screws.
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For Immediate Delivery call KMParts.com at (866) 595-9616
4
The
rmal
Ove
rload
Rel
ays
The
rmis
tor
Ove
rload
Rel
ays
Snap fitting on 35mm DIN railto EN 50 022-35x15
At RK ≤ 250 Ω per sensor: 6 sensors,at RK ≤ 100 Ω per sensor: 9 sensors inthe winding (to be supplied by user).Max. length of thermistor cable(unscreened) 250m. Total thermistorresistance ∑ RK ≤ 1500 Ω
Characteristic values of sensor circuit at Us and +20 °C
Functions which can be disconnected onEMT 6-DBK:
Function Disconnectionvia jumper
Short-circuitrecognition Y1–Y3
Zero-voltagesafety Y1–Y4
Application notes
4/9
Flow diagramsLED display
7 98
Terminal markingsto EN 50 005
Thermistor Overload Relays(Thermal Motor Protection)
Supply voltageis applied
Device has tripped
Device has tripped/short circuit in sensor circuit
EMT 6, EMT 6-DB, EMT 6-DBK
Auto
EMT 6-DB, EMT 6-DBK
Manual
EMT 6-DBK
Zero-voltage safe operation
RT1-T2
T1, T2short-circuited4 kΩT1-T2open
EMT 6...
UT1-T2
V DCmax.–
35.1
IT1-T2
mAmax.1.9
0.8–
For Immediate Delivery call KMParts.com at (866) 595-9616
4
Therm
al Overload R
elaysT
hermistor O
verload Relays
Standard features for ZE, Z00, Z1, Z4, Z5 and ZW7 overload relays
3 pole adjustable overload relay. Current transformer-operated overload relay for heavy starting duty (ZW7).
Auxiliary contacts: NO + NC.
For mounting directly on to contactor, or for separate mounting. (Type ZE, direct mounting on contactor only).
Temperature compensated.
Clearly marked setting scale: Facilitates accurate setting, even for intermediate values, to motor FLC.
Setting lever for hand or auto reset: Supplied set to "Hand" (with manual reset).Hand: After tripping, reset button must be operated. Normally associated with two-wire controls for safety reasons and toprevent "pumping".Auto: Automatic reset after tripping. Normally associated with three-wire controls.
Reset button (internal reset): To reset after tripping when reset lever is set to "Hand".If fault still exists, trips free even if reset button is held down.On enclosed devices use supplementary MDE external reset button.Test/OFF button: To simulate tripping of overload relay.To de-energize self-maintaining contactors (OFF function for all types except Z4).
Current transformer-operated overload relays: The specified primary rated current applies to one cable loop.For lower rated motor current, loop cable several times, e.g. ZW7-63 for 21...31.5 A rated motor current: Loop cable twice.
4/10
Overload Relays
Tripping Characteristics:
The tripping curves are average values of the tolerance curves at 20˚ C, starting from cold. Tripping time is given in relation to the trippingcurrent. Specific characteristics for each individual setting range available on request.
Special Note: All types have adjustable dial for setting motor full load current. Trip current is 125% of set value. For motors with a service factor (SF) of 1.0, set dial to 90% of motor full load current.
2h
10060
40
20
10
6
4
2
1
40
20
10
6
4
2
1
0.6
Z 5
6 8 101520 3 41 1.5 2
x Rated current
3 phase
Seconds
Min
ute
s
2 phase
x Rated current
2 phaseSeconds
Min
ute
s
3 phase
2h
10060
40
20
10
6
4
2
1
40
20
10
6
4
2
1
0.6
ZE
Z 00
Z 1
1 1.5 2 3 4 6 8 1015 20 1 1.5 2 3 4 6 8 1015 20
2h
10060
40
20
10
6
4
2
1
40
20
10
6
4
2
1
0.6
ZW7
x Rated current
Minimum
Seconds
Min
ute
s
Maximum
2h100
50
20
10
5
2
1
20
10
5
2
1
0.7 1 2 5 8
ZWA 3 pole
CLASS 30
25
20
15
10
CLASS 5
Seconds
Min
ute
s
x Rated current
100
50
20
10
5
2
1
20
10
5
2
1
ZWA 2 pole
2h
25
20
15
10
0.7 1 2 5 8
Seconds
Min
ute
s
CLASS 30
CLASS 5
x Rated current
For Immediate Delivery call KMParts.com at (866) 595-9616
4
The
rmal
Ove
rload
Rel
ays
The
rmis
tor
Ove
rload
Rel
ays
UL, CSA, IEC/EN 60 947, CE, DIN VDE 0660................................................
Damp heat, constant, to IEC/EN 60 068-2-3.....................................................Damp heat, cyclic, to IEC/EN 60 068-2-30........................................................
B600/B300 same polarity/opposite polarity.................................................R300...........................................................................................................