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Thermal Overload Relays - WEG RW Series 2 Pole
The RW Class 10 Thermal Overload Relays with their extended operational service lives are designed for use with the CWC miniature and CWM standard contactors These relays can be mounted directly under WEG contactors assuring electrical and mechanical operation as an open across-the-line starter from fractional power to 75 HP at 460V Available in compact frame sizes
Featuresbull Adjustable tripping currentbull Phase-loss sensitivitybull Tripping class 10bull Auxiliary contacts 1NO + 1NCbull Temperature compensation from -4degF to +140degFbull HandAutoReset button
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 2 Pole
Matching ContactorSetting Range [A] Max Fuse [A] Catalog Number
Min Max
CWC07hellipCWC016CWCA0(Mini-contactor)
028 040 15 RW17-1D2-D004
040 063 15 RW17-1D2-C063
056 080 15 RW17-1D2-D008
080 120 15 RW17-1D2-D012
120 180 15 RW17-1D2-D018
180 280 15 RW17-1D2-D028
280 400 15 RW17-1D2-U004
400 630 25 RW17-1D2-D063
560 800 30 RW17-1D2-U008
700 100 40 RW17-1D2-U010
800 125 50 RW17-1D2-D125
100 150 60 RW17-1D2-U015
110 170 60 RW17-1D2-U017
CWC025 (Mini-contactor)150 230 90 RW17-2D2-U023
220 320 100 RW17-2D2-U032
CWM9CWM40
028 040 15 RW27-1D2-D004
040 063 15 RW27-1D2-C063
056 080 15 RW27-1D2-D008
080 120 15 RW27-1D2-D012
120 180 15 RW27-1D2-D018
180 280 15 RW27-1D2-D028
280 400 15 RW27-1D2-U004
400 630 25 RW27-1D2-D063
560 800 30 RW27-1D2-U008
700 100 40 RW27-1D2-U010
800 125 50 RW27-1D2-D125
100 150 60 RW27-1D2-U015
110 170 60 RW27-1D2-U017
150 230 90 RW27-1D2-U023
220 320 90 RW27-1D2-U032
CWM32CWM40250 400 90 RW67-1D2-U040
320 500 125 RW67-1D2-U050
CWM50CWM80
250 400 90 RW67-2D2-U040
320 500 125 RW67-2D2-U050
400 570 150 RW67-2D2-U057
500 630 150 RW67-2D2-U063
570 700 175 RW67-2D2-U070
630 800 175 RW67-2D2-U080
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 2 Pole
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Standards Devices according to International Standards IEC 60947-1 60947-4-1 European Standards EN 60947-1 60947-4-1 Underwriters Laboratories - UL 508 CSA C22214 VDE 0660102
Number of Poles 2
Tripping Class 10
Phase Failure Sensitivity Yes
Temperature Compensation Yes
Rated Insulation Voltage Ui
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Operation Voltage Ue
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Impulse Voltage Uimp [kV] 6
Current
Direct YES NO
Alternating [Hz] up to 400 5060
Degree of Protection Protection against direct contact acc VDE 0160 - Part 100 - IP20
Ambient Temperature
Storage -50 to +80ordmC (-58 to 176ordmF)
Operating -20 to +70ordmC (-4 to 158ordmF)
Ambient temperature compensation -20 to +60ordmC (-4 to 140ordmF)
Pollution Degree 3
Mounting Direct on contactor or separately with accessory Separate
Current Heat Loss
Lower value of setting range (W) 09 09 15 23 1 1
Higher value of setting range (W) 14 17 47 47 19 19
Weight [kg] 015 015 031 052 230 312
[lb] 033 032 068 115 506 688
Shock Resistance
IEC 60 068 part 2-27 [gms] 810
Main Terminals Capacity Cross Slotted Combination1 Allen Head Slide Bar Slide Bar
Fine - Stranded with Sleeve [mm2] 15 - 10 15 - 10 60 - 35 60 - 35 - - Coarse - Stranded Solid [mm2] 15 - 60 15 - 60 60 - 35 25 - 35 - - Slide Bars [mm2] - - - - 2x(25x5) 2x(60x10) Stranded Solid (UL CSA) [AWG] 14 - 6 14 - 6 18 - 2 8 ndash 10 8 ndash 10 8 ndash 10Tightening Torque [Nm] 14 - 23 14 - 23 40 - 60 40 - 60 14 - 26 23 - 26
[lb-in] 124 - 204 124 - 204 354 - 531 354 - 531 1239 - 2301 2036 - 2301
Short Circuit Rating 600V [kA] 5 5 5 (40-57A)10(50-63A) 10 10 200
General Ratings
810
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 4 Pole
Auxiliary Contacts General Ratings
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Front Auxiliary Contact 1 NO + 1 NC
Rated Auxiliary Contacts
AC-1415 24V [A] 40
60V [A] 35
125V [A] 30
230V [A] 20
400V [A] 15
500V [A] 05
690V [A] 03
DC-1314 24V [A] 10
60V [A] 05
110V [A] 025
220V [A] 01
ULCSA C600 R300
Rated Thermal Current [A] 6
Short Circuit Protection
Fuses Type D or NH gLgG [A] 6
Auxiliar Terminals Capacity
Fine - Stranded with Sleeve [mm2] 10 - 25
Coarse - Stranded Solid [mm2] 10 - 25
Stranded Solid (UL CSA) [AWG] 16 - 12
Tightening Torque [Nm] 10 - 15
[lb-in] 89 - 133
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
The derating of the permissible operating current for installation altitudes above 2000m (6667 ft) and ambient temperatures over 60ordmC (140ordmF) is calculated according to
Total derating = Derating altitude x Derating ambient temperature
Example Altitude 3000 m (10000 ft) K1 = 096Ambient temperature 70ordmC (158ordmF) K2 = 087
Total current derating = 096 x 087 = 084 x IeIn this case the maximum rated voltage we can connect to our RW overload relay is 550V
In order to select the proper overload relay you have to choose a device with a cur-rent range that accommodates Overload Setting Point = FLAmotor (K1 x K2)
As in the example above K1 x K2 = 084For a motor with FLA = 20Amps
Overload Setting Point = 20 084 = 238Amps
RW Tripping Characteristics
The derating of a RW overload relay has two possible factors1) Ambient temperature bull Temperature compensation considers a factor according to which the rated
current must be reduced when ambient temperature is higher than 60ordmC (140ordmF)2) Altitude bull Altitude compensation involves both rated current and voltage bull Current compensation considers a factor according to the rated current
must be reduced bull For voltage altitude limits the higher operating voltage the overload relay
can be used
Meters
Derating Factor
These tripping characteristics show the tripping of RW in relation to the current They show the mean values of the tolerance ranges at on ambient temperature of 68ordmF (20ordmC) starting from cold stats The tripping time of the overloa d releases at operational temperature is reduced to approximately 25 of the values shown Under normal operational conditions all three phases of the RWs should be loaded
x Setting current
Altitude amp Temperature Derating
149ordmF158ordmF167ordmF176ordmF
(65ordmC)(70ordmC)(75ordmC)(80ordmC)
Temperature Compensation
Altitude
Current Correction
Voltage Correction [Ue]
Data subject to change wwwtemcoindustrialpowercom
Inside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
wwwtemcoindustrialpowercomINDUSTIAL POWER SUPPLYInside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
Thermal Overload Relays - WEG RW Series 4 Pole
Fax (510) 490-1507 International (510) 490-2187
Fax (510) 490-1507 International (510) 490-2187
Thermal Overload Relays - WEG RW Series 2 Pole
Matching ContactorSetting Range [A] Max Fuse [A] Catalog Number
Min Max
CWC07hellipCWC016CWCA0(Mini-contactor)
028 040 15 RW17-1D2-D004
040 063 15 RW17-1D2-C063
056 080 15 RW17-1D2-D008
080 120 15 RW17-1D2-D012
120 180 15 RW17-1D2-D018
180 280 15 RW17-1D2-D028
280 400 15 RW17-1D2-U004
400 630 25 RW17-1D2-D063
560 800 30 RW17-1D2-U008
700 100 40 RW17-1D2-U010
800 125 50 RW17-1D2-D125
100 150 60 RW17-1D2-U015
110 170 60 RW17-1D2-U017
CWC025 (Mini-contactor)150 230 90 RW17-2D2-U023
220 320 100 RW17-2D2-U032
CWM9CWM40
028 040 15 RW27-1D2-D004
040 063 15 RW27-1D2-C063
056 080 15 RW27-1D2-D008
080 120 15 RW27-1D2-D012
120 180 15 RW27-1D2-D018
180 280 15 RW27-1D2-D028
280 400 15 RW27-1D2-U004
400 630 25 RW27-1D2-D063
560 800 30 RW27-1D2-U008
700 100 40 RW27-1D2-U010
800 125 50 RW27-1D2-D125
100 150 60 RW27-1D2-U015
110 170 60 RW27-1D2-U017
150 230 90 RW27-1D2-U023
220 320 90 RW27-1D2-U032
CWM32CWM40250 400 90 RW67-1D2-U040
320 500 125 RW67-1D2-U050
CWM50CWM80
250 400 90 RW67-2D2-U040
320 500 125 RW67-2D2-U050
400 570 150 RW67-2D2-U057
500 630 150 RW67-2D2-U063
570 700 175 RW67-2D2-U070
630 800 175 RW67-2D2-U080
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 2 Pole
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Standards Devices according to International Standards IEC 60947-1 60947-4-1 European Standards EN 60947-1 60947-4-1 Underwriters Laboratories - UL 508 CSA C22214 VDE 0660102
Number of Poles 2
Tripping Class 10
Phase Failure Sensitivity Yes
Temperature Compensation Yes
Rated Insulation Voltage Ui
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Operation Voltage Ue
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Impulse Voltage Uimp [kV] 6
Current
Direct YES NO
Alternating [Hz] up to 400 5060
Degree of Protection Protection against direct contact acc VDE 0160 - Part 100 - IP20
Ambient Temperature
Storage -50 to +80ordmC (-58 to 176ordmF)
Operating -20 to +70ordmC (-4 to 158ordmF)
Ambient temperature compensation -20 to +60ordmC (-4 to 140ordmF)
Pollution Degree 3
Mounting Direct on contactor or separately with accessory Separate
Current Heat Loss
Lower value of setting range (W) 09 09 15 23 1 1
Higher value of setting range (W) 14 17 47 47 19 19
Weight [kg] 015 015 031 052 230 312
[lb] 033 032 068 115 506 688
Shock Resistance
IEC 60 068 part 2-27 [gms] 810
Main Terminals Capacity Cross Slotted Combination1 Allen Head Slide Bar Slide Bar
Fine - Stranded with Sleeve [mm2] 15 - 10 15 - 10 60 - 35 60 - 35 - - Coarse - Stranded Solid [mm2] 15 - 60 15 - 60 60 - 35 25 - 35 - - Slide Bars [mm2] - - - - 2x(25x5) 2x(60x10) Stranded Solid (UL CSA) [AWG] 14 - 6 14 - 6 18 - 2 8 ndash 10 8 ndash 10 8 ndash 10Tightening Torque [Nm] 14 - 23 14 - 23 40 - 60 40 - 60 14 - 26 23 - 26
[lb-in] 124 - 204 124 - 204 354 - 531 354 - 531 1239 - 2301 2036 - 2301
Short Circuit Rating 600V [kA] 5 5 5 (40-57A)10(50-63A) 10 10 200
General Ratings
810
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 4 Pole
Auxiliary Contacts General Ratings
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Front Auxiliary Contact 1 NO + 1 NC
Rated Auxiliary Contacts
AC-1415 24V [A] 40
60V [A] 35
125V [A] 30
230V [A] 20
400V [A] 15
500V [A] 05
690V [A] 03
DC-1314 24V [A] 10
60V [A] 05
110V [A] 025
220V [A] 01
ULCSA C600 R300
Rated Thermal Current [A] 6
Short Circuit Protection
Fuses Type D or NH gLgG [A] 6
Auxiliar Terminals Capacity
Fine - Stranded with Sleeve [mm2] 10 - 25
Coarse - Stranded Solid [mm2] 10 - 25
Stranded Solid (UL CSA) [AWG] 16 - 12
Tightening Torque [Nm] 10 - 15
[lb-in] 89 - 133
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
The derating of the permissible operating current for installation altitudes above 2000m (6667 ft) and ambient temperatures over 60ordmC (140ordmF) is calculated according to
Total derating = Derating altitude x Derating ambient temperature
Example Altitude 3000 m (10000 ft) K1 = 096Ambient temperature 70ordmC (158ordmF) K2 = 087
Total current derating = 096 x 087 = 084 x IeIn this case the maximum rated voltage we can connect to our RW overload relay is 550V
In order to select the proper overload relay you have to choose a device with a cur-rent range that accommodates Overload Setting Point = FLAmotor (K1 x K2)
As in the example above K1 x K2 = 084For a motor with FLA = 20Amps
Overload Setting Point = 20 084 = 238Amps
RW Tripping Characteristics
The derating of a RW overload relay has two possible factors1) Ambient temperature bull Temperature compensation considers a factor according to which the rated
current must be reduced when ambient temperature is higher than 60ordmC (140ordmF)2) Altitude bull Altitude compensation involves both rated current and voltage bull Current compensation considers a factor according to the rated current
must be reduced bull For voltage altitude limits the higher operating voltage the overload relay
can be used
Meters
Derating Factor
These tripping characteristics show the tripping of RW in relation to the current They show the mean values of the tolerance ranges at on ambient temperature of 68ordmF (20ordmC) starting from cold stats The tripping time of the overloa d releases at operational temperature is reduced to approximately 25 of the values shown Under normal operational conditions all three phases of the RWs should be loaded
x Setting current
Altitude amp Temperature Derating
149ordmF158ordmF167ordmF176ordmF
(65ordmC)(70ordmC)(75ordmC)(80ordmC)
Temperature Compensation
Altitude
Current Correction
Voltage Correction [Ue]
Data subject to change wwwtemcoindustrialpowercom
Inside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
wwwtemcoindustrialpowercomINDUSTIAL POWER SUPPLYInside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
Thermal Overload Relays - WEG RW Series 4 Pole
Fax (510) 490-1507 International (510) 490-2187
Fax (510) 490-1507 International (510) 490-2187
Thermal Overload Relays - WEG RW Series 2 Pole
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Standards Devices according to International Standards IEC 60947-1 60947-4-1 European Standards EN 60947-1 60947-4-1 Underwriters Laboratories - UL 508 CSA C22214 VDE 0660102
Number of Poles 2
Tripping Class 10
Phase Failure Sensitivity Yes
Temperature Compensation Yes
Rated Insulation Voltage Ui
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Operation Voltage Ue
Acc IEC 60947-4-1 [V] 690 1000
Acc UL CSA [V] 600
Rated Impulse Voltage Uimp [kV] 6
Current
Direct YES NO
Alternating [Hz] up to 400 5060
Degree of Protection Protection against direct contact acc VDE 0160 - Part 100 - IP20
Ambient Temperature
Storage -50 to +80ordmC (-58 to 176ordmF)
Operating -20 to +70ordmC (-4 to 158ordmF)
Ambient temperature compensation -20 to +60ordmC (-4 to 140ordmF)
Pollution Degree 3
Mounting Direct on contactor or separately with accessory Separate
Current Heat Loss
Lower value of setting range (W) 09 09 15 23 1 1
Higher value of setting range (W) 14 17 47 47 19 19
Weight [kg] 015 015 031 052 230 312
[lb] 033 032 068 115 506 688
Shock Resistance
IEC 60 068 part 2-27 [gms] 810
Main Terminals Capacity Cross Slotted Combination1 Allen Head Slide Bar Slide Bar
Fine - Stranded with Sleeve [mm2] 15 - 10 15 - 10 60 - 35 60 - 35 - - Coarse - Stranded Solid [mm2] 15 - 60 15 - 60 60 - 35 25 - 35 - - Slide Bars [mm2] - - - - 2x(25x5) 2x(60x10) Stranded Solid (UL CSA) [AWG] 14 - 6 14 - 6 18 - 2 8 ndash 10 8 ndash 10 8 ndash 10Tightening Torque [Nm] 14 - 23 14 - 23 40 - 60 40 - 60 14 - 26 23 - 26
[lb-in] 124 - 204 124 - 204 354 - 531 354 - 531 1239 - 2301 2036 - 2301
Short Circuit Rating 600V [kA] 5 5 5 (40-57A)10(50-63A) 10 10 200
General Ratings
810
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
Thermal Overload Relays - WEG RW Series 4 Pole
Auxiliary Contacts General Ratings
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Front Auxiliary Contact 1 NO + 1 NC
Rated Auxiliary Contacts
AC-1415 24V [A] 40
60V [A] 35
125V [A] 30
230V [A] 20
400V [A] 15
500V [A] 05
690V [A] 03
DC-1314 24V [A] 10
60V [A] 05
110V [A] 025
220V [A] 01
ULCSA C600 R300
Rated Thermal Current [A] 6
Short Circuit Protection
Fuses Type D or NH gLgG [A] 6
Auxiliar Terminals Capacity
Fine - Stranded with Sleeve [mm2] 10 - 25
Coarse - Stranded Solid [mm2] 10 - 25
Stranded Solid (UL CSA) [AWG] 16 - 12
Tightening Torque [Nm] 10 - 15
[lb-in] 89 - 133
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
The derating of the permissible operating current for installation altitudes above 2000m (6667 ft) and ambient temperatures over 60ordmC (140ordmF) is calculated according to
Total derating = Derating altitude x Derating ambient temperature
Example Altitude 3000 m (10000 ft) K1 = 096Ambient temperature 70ordmC (158ordmF) K2 = 087
Total current derating = 096 x 087 = 084 x IeIn this case the maximum rated voltage we can connect to our RW overload relay is 550V
In order to select the proper overload relay you have to choose a device with a cur-rent range that accommodates Overload Setting Point = FLAmotor (K1 x K2)
As in the example above K1 x K2 = 084For a motor with FLA = 20Amps
Overload Setting Point = 20 084 = 238Amps
RW Tripping Characteristics
The derating of a RW overload relay has two possible factors1) Ambient temperature bull Temperature compensation considers a factor according to which the rated
current must be reduced when ambient temperature is higher than 60ordmC (140ordmF)2) Altitude bull Altitude compensation involves both rated current and voltage bull Current compensation considers a factor according to the rated current
must be reduced bull For voltage altitude limits the higher operating voltage the overload relay
can be used
Meters
Derating Factor
These tripping characteristics show the tripping of RW in relation to the current They show the mean values of the tolerance ranges at on ambient temperature of 68ordmF (20ordmC) starting from cold stats The tripping time of the overloa d releases at operational temperature is reduced to approximately 25 of the values shown Under normal operational conditions all three phases of the RWs should be loaded
x Setting current
Altitude amp Temperature Derating
149ordmF158ordmF167ordmF176ordmF
(65ordmC)(70ordmC)(75ordmC)(80ordmC)
Temperature Compensation
Altitude
Current Correction
Voltage Correction [Ue]
Data subject to change wwwtemcoindustrialpowercom
Inside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
wwwtemcoindustrialpowercomINDUSTIAL POWER SUPPLYInside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
Thermal Overload Relays - WEG RW Series 4 Pole
Fax (510) 490-1507 International (510) 490-2187
Fax (510) 490-1507 International (510) 490-2187
Thermal Overload Relays - WEG RW Series 4 Pole
Auxiliary Contacts General Ratings
TYPE RW17D RW27D RW67D RW117D RW317D RW407D
Front Auxiliary Contact 1 NO + 1 NC
Rated Auxiliary Contacts
AC-1415 24V [A] 40
60V [A] 35
125V [A] 30
230V [A] 20
400V [A] 15
500V [A] 05
690V [A] 03
DC-1314 24V [A] 10
60V [A] 05
110V [A] 025
220V [A] 01
ULCSA C600 R300
Rated Thermal Current [A] 6
Short Circuit Protection
Fuses Type D or NH gLgG [A] 6
Auxiliar Terminals Capacity
Fine - Stranded with Sleeve [mm2] 10 - 25
Coarse - Stranded Solid [mm2] 10 - 25
Stranded Solid (UL CSA) [AWG] 16 - 12
Tightening Torque [Nm] 10 - 15
[lb-in] 89 - 133
48621 Warm Springs Blvd Fremont CA 94539 USAPhone FaxwwwtemcoindustrialcomSpecications may vary and are subject to change For certied drawings and specications please contact a TEMCo representative
(510) 490-2187 (510) 490-1507
THERMAL OVERLOAD RELAYS
The derating of the permissible operating current for installation altitudes above 2000m (6667 ft) and ambient temperatures over 60ordmC (140ordmF) is calculated according to
Total derating = Derating altitude x Derating ambient temperature
Example Altitude 3000 m (10000 ft) K1 = 096Ambient temperature 70ordmC (158ordmF) K2 = 087
Total current derating = 096 x 087 = 084 x IeIn this case the maximum rated voltage we can connect to our RW overload relay is 550V
In order to select the proper overload relay you have to choose a device with a cur-rent range that accommodates Overload Setting Point = FLAmotor (K1 x K2)
As in the example above K1 x K2 = 084For a motor with FLA = 20Amps
Overload Setting Point = 20 084 = 238Amps
RW Tripping Characteristics
The derating of a RW overload relay has two possible factors1) Ambient temperature bull Temperature compensation considers a factor according to which the rated
current must be reduced when ambient temperature is higher than 60ordmC (140ordmF)2) Altitude bull Altitude compensation involves both rated current and voltage bull Current compensation considers a factor according to the rated current
must be reduced bull For voltage altitude limits the higher operating voltage the overload relay
can be used
Meters
Derating Factor
These tripping characteristics show the tripping of RW in relation to the current They show the mean values of the tolerance ranges at on ambient temperature of 68ordmF (20ordmC) starting from cold stats The tripping time of the overloa d releases at operational temperature is reduced to approximately 25 of the values shown Under normal operational conditions all three phases of the RWs should be loaded
x Setting current
Altitude amp Temperature Derating
149ordmF158ordmF167ordmF176ordmF
(65ordmC)(70ordmC)(75ordmC)(80ordmC)
Temperature Compensation
Altitude
Current Correction
Voltage Correction [Ue]
Data subject to change wwwtemcoindustrialpowercom
Inside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
wwwtemcoindustrialpowercomINDUSTIAL POWER SUPPLYInside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
Thermal Overload Relays - WEG RW Series 4 Pole
Fax (510) 490-1507 International (510) 490-2187
Fax (510) 490-1507 International (510) 490-2187
The derating of the permissible operating current for installation altitudes above 2000m (6667 ft) and ambient temperatures over 60ordmC (140ordmF) is calculated according to
Total derating = Derating altitude x Derating ambient temperature
Example Altitude 3000 m (10000 ft) K1 = 096Ambient temperature 70ordmC (158ordmF) K2 = 087
Total current derating = 096 x 087 = 084 x IeIn this case the maximum rated voltage we can connect to our RW overload relay is 550V
In order to select the proper overload relay you have to choose a device with a cur-rent range that accommodates Overload Setting Point = FLAmotor (K1 x K2)
As in the example above K1 x K2 = 084For a motor with FLA = 20Amps
Overload Setting Point = 20 084 = 238Amps
RW Tripping Characteristics
The derating of a RW overload relay has two possible factors1) Ambient temperature bull Temperature compensation considers a factor according to which the rated
current must be reduced when ambient temperature is higher than 60ordmC (140ordmF)2) Altitude bull Altitude compensation involves both rated current and voltage bull Current compensation considers a factor according to the rated current
must be reduced bull For voltage altitude limits the higher operating voltage the overload relay
can be used
Meters
Derating Factor
These tripping characteristics show the tripping of RW in relation to the current They show the mean values of the tolerance ranges at on ambient temperature of 68ordmF (20ordmC) starting from cold stats The tripping time of the overloa d releases at operational temperature is reduced to approximately 25 of the values shown Under normal operational conditions all three phases of the RWs should be loaded
x Setting current
Altitude amp Temperature Derating
149ordmF158ordmF167ordmF176ordmF
(65ordmC)(70ordmC)(75ordmC)(80ordmC)
Temperature Compensation
Altitude
Current Correction
Voltage Correction [Ue]
Data subject to change wwwtemcoindustrialpowercom
Inside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
wwwtemcoindustrialpowercomINDUSTIAL POWER SUPPLYInside USA (877) 474-820941484 Christy Street Fremont CA 94538 USAAddress
Thermal Overload Relays - WEG RW Series 4 Pole
Fax (510) 490-1507 International (510) 490-2187
Fax (510) 490-1507 International (510) 490-2187