CARLO GAVAZZI RSWT Series User manual

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Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Three phase AC pumps and ventilators soft starter
Description
RSWT is an extremely compact and easy to use
3-phase soft starter for AC pumps and ventilators
rated up to 90 Arms.
The starting parameters can be easily set-up
through 3 knobs.
The integrated motor overload protection (Class
10) results in a higher installation exibility.
Benets
• Easy to use. The RSWT is equipped with a self-learning
algorithm that automatically adjusts the start parameters
to optimise the motor starts and stops.
• Fast installation and set-up. Only 3 settings are
required (FLC, ramp-up and ramp-down).
• Compact dimensions. 12 - 25 Arms in 45 mm wide
housing, 32 - 55 Arms in 75 mm wide housing, 70 - 90
Arms in 120 mm wide housing.
• Integrated protection. Diagnostic functions provide
additional protection. RSWT is also equipped with an
overload protection (Class 10).
• Three phase controlled.
• Guided model selection. Easy to use selection tool to
select the appropriate soft starter model depending on
the application type.
Applications
RSWT soft starters are the ideal solution for 3-phase xed speed AC pumps and ventilators where there is the
need to reduce the starting current and/or minimise stresses on the motor during start and stop.
The RSWT offers a number of integrated diagnostic functions that can replace additional components inside
the electrical panel.
Typical applications include: pumps and fans.
Main functions
• Soft starting and soft stopping of pumps and ventilators.
• Integrated electronic overload protection (Class 10).

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RSWT DS ENG17/05/2018
References
Order code
RSW T V 1
Enter the code entering the corresponding option instead of
Code Option Description Notes
R-
S-Soft starter
W-Pump and ventilator
T-3 phase
40 220 – 400 VAC +10% -15% operational voltage (Ue)
60 220 – 600 VAC +10% -15% operational voltage (Ue)
12 12 Arms
Rated operational current
@ 40°C
16 16 Arms
25 25 Arms
32 32 Arms
37 37 Arms
45 45 Arms
55 55 Arms
70 70 Arms
90 90 Arms
E0 110 - 400 VAC +10% -15% control voltage (Uc)
Supply voltage: internally supplied
F0 24 VAC/DC +10% -10% control voltage (Uc)
Supply voltage: internally supplied
FF 24 VAC/DC +10% -10% control/supply voltage
Supply voltage: externally supplied
GG 100 - 240 VAC +10% -15% control/supply voltage
Supply voltage: externally supplied
V-
1-With integrated motor overload protection (Class 10)
1With PTC
0No PTC
1With fan RSWT 75 mm, RSWT 120
mm only.
0No fan

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Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Selection guide
Operational voltage: 400VAC Operational voltage: 600VAC
Rated opera-
tional current
(Ie)
Control voltage
110 - 400 VAC
Control voltage
24 VAC/DC
Control/supply voltage
100 - 240 VAC
Control/supply
voltage
24 VAC/DC
12 Arms RSWT4012E0V10 RSWT4012F0V10 RSWT6012GGV10 RSWT6012FFV10
16 Arms RSWT4016E0V10 RSWT4016F0V10 RSWT6016GGV10 RSWT6016FFV10
25 Arms RSWT4025E0V10 RSWT4025F0V10 RSWT6025GGV10 RSWT6025FFV10
32 Arms RSWT4032E0V110 RSWT4032F0V110 RSWT6032GGV110 RSWT6032FFV110
37 Arms RSWT4037E0V110 RSWT4037F0V110 RSWT6037GGV110 RSWT6037FFV110
45 Arms RSWT4045E0V111 RSWT4045F0V111 RSWT6045GGV111 RSWT6045FFV111
55 Arms RSWT4055E0V111 RSWT4055F0V111 RSWT6055GGV111 RSWT6055FFV111
70 Arms RSWT4070E0V111 RSWT4070F0V111 RSWT6070GGV111 RSWT6070FFV111
90 Arms RSWT4090E0V111 RSWT4090F0V111 RSWT6090GGV111 RSWT6090FFV111
Further reading
Information Where to nd it
RSWT 45mm instruction manual http://www.productselection.net/MANUALS/UK/mc_il_rswt_il.pdf
RSWT 75mm/RSWT 120mm instruc-
tion manual http://www.productselection.net/MANUALS/UK/mc_il_rswt_75_il.pdf
RSWT Troubleshooting guide http://www.gavazziautomation.com/document/manual/mc_RSWT_qsg.pdf
CAD drawings (RSWT 45mm) http://www.productselection.net/DXF/MC_RSWT45_12_16.zip
http://www.productselection.net/DXF/MC_RSWT45_25.zip
CAD drawings (RSWT 75mm) http://www.productselection.net/DXF/MC_RSWT_75mm_NO_FAN.zip
http://www.productselection.net/DXF/MC_RSWT_75mm_WITH_FAN.zip
CAD drawings (RSWT 120mm) http://www.productselection.net/DXF/MC_RSWT_120mm.zip

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Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Selection guide and typical application settings
Category Type Trip Class Ramp-up
setting [s]
Ramp-down
setting [s]
FLC setting
[Arms]
Pumps
Waste water pump 10 2 to 5 0 1.2 x Motor FLC
Centrifugal pump 10 5 to 10 5 to 10 1 x Motor FLC
Vacuum pump 10 2 to 5 0 1 x Motor FLC
Fans
Centrifugal fan (<0.5m diameter) 10 5 to 10 0 1 x Motor FLC
Centrifugal fan (>0.5m diameter) 20 10 to 20 0 1.2 x Motor FLC
Vacuum blowers 10 5 to 10 0 1 x Motor FLC
Note: For Trip class 20 applications we recommend the use of an external overload protection due to the
higher FLC setting that is required on RSWT. The FLC setting for Class 20 applications needs to be set to a
higher value with respect to the motor FLC in order not to trip the electronic motor overload protection available
on the RSWT soft starters.

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RSWT
RSWT DS ENG17/05/2018
Motor FLC
[A]
Power kW
@ 400V
HP Rating
@ 400V Trip class 5 Trip class 10 Trip class 20
3.4 1.5 2 RSWT4012... RSWT4012... RSWT4012...
5 2.2 3 RSWT4012... RSWT4012... RSWT4012...
6 3.0 4 RSWT4012... RSWT4012... RSWT4012...
9 3.7 5 RSWT4012... RSWT4012... RSWT4025...
12 5.5 7.5 RSWT4012... RSWT4012... RSWT4032...
16 7.5 10 RSWT4016... RSWT4016... RSWT4032...
22 11 15 RSWT4025... RSWT4025... RSWT4055...
30 15 20 RSWT4032... RSWT4032... RSWT4055...
37 18.5 25 RSWT4037... RSWT4037... RSWT4070...
45 22 30 RSWT4045... RSWT4045... RSWT4090...
55 30 40 RSWT4055... RSWT4055... ■
70 37 50 RSWT4070... RSWT4070... ■
85 45 60 RSWT4090... RSWT4090... ■
Motor FLC
[A]
Power kW
@480V
HP Rating
@575V Trip class 5 Trip class 10 Trip class 20
2.7 1.5 2 RSWT6012... RSWT6012... RSWT6012...
3.9 2.2 3 RSWT6012... RSWT6012... RSWT6012...
5 3 4 RSWT6012... RSWT6012... RSWT6012...
6 3 5 RSWT6012... RSWT6012... RSWT6012...
9 5 7.5 RSWT6012... RSWT6012... RSWT6025...
11 7.5 10 RSWT6012... RSWT6012... RSWT6032...
16 10 15 RSWT6016... RSWT6016... RSWT6032...
22 15 20 RSWT6025... RSWT6025... RSWT6045...
27 20 25 RSWT6032... RSWT6032... RSWT6055...
32 22 30 RSWT6032... RSWT6032... RSWT6070...
41 30 40 RSWT6045... RSWT6045... RSWT6090...
52 40 50 RSWT6055... RSWT6055... ■
62 45 60 RSWT6070... RSWT6070... ■
77 55 75 RSWT6090... RSWT6090... ■
CARLO GAVAZZI compatible components
Purpose Component name/code Notes
Manual motor starters
GMS-32 -
GMS-63 -
GMS-100 -
:
S: standard
H: high breaking capacity
Finger guards RFCG X6 6 pcs per box
Cooling fan RFAN-75-40 12 X1
For RSWT..45 to RSWT..90 only
Rated voltage : 12 VDC
Power consumption: 0.6 W

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RSWT DS ENG17/05/2018
Structure
Element Component Function
ARamp-up time selector Sets the desired motor starting time.
BRamp-down time selector Sets the desired motor stopping time.
CFLC knob selector
Sets the motor full load current (FLC). The FLC is setting is used by the RSWT
for the overload protection and for the maximum current allowed during motor
start.
DTest/Reset
Simulate overload alarm (press for 1 sec when RSWT is in Idle state)
Set alarm recovery mode (press for 5 sec when RSWT is in Idle state)
Reset alarms (press for <1sec when RSWT is in alarm mode and alarm mode
is Manual)
E1 LED indicators Supply. Indicates that the RSWT supply is ON.
E2 LED indicators
Manual. Indicates the alarm reset mode.
Manual reset mode - LED ON, Auto reset mode - LED OFF
(Factory default setting: Auto, LED OFF)
E3 LED indicators Alarm. Indicates that the RSWT is in alarm. The number of ashes indicates
the alarm type.
E4 LED indicators Ramping/bypass. Indicates whether RSWT is in ramping (ashing) or bypass
(fully ON).
RSWT 45mm RSWT 75mm RSWT 120mm
A
B
C
D
E1
E2
E3
E4
A
B
C
D
E1
E2
E3
E4
A
B
C
D
E1
E2
E3
E4

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RSWT DS ENG17/05/2018
Mode of operation
The RSWT…V10/ V110/ V111 soft starter series features 3-knob settings and an additional push button to test the overload
protection, reset the alarms and for setting the alarm recovery to Manual or Auto.
Step 1: Set the ramp-up time
• Set the knob to the desired starting time as required for the specic application.
Step 2: Set the ramp-down time
• Set the knob to the desired stopping time as required for the specic application. In this case ramp-down time can be set
to a different value from that of the ramp-up time.
• Note: If no soft-stop is required, set the ramp-down knob from 0 to 1sec.
Step 3: Set the full load current (FLC)*
• Adjust the knob setting to the FLC value corresponding to the pump/motor name plate to ensure proper overload protection
* Note: Refer to section “Selection Guide and typical application settings” section on page 3 in case of Trip Class 20 loads.
Step 4: Set the alarm recovery mode
• Make sure the RSWT is in idle mode (Green LED ON)
• To set the alarm recovery to auto, press the Test/Reset button for a minimum of 5secs. The MANUAL LED (yellow LED)
will turn OFF indicating that the alarms will follow an auto-recovery routine.
• To set the alarm recovery to MANUAL the same procedure as described above applies
• Note: The RSWT…V10/ V110/ V111 have a default setting of auto alarm recovery (yellow LED MANUAL OFF)
Step 5: Test the overload function
• To make sure that the overload function is working properly press the TEST/RESET button (during Idle) for about 1sec.
The RSWT will trip and the red LED will ash 8 times indicating an overload alarm. The alarm relay (11,12) will also
change state to Open.
Note: for RSWT32 to RSWT90 models, relay (11, 12, 14) will change state.
IMPORTANT: The RSWT knob settings are only checked during IDLE status. Changes in the knob settings dur-
ing Ramping/Bypass status will only be affected during the following start/ stop.
Setting procedure

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RSWT
RSWT DS ENG17/05/2018
Mode of operation
Starting Method
The RSWT series of soft starters is based on a current ramp starting methodology to limit the motor starting current and, at
the same time minimise water hammering effects. Additionally, the RSWT is equipped with an intelligent and self-learning
algorithm to adjust the starting torque automatically at every start. The algorithm makes use of the internal current and
voltage measurement circuits to detect when the motor starts to rotate. During every start, the RSWT adjusts the starting
parameters to achieve a ramp-up time as close as possible to the one set by the user. This function is done automatically
by the RSWT and within 5 starts (typically) the proper starting parameters will be found (assuming the load is the same).
During ramp-down, the RSWT will use the “self-learned” parameters to adjust the ramp-down time in such a way to respect
the setting done by the user on the ramp-down knob.
Important: Due to the self-learning algorithm present on the RSWT series, when the RSWT is rst tested on a small motor,
the starting parameters will be optimised for that motor size. If the same RSWT is then installed/ tested on a larger motor,
the starting parameters will be optimised during the rst start and the RSWT might trigger an alarm. If this happens, fol-
lowing the alarm recovery period, the RSWT will update the(self-learned) start parameters and perform another start. This
process will then continue during successive starts such that the optimal starting parameters are found.
User ramp-up seng
Default starng current
Self-adjustment (1) starng current
∆
Time (sec)
Current (A
rms
)
∆
Self-adjustment (n) starng current
Actual start me
(measured by RSWT)
Current (Arms)
Current (Arms)
Time (sec) Time (sec)
User ramp-up seng User ramp-up seng
Start 1: RSWT starts from default starting voltage/torque (internal) value.
The pump start time can be shorter/longer than user ramp-up setting.
Start 2: During the 2nd start, the RSWT will start with the “self-learned”
start parameters (from the previous start) to reduce the difference be-
tween the user-set ramp-time vs the actual ramp-time measured by the
RSWT ( Δtime).
Start n: For the nth start, the RSWT algorithm will keep the ramp-time as
close as possible to the user set-ramp time. The self-adjusting algorithm
will remain active at every start to make sure that the RSWT adapts the
starting parameters to any load changes.
Note: During motor starting, the RSWT will limit the current to a maximum of 3.5xFLC setting.
User ramp-up seng
Default starng current
Self-adjustment (1) starng current
∆
Time (sec)
Current (Arms)
∆
Self-adjustment (n) starng current
Actual start me
(measured by RSWT)
Current (Arms)
Current (Arms)
Time (sec)
Time (sec)
User ramp-up seng
User ramp-up seng
User ramp-up seng
Default starng current Self-adjustment (1) starng current
∆
Time (sec)
Current (Arms)
∆
Self-adjustment (n) starng current
Actual start me
(measured by RSWT)
Current (Arms)
Current (A
rms
)
Time (sec)
Time (sec)
User ramp-up seng
User ramp-up seng

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RSWT DS ENG17/05/2018
Features
General
RSWT 45mm RSWT 75mm RSWT 120mm
Material PA66
Assembly DIN or panel
Protection grade IP20
Weight 0.5 to 0.85 Kg About 2.3 Kg About 3.5 Kg
Overvoltage category Cat. III
Fig. 1 RSWT 45mm (12 Arms - 16 Arms)
Fig. 2 RSWT 45mm (25 Arms)

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RSWT DS ENG17/05/2018
Fig. 3 RSWT 75mm (32 Arms - 55 Arms)
Fig. 4 RSWT 120mm (70 Arms - 90 Arms)

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RSWT DS ENG17/05/2018
Settings
RSWT 45mm RSWT 75mm RSWT 120mm
Ramp-up time 1 - 20 s
Ramp-down time 0 - 20 s
Initial torque Automatically determined by RSWT
FLC range settings
RSWT 12: 6 - 12 A
RSWT 16: 10 - 16 A
RSWT 25: 13 - 25 A
RSWT 32: 20 - 32 A
RSWT 37: 25 - 37 A
RSWT 45: 33 - 45 A
RSWT 55: 43 - 55 A
RSWT 70: 52 - 70 A
RSWT 90: 66 - 90 A
Power Supply
RSWT40.. RSWT60..
Operational voltage range 187 - 440 VACrms 187 - 660 VACrms
Supply current at idle < 30 mArms
Blocking voltage 1200 Vp 1600 Vp
Rated AC frequency 50/60 Hz (+/- 10%)
Rated insulation voltage 630 VAC 690 VAC
Dielectric withstand voltage:
Supply to input
Supply to heatsink
2.5 kVrms
2.5 kVrms
Integrated varistor Yes
Environmental
Working temperature -20°C to +60°C (-4°F to +140°F). Note: for temperatures > 40°C derating applies.
Storage tempreature -40°C to +80°C (-40°F to +176°F).
Relative humidity < 95% non-condensing @ 40°C.
Pollution degree 2
Degree of Protection
(control circuit) IP20 (EN/IEC 60529)
Installation category III
Installation altitude 1000 m

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Compatibility and conformity
Conformance
IEC/EN 60947-4-2
UL508 Listed (E172877)
cUL Listed (E172877)
CCC
Approvals
Electromagnetic compatibility (EMC) - immunity
Immunity IEC/EN 61000-6-2
Electrostatic discharge (ESD)
Immunity
Air discharge, 8kV
Contact, 4kV
IEC/EN 61000-4-2
Performance Criteria 2
Performance Criteria 2
Radiated radio frequency
Immunity
3V/m, 80 - 1000 MHz
IEC/EN 61000-4-3
Performance Criteria 1
Electrical Fast Transient
(Burst) Immunity
Output: 2kV
Input: 1kV
IEC/EN 61000-4-4
Performance Criteria 2
Performance Criteria 2
Conducted Radio Frequency
Immunity
10V/m, 0.15 - 80 MHz
IEC/EN 61000-4-6
Performance Criteria 1
Electrical Surge Immunity
Output, line to line, 1kV
Output, line to earth, 2kV
Input, line to line, 1kV
Input, line to earth, 2kV
IEC/EN 61000-4-5
Performance Criteria 2
Performance Criteria 2
Performance Criteria 2
Performance Criteria 2
Voltage Dips Immunity
0% for 10ms/20ms,
40% for 200ms
70% for 500ms
IEC/EN 61000-4-11
Performance Criteria 2
Performance Criteria 2
Performance Criteria 2
Electromagnetic compatibility (EMC) - emissions
Emission IEC/EN 61000-6-3
Radio Interference
eld emission (Radiated)
30 - 1000MHz
IEC/EN 55011
Class A (Industrial)
Radio interference
eld emissions (conducted)
IEC/EN 55011
Class A (Industrial)

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RSWT DS ENG17/05/2018
Inputs
RSWT40..E0V.. RSWT40..F0V.. RSWT60..GGV.. RSWT60..FF..
Control voltage (Uc)
A1 - A2:
110 - 400 VAC
+10%, -15%
A1 - A2:
24 VAC/VDC
+10%, -10%
ST: 100 - 240 VAC
+10%, -15%
ST: 24 VAC/DC
+10%, -10%
Control voltage range (Uc) 93.5 - 440 VAC 21.6 - 26.4
VAC/DC 85 – 264 VAC 21.6 - 26.4 VAC/DC
Maximum pick-up voltage 80 VAC 20.4 VAC/DC 80 VAC 20.4 VAC/DC
Minimum drop out voltage 20 VAC 5 VAC/DC 20 VAC 5 VAC/DC
Supply voltage range (Us) - -
A1 - A2:
100 - 240 VAC
+10%, -15%
A1 - A2:
24 VAC/DC
+10%, -10%
Rated AC frequency 45 - 66 Hz 45 - 66 Hz
(applies to 24 VAC supply)
45 - 66 Hz
(applies to 24 VAC supply)
Rated insulation voltage (Ui) 500 VAC
Overvoltage category III
Dielectric strength:
Dielectric withstand voltage
Rated impulse withstand volt-
age
2 kVrms
4 kVrms
Control input current 0.5....5 mA 0.4....1 mA 0.4....3 mA 0.4....1 mA
Input to output response time
(Mains supply already present) < 300 msec
Input to output response time
(Mains supply applied with
control)
2.5 sec 2 sec
Integrated varistor Yes
* Note 1: For the Canadian application, the control terminals A1, A2 (or A1, A2, ST for RSWT60 versions) of
the RSWT devices shall be supplied by a secondary circuit where power is limited by a transformer, rectier,
voltage divider, or similar device that derives power from a primary circuit, and where the short-circuit limit
between conductors of the secondary circuit or between conductors and ground is 1500VA or less. The short-
circuit volt ampere limit is the product of the open circuit voltage and the short circuit ampere.
Note 2: RSWT60 soft starters require a separate single phase control source. RSWT60...FF versions: 24VAC/
DC and RSWT60...GG versions: 100-240VAC. Output connections (1 L1, 3 L2, 5 L3, 2 T1, 4 T2,6 T3) are not
galvanically isolated from the external supply connections (A1, A2, ST).

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Outputs
RSWT..12…. RSWT..16…. RSWT..25…. RSWT..32…. RSWT..37….
Overload cycle acc.
to EN/IEC 60947-4-2
@ 40°C surrounding temperature
AC53b:4-6:174 AC53b:
3.5-5:175
AC53b:
4 - 6:174
RSWT40:
AC53b:
3.5 - 6: 174
RSWT60:
AC53b:
4 - 6: 174
Maximum number of starts per hour
@ 40°C @ rated overload cycle
20 20
Rated operational current @ 40°C 12 AAC 16 AAC 25 AAC 32 AAC 37 AAC
Rated operational current @ 50°C 11 AAC 15 AAC 23 AAC 29 AAC 34 AAC
Rated operational current @ 60°C 10 AAC 13 AAC 21 AAC 27 AAC 31 AAC
Minimum load current 2 AAC 2 AAC 2 AAC 5 AAC 5 AAC
RSWT..45…. RSWT..55…. RSWT..70…. RSWT..90….
Overload cycle acc.
to EN/IEC 60947-4-2
@ 40°C surrounding temperature
RSWT40:
AC53b: 3.5 - 6: 174
RSWT60:
AC53b: 4 - 6: 174
AC53b:
3 - 12: 168 AC53b: 4-6: 174
Maximum number of starts per hour
@ 40°C @ rated overload cycle
20
Rated operational current @ 40°C 45 AAC 55 AAC 70 AAC 90 AAC
Rated operational current @ 50°C 41 AAC 50 AAC 64 AAC 83 AAC
Rated operational current @ 60°C 37 AAC 46 AAC 59 AAC 76 AAC
Minimum load current 5 AAC 5AAC 5 AAC 5 AAC
Note: The overload cycle describes the switching capability of the soft starter at a surrounding temperature
of 40ºC as described in EN/IEC 60947-4-2. An overload cycle AC53b:4-6:174 means that the soft starter can
handle a starting current of 4x Ie for 6 seconds followed by an OFF time of 174 seconds.

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Auxiliary relays
RSWT..12…. - RSWT..25…. RSWT..32…. - RSWT..90….
Number of output relays 2 3
Function of relays Alarm, bypassed (top of ramp). Alarm, bypassed (top of ramp), run.
Rated operational voltage 250 VAC/30 VDC
Rated insulation voltage 250 VAC
Dielectric withstand voltage
(Coil to contacts) 2.5 kV
Overvoltage category II
Type of control circuit Electromechanical relay
Number of contacts Alarm and bypassed: 1 Alarm and bypassed: 2
Run: 1
Type of contacts Alarm: normally closed (NC)
Bypassed: normally open (NO)
Alarm and bypassed: changeover (NO,
NC)
Run: normally open (NO)
Type of current AC / DC
Rated operational current 3 Arms @ 250 VAC, 3 Arms @ 30 VDC

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Performance
Current / power ratings: kW and HP @ 40°C
Model IEC Rated
Current 220 - 240 VAC 380 - 415 VAC 440 - 480 VAC 550 - 600 VAC
RSWT..12 12 Arms 3 kW / 3 HP 5.5 kW / 5 HP 5.5 kW / 7.5 HP 9 kW / 10 HP
RSWT..16 16 Arms 4 kW / 5 HP 7.5 kW / 7.5 HP 9 kW / 10 HP 11 kW / 15 HP
RSWT..25 25 Arms 5.5 kW / 7.5 HP 11 kW / 10 HP 11 kW / 15 HP 20 kW/ 20 HP
RSWT..32 32 Arms 9 kW / 10 HP 15 kW / 15 HP 18.5 kW / 20 HP 22 kW/ 30 HP
RSWT..37 37 Arms 9 kW / 10 HP 20 kW / 20 HP 22 kW / 25 HP 30 kW/ 30 HP
RSWT..45 45 Arms 11 kW / 15 HP 22 kW/ 25 HP 22 kW/ 30 HP 37 kW/ 40 HP
RSWT..55 55 Arms 15 kW / 20 HP 30 kW / 30 HP 30 kW / 40 HP 45 kW / 50 HP
RSWT..70 70 Arms 20 kW / 25 HP 37 kW / 40 HP 45 kW / 50 HP 55 kW / 60 HP
RSWT..90 90 Arms 22 kW / 30 HP 45 kW / 50 HP 55 kW / 60 HP 75 kW / 75 HP
Ratings:
kW rating according to: IEC/EN 60947-4-2
HP rating according to: UL508
Starts per hour
The table below indicates the maximum number of starts/hr that can be done by the different RSWT models at
different operating currents with a surrounding temperature of 40°C.
Model Operational current
6 Arms 12 Arms 16 Arms 25 Arms 32 Arms 37 Arms 45 Arms
RSWT..12 45 20 - - - - -
RSWT..16 60 25 20 - - - -
RSWT..25 100 50 35 20 - - -
RSWT..32 - 65 45 25 20 - -
RSWT..37 - 80 55 30 24 20 -
RSWT..45 - 100 75 40 30 25 20
Model Operational current
25 Arms 32 Arms 37 Arms 45 Arms 55 Arms 70 Arms 90 Arms
RSWT..55 50 40 30 25 20 - -
RSWT..70 70 50 45 35 25 20 -
RSWT..90 95 70 60 45 35 10 20

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Connection Diagrams
Terminal markings
Fig. 5 RSWT 45mm Fig. 6 RSWT 75mm Fig. 7 RSWT 120mm
Marking RSWT 45mm RSWT 75mm / RSWT 120mm
RSWT40 RSWT60 RSWT40 RSWT60
1 L1, 3 L2, 5 L3 Line connections
2 T1, 4 T2, 6 T3 Load connections
A1, A2 Control voltage Supply voltage Control voltage Supply voltage
ST - Control voltage - Control voltage
11, 12 Alarm indication (normally closed, NC)
11, 14 - Alarm indication (normally open, NO)
21, 22 - Top of ramp indication (normally closed, NC)
21, 24 Top of ramp indication (normally open, NO)
31, 34 - Run relay (normally open, NO)
R1, R2 - Remote reset of alarms
P1, P2 - PTC input
F1+, F1- * - Fan connection
Note:
For the 24VDC (RSWT40..F0, RSWT60..FF) models, connect A1 to the positive (+) and A2 to the
negative (-) terminal.
* Only for RSWT..45 to RSWT..90 models

18
Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Wiring diagrams
Valid up to 400 VAC
RSWT40...E0V..
RSWT...E0V.. RSWT40...F0V..

19
Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Wiring diagrams
IMPORTANT: L1, L2, L3 should already be connected when A1, A2 and ST signals are applied. A minimum delay of 200ms should
be allowed between switching of L1, L2, L3 and A1, A2 and ST respectively. If L1, L2 and L3 are not present, when A1, A2 is applied
the “Line voltage out of range alarm will be triggered”. The alarm will automatically recover if L1, L2, L3 are within operational range
for 1 sec (on power up only).
Note 1: For RSWT60..FFV... models apply 24VAC/DC across A1, A2 terminals. For RSWT60..GGV... models apply 100 - 240VAC across A1, A2 terminals.
Note 2: For DC supply, connect A1 to the positive (+) and A2 to the negative (-) terminal of the power supply.
Note 3: ST terminal has to be at the same potential of A2 (refer to wiring diagrams)
RSWT60...FFV.. / RSWT60...GG..

20
Carlo Gavazzi LTD
RSWT
RSWT DS ENG17/05/2018
Connection specications
Line conductors 1 L1, 3 L2, 5 L3, 2 T1, 4 T2, 6 T3 Acc. to EN60947-1
RSWT...12 to RSWT...25 RSWT...32 to RSWT...90
Flexible 2.5 - 10 mm2
2.5 - 2 x 4 mm2-
Rigid (solid or stranded) 2.5 .... 10 mm22 x (10...50 mm2)
Flexible with end sleeve
(ferrule) 2.5 .... 10 mm22 x (10...50 mm2)
UL/cUL rated data
Rigid (stranded)
Rigid (solid)
Rigid (solid or stranded)
AWG 6...14
AWG 10...14
AWG2 x 10...2 x 14 2 x (AWG 8...1/0)
Terminal screws M4 M8
Maximum tightening torque 2.5 Nm (22 lb.in) with posidrive bit 2 12 Nm (106 lb.in) with Torx TT40 bit
Stripping length 8.0 mm 20.0 mm
Secondary conductors A1, A2 Acc. to EN60998
RSWT...12 to RSWT...25 RSWT...32 to RSWT...90
Flexible 0.5 .... 1.5 mm2
Rigid (solid or stranded) 0.5 .... 2.5 mm2
Flexible with end sleeve
(ferrule) 0.5 .... 1.5 mm2
UL/cUL rated data
Rigid (solid or stranded) AWG 10...18
Terminal screws M3
Maximum tightening torque 0.6 Nm (5.3 lb.in) with posidrive bit 0
Stripping length 6.0 mm
Auxiliary conductors 11, 12, 21, 24, (31, 34)*, ST**
RSWT...12 to RSWT...25 RSWT...32 to RSWT...90
Rigid (solid or stranded) 0.05 ... 2.5 mm2
Flexible with end sleeve
(ferrule) 0.05 ... 1.5 mm2
UL/cUL rated data
11, 12, 21, 24, (31, 34)*, ST
Rigid (solid or stranded)
AWG 30 … 12
AWG 24 ... 12
Terminal screws
11, 12, 21, 24, (31, 34)*, ST M3
Maximum tightening torque
11, 12, 21, 24, (31, 34)*, ST 0.45 Nm (4.0 lb.in) posidrive bit 0
Stripping length 6.0 mm
Use 75ºC Copper (Cu) conductors
* For RSWT...32 to RSWT...90 models only
** For RSWT60 models only