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Automation
MDW Miniature Circuit Breakers
DWP Residential Molded Case Circuit
Breakers
RDW Residual Current Circuit Breakers
SPW Surge Suppressors
www.weg.net
Contents
MDW Miniature Circuit Breakers.............................................................................................. 3
DWP Molded Case Circuit Breakers........................................................................................ 3
RDW Residual Current Circuit Breakers................................................................................... 4
SIW Switch-disconnectors....................................................................................................... 5
SPW Surge Suppressors......................................................................................................... 5
Dimensions............................................................................................................................. 11
2
MDW / DWP / RDW / SPW
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MDW Miniature Circuit Breakers
The MDW thermomagnetic circuit breaker was developed for the protection of electrical installation against overload and short
circuit. With currents that vary from 2 to 100A, the MDW is avaliable with 1, 2, 3 or 4 poles. Thermal and magnetic triggers for
protection against overload and short circuit act quiclky in detecting and extinguishing the failure. It is equipped with a “free
trigger” mechanism guaranteeing miniature circuit breaker performance even with the activation lever locked in the “off”
position. Special contacts ensure safety against welding in case of short circuit as well as the arc extinction chamber, which
absorbs the electric arc energy, extinguishing it when a short circuit occurs.
The MDW miniature circuit breakers also have auxiliary contact blocks (1 NOC), supplied as accessories.
Minutes
seconds
B Curve
The main characteristic of the B curve is the instantaneous
trigger for currents between 3 to 5 times the rated current.
Therefore, they are mainly applied for the protection of
circuits with resistive characteristics or involving significant
cable distances. For example: Incandescent lamps, showers,
electric heaters and so forth.
g Trigger Time
Trigger curves
The MDW miniature circuit breakers meet the B and C trigger
curve characteristics in accordance with the IEC 60898 Standard, enabling their use in the most varied applications.
C Curve
The main characteristic of the C curve is the instantaneous
trigger for currents between 5 to 10 times the rated current.
Thus, they are mainly applied for the protection of circuits
with inductive load installation.
For example: Fluorescent lamps, refrigerators, washing
machines and so forth.
g DWP Residential Molded Case Circuit Breakers
Available from 100 to 225A, 3 pole version only, the DWP
series circuit breakers have been developed for the
protection of electrical installations against overload and
short circuit.
These protections are ensured by its thermal and magnetic
triggers. Terminal boxes can be supplied as accessories for
the DWP225 model, enabling direct cable connection up to
120 mm2 .
MDW / DWP / RDW / SPW
3
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RDW Residual Current Circuit Breakers
Residential current circuit breakers are devices used for the protection of people and installations as to direct or indirect
contacts. They protect against the effects of ground leakage, by detecting these leakages that can occur in electrical
installation and opening the circuit.
Regardless of the ground scheme, the use of these devices with sensitivity equal to or less than 30mA is recommended in
circuits:
a) situated in locations containing bath or shower.
b) current sockets located in areas outside the building.
c) current sockets that could have to supply outside equipment.
d) kitchens, dining areas, laundries, service areas, garages and inside areas subjected to water or washing through normal
use.
30mA or 300mA sensitivity
The sensitivity or rated residual operating current (IDn) is the
first factor to dictate if this product can be applied for
protection against indirect contacts and for complementary
protection against direct contacts, or if it can only be
appplied against indirect contacts.
The version with 30mA sensitivity is considered to be of high
sensitivity and can be used both for protection against
indirect contacts as well as for complementary protection
against direct contacts, guaranteeing full user/person
protection.
The version with 300mA sensitivity is considered to be of low
sensitivity and can be used only for the protection of
installations against indirect contacts or against fire risk
(according to installation standards), limiting the fault/ground
leakage currents to locations that process or store
inflammable materials, such as paper, straw, wood
fragments, plastics, and so forth.
Operating Principle
The residual current circuit breaker continuously measures
the vectorial sum of the currents that go through circuit
conductors. If the electrical curcuit is running smoothly, the
vetorial sum of the currents in its conductors is practically
null.
Should an insulation failure occur in a piece of equipment
supplied by this circuit, a ground fault current will appear.
When this occurs, the vectorial sum of the currents in the
conductors monitored is no longer null and the device
detects this current difference, opening the circuit.
Operating Curve
Operating Principle
g Zone 1
No perceivable effect.
g Zone 2
Physicological effects generally not damaging
g Zone 3
Notable physicological effects (cardiac arrest, respiratory
arrest, muscular contractions, generally reversable).
g Zone 4
Higher probability of serious physicological effects and
irreversible cardiac arrest and respiratory arrest.
Residual current breaker with 30 mA sensitivity operating
range.
Connection diagrams
In the same way, if somebody touches a live part of the
protected circuit, the current will circulate through the
person’s body, equally causing an umbalance in the vectorial
sum of the currents. This imbalance will also be detected as if
it were a ground fault current.
Notes:
(1) The 2 pole version are normally used in phase/neutral or phase/phase
systems.
(2) The 4 pole version can be used in any type of network.
(3) All phase conductors, including neutral, can be connected to RDW, however, the ground conductor must not be connected. The neutral conductor in
the RDW outlet must remain insulated throughout the installation and must
not be connected to the ground.
(4) If a 4 pole RDW is used as a 2 pole, the phase must pass through terminals 5-6 and the neutral through 7-8.
4
MDW / DWP / RDW / SPW
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SIW Switch-disconnectors
The SIW switch-disconnectors have the same house as the
miniature circuit breakers for the 2, 3 and 4 pole versions.
However, they are not provided with thermal and magnetic
triggers, i.e. they do not have trigger curves, their function is
only to disconnect electrical circuits with currents of up to
100A in accordance with IEC 60947-3 standard.
SPW Surge Suppressors
The surge suppressors (SPD) from the SPW series were
developed to protect equipment and installations against
surges and over voltages coming from direct or indirect
discharges in the electrical supply, more commonly caused
by lightning and/or operations in the electrical system.
Regardless of the type or origin, the discharges generate a
sudden increase in supply voltage – momentaneous surges
and over voltages – which damage electro-electronic
equipment and the installation itself, resulting in much harm.
Protection Class
The Class I SPD are indicated for locations subject to high
intensity discharges, a typical characteristic of installations
and buildings directly supplied by overhead wires exposed to
atmospheric discharges. Installation of a class I SPD is
recommended at the inlet point of a building’s electrical
supply.
At locations where the electrical supply is not exposed to
direct atmospheric discharges, typical of internal residential
and/or building installations supplied by a built-in electrical
supply, Class II SPD are indicated. Its installation is
recommended in the distribution board.
Features
The SPW series are equipped with a status signaler, located
on the front of the device.
Although the SPDs operate many times, replacement of the
module is only necessary when the signaler is red.
The SPW series are Plug-in type. This concept enables the
user to replace the protection module without having to
disconnect the cables, as the base remains installed.
MDW / DWP / RDW / SPW
5
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Selection guide / Technical Data
MDW Miniature Circuit Breakers
References
Rated current
In (A)
1 Pole
2 Pole
Curve B
Curve C
3 Pole
Curve B
Curve C
4 Pole
Curve B
Curve C
2
MDW-C2
MDW-C2-2
MDW-C2-3
4
MDW-C4
MDW-C4-2
MDW-C4-3
Curve C
6
MDW-B6
MDW-C6
MDW-B6-2
MDW-C6-2
MDW-B6-3
MDW-C6-3
MDW-C6-4
10
MDW-B10
MDW-C10
MDW-B10-2
MDW-C10-2
MDW-B10-3
MDW-C10-3
MDW-C10-4
16
MDW-B16
MDW-C16
MDW-B16-2
MDW-C16-2
MDW-B16-3
MDW-C16-3
MDW-C16-4
20
MDW-B20
MDW-C20
MDW-B20-2
MDW-C20-2
MDW-B20-3
MDW-C20-3
MDW-C20-4
MDW-C25-4
25
MDW-B25
MDW-C25
MDW-B25-2
MDW-C25-2
MDW-B25-3
MDW-C25-3
32
MDW-B32
MDW-C32
MDW-B32-2
MDW-C32-2
MDW-B32-3
MDW-C32-3
MDW-C32-4
40
MDW-B40
MDW-C40
MDW-B40-2
MDW-C40-2
MDW-B40-3
MDW-C40-3
MDW-C40-4
MDW-C50-4
50
MDW-B50
MDW-C50
MDW-B50-2
MDW-C50-2
MDW-B50-3
MDW-C50-3
63
MDW-B63
MDW-C63
MDW-B63-2
MDW-C63-2
MDW-B63-3
MDW-C63-3
MDW-C63-4
80
MDW-B80
MDW-C80
MDW-B80-2
MDW-C80-2
MDW-B80-3
MDW-C80-3
MDW-C80-4
100
MDW-B100
MDW-C100
MDW-B100-2
MDW-C100-2
MDW-B100-3
MDW-C100-3
MDW-C100-4
TECHNICAL DATA
Standards
IEC 60898, IEC 60947-2
Rated operating voltage Ue
400 Vac
Rated insulation voltage Ui
660 Vac
Frequency
50 / 60 Hz
Rated currents In
2 to 100A
Short circuit breaking capacity - Ics / Icn
NM 60898
3 kA (6 to 100A); 1.5 kA (2A. 4A)
IEC 60947-2
5 kA (6 to 100A); 1.5 kA (2A, 4A)
B (3 to 5 times In)
Trigger curves
C (5 to 10 times In)
Number of poles
1, 2, 3 and 4P
Ambient temperature
-5 to 40 ºC
Electrical life
6000 operations
Mechanical life
20000 operations
Degree of protection
IP 20
Connection capacity
MDW (2 to 63A)
1 to 25 mm²
MDW (80A, 100A)
10 to 35 mm²
Mounting position
Without restriction
Assembly
DIN rail 35 mm
Weight (kg)
1 pole
0.105 (2 to 63A); 0.155 (80A. 100A)
2 pole
0.210 (2 to 63A); 0.315 (80A. 100A)
3 pole
0.315 (2 to 63A); 0.475 (80A. 100A)
4 pole
0.420 (2 to 63A); 0.630 (80A. 100A)
ACCESSORIES
Type
Contact configuration
Auxiliary contact block
1 REV
Application
References
MDW (2 to 63A)
MDW-BC1
MDW (80A, 100A)
MDW-BC2
Technical Data - Auxiliary contact block
Contact switching capacity
Weight (kg)
6
AC-14
6A (230Vac), 3A (400Vac)
DC-12
2A (60Vdc), 1A (125Vdc)
DC-13
6A (24Vdc), 2A (48Vdc)
0,04
MDW / DWP / RDW / SPW
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Selection Guide / Technical Data
DWP Residential Molded Case Circuit Breakers
Rated Current
In (A)
Triggers
Reference
100
DWP160-100-3
125
150
175
DWP160-125-3
DWP160-150-3
Fixed thermal and
magnetic
DWP225-175-3
200
DWP225-200-3
225
DWP225-225-3
TECHNICAL DATA
Standard
IEC 60947-2
Rated operating voltage Ue
690 Vac
Insulation rated voltage Ui
800 Vac
Impulse voltage Uimp
8 kV
Frequency
Rated ultimate short-curcuit breaking capacity - Icu
50 / 60 Hz
220/240V
22 kA
380/415V
12 kA
440V
6 kA
500V
5 kA
690V
3 kA
Rated service short-curcuit breaking capacity - Ics
100% Icu
Magnetic trigger
10x In
Use category
A
Ambient temperature
-5 to 40 ºC
DWP160
0.95
DWP225
2.09
Tripping Time (s)
Weight (kg)
MDW / DWP / RDW / SPW
7
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Selection guide / Technical Data
RDW Residual Current Circuit Breakers
Residual Rated Current (mA)
30
300
References
Rated Current In (A)
2 Pole
4 Pole
25
RDW30-25-2
RDW30-25-4
RDW30-40-4
40
RDW30-40-2
63
RDW30-63-2
RDW30-63-4
80
RDW30-80-2
RDW30-80-4
100
RDW30-100-2
RDW30-100-4
25
RDW300-25-2
RDW300-25-4
RDW300-40-4
40
RDW300-40-2
63
RDW300-63-2
RDW300-63-4
80
RDW300-80-2
RDW300-80-4
100
RDW300-100-2
RDW300-100-4
TECHNICAL DATA
IEC 61008
Standard
Rated operating voltage Ue
2 pole
230 Vac
4 pole
230/400 Vac
Rated insulation voltage Ui
500 Vac
Frequency
50 / 60 Hz
Residual rated currents IΔn
30 or 300 mA
Rated currents In
25 to 100A
Number of poles
2 and 4P
Type
AC
Resistance to short circuit
6 kA
Ambient temperature
-25 to 40 ºC
Electrical life
6000 operations
Mechanical life
10000 operations
Degree of protection
IP 20
Connection capacity
1 to 35 mm²
Mounting position
Without restriction
Assembly
DIN rail 35 mm
Weight (kg)
8
MDW / DWP / RDW / SPW
2 pole
0.255
4 pole
0.455
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Selection Guide / Technical Data
SIW Switch-disconnectors
References
Rated Current
In (A)
2 Pole
3 Pole
4 Pole
40
SIW-40-2
SIW-40-3
SIW-40-4
63
SIW-63-2
SIW-63-3
SIW-63-4
80
SIW-80-2
SIW-80-3
SIW-80-4
100
SIW-100-2
SIW-100-3
SIW-100-4
TECHNICAL DATA
Standard
IEC 60947-3
Rated operating voltage Ue
400 Vac
Rated insulation voltage Ui
660 Vac
Frenquency
50 / 60 Hz
Rated currents In
40 to 100A
Number of poles
2, 3 and 4P
Ambient temperature
-5 to 40 ºC
Electrical life
6000 operations
Mechanical life
20000 operations
Degree of protection
IP 20
Connection capacity
SIW (40 to 63A)
1 to 25 mm²
SIW (80A, 100A)
10 to 35 mm²
Mounting position
Without restriction
Assembly
DIN rail 35 mm
Weight (kg)
2 pole
0.165 (40 to 63A); 0.285 (80A, 100A)
3 pole
0.248 (40 to 63A); 0.428 (80A, 100A)
4 pole
0.330 (40 to 63A); 0.570 (80A, 100A)
ACCESSORIES
Type
Contact configuration
Application
References
Auxiliary contact block
1 REV
SIW (40A, 63A)
MDW - BC1
SIW (80A, 100A)
MDW - BC2
Technical Data - Auxiliary contact block
Contact switching capacity
Weight (Kg)
AC-14
6A/230Vac - 3A/400Vac
DC-12
2A/60Vdc - 1A/125Vdc
DC-13
6A/24Vdc - 2A/48Vdc
0.04
MDW / DWP / RDW / SPW
9
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Selection Guide / Technical Data
SPW Surge Suppressors (SPD)
Protection Class
Discharge Max. Current,
8/20µs wave
Imáx (kA)
Discharge Rated Current,
8/20µs wave In (kA)
Impulse Max. Current
Iimp (kA)
References
II
12
5
-
SPW275-12
II
20
10
-
SPW275-20
II
45
20
-
SPW275-45
II / I
60
30
12.5
SPW275-60/12.5
TECHNICAL DATA
Standard
IEC 61643
Continuous operating maximum voltage Uc
275 Vca
Level of protection Up
SPW275-12
1.0 kV
SPW275-20
1.2 kV
SPW275-45
1.5 kV
SPW275-60/12,5
1.5 kV
Frequency
50 / 60 Hz
Discharge maximum voltage Imáx
According to table above
Discharge rated voltage In
According to table above
Impulse maximum current Iimp
According to table above
Protection class
According to table above
Number of poles
1
Ambient temperature
-5 to 40 ºC
Degree of protection
IP 20
Connection capacity
1 to 25 mm²
Mounting position
Without restriction
Assembly
DIN rail 35 mm
Weight (kg)
SPW275-12
0.105
SPW275-20
0.11
SPW275-45
0.115
SPW275-60/12.5
0.12
ACCESSORIES
Type
Protection Module
Application
References
SPW 275-12
SPW - M275-12
SPW 275-20
SPW - M275-20
SPW 275-45
SPW - M275-45
SPW 275-60/12.5
SPW - M275-60/12.5
SPW Connection Scheme
10
MDW / DWP / RDW / SPW
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Dimensions (mm)
MDW (2A...63A)
SIW (40A, 63A) Series
17,7
53,1
35,4
70,8
MDW-BC/BC2
MDW (80A...100A) Series
RDW (2P, 4P) Series
DWP (175A...225A) Series
DPW (100A...150A) Series
SPW Series
MDW-BC Connection Scheme
11
12
14
MDW / DWP / RDW / SPW
11
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