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Introduction
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Siemens LV 10.1 · 2011
RCD modules
The RCDmodule is designed for retrofitting to the circuit breaker.
It can also be retrofitted by the customer.
The combination of SENTRON 3VL circuit breaker and RCD
module can be fed from the top or bottom.
All SENTRON 3VL circuit breakers with RCD modules are avail-
able with auxiliary switches, alarm switches, undervoltage and
shunt releases.
Protection of plant and equipment against overload or damage
by ground faults (ground-fault protection).
The RCD module trips the circuit breaker through vectorial sum-
mation current formation for all phase currents if the vectorial
sum of the currents in the poles (= the ground fault current) over-
shoots the pre-set response and delay time values. AC currents
and pulsating DC currents are measured (CBR, design A
according to EN 60947-2).
Main connections, basic equipment and options
Main connections
(see below for conductor cross-sections)
-
Scope of supply
@
Optional scope of supply
× Available
-- Not available
1)
Connecting terminal plate for flexible busbar; not for 690 V AC/600 V DC.
2)
Multiple feed-in terminal
3)
Circular conductor terminal also available.
Conductor cross-sections
1)
Cross-sections according to IEC 60999.
2)
Not for 690 V AC/600 V DC.
Box terminal
(for copper cables or solid/
flexible busbars)
Connection with screw terminal
(available with direct cable lug connec-
tion on VL160X, VL160, VL250, VL400)
Connection to front busbar connecting
bars (screw terminal required)
Circular conductor terminals
multiple feed-in terminal
(for Al/Cu terminal)
NSE0_00700
NSE0_00701
NSE0_00702
NSE0_01541
Circuit breaker
Connection overview and further options
Box terminals
Screw terminals
with metric thread for flat
connectors
Circular conductor
terminal/multiple feed-in
terminals
Rear
terminals
Front-accessible
connecting bars
VL160X
@
@
×
×
×
VL160
@
@
×
×
×
VL250
@
@
×
×
×
VL400
×
-
×
2)3)
×
×
VL630
×
1)
-
×
2)
×
×
VL800
--
-
×
2)
×
×
VL1250
--
-
×
2)
×
×
VL1600
--
×
--
×
-
Type
VL160X
3VL1
VL160
3VL2
VL250
3VL3
VL400
3VL4
VL630
3VL5
VL800
3VL6
VL1250
3VL7
VL1600
3VL8
Conductor cross-sections
Box terminals
1)
• Solid or stranded cable
Copper only mm
2
2.5 ... 95 2.5 ... 95 25 ... 185 50 ... 300 --
--
--
--
• Finely stranded with end sleeve
mm
2
2.5 ... 50 2.5 ... 50 25 ... 120 50 ... 240 --
--
--
--
• Flexible busbar
mm 12 × 10 12 × 10 17 × 10 25 × 10 --
--
--
--
Connecting terminal plate for flexible busbar
2)
mm --
--
--
--
2 units
10 × 32
--
--
--
Circular conductor terminal for cable
1)
• Solid or stranded cable
Cu or Al
mm
2
16 ... 70 16 ... 70 25 ... 185 50 ... 300 --
--
--
--
- With terminal cover
Cu or Al
mm
2
16 ... 150 16 ... 150 120 ... 240 --
--
--
--
--
• Finely stranded with end sleeve
mm
2
10 ... 50 10 ... 50 25 ... 120 50 ... 240 --
--
--
--
Multiple feed-in terminal
1)
• Solid or stranded cable
Cu or Al
mm
2
--
--
--
2 units
50 ... 120
2 units
50 ... 240
3 units
50 ... 240
4 units
50 ... 240
--
- With terminal cover
Cu or Al
mm
2
--
--
--
2 units
70 ... 300
--
--
--
--
• Finely stranded with end sleeve
mm
2
--
--
--
2 units
50 ... 95
2 units
50 ... 185
3 units
50 ... 185
4 units
50 ... 185
--
• Direct connection of busbars Cu or Al
mm 17 × 7
22 × 7
24 × 7
32 × 10 40 × 10 2 × 40 × 10 2 × 50 × 10 3 × 60 × 10
• Screw for connection with screw terminal
M6
M6
M8
M8
M6
M8
M8
--
Conductor cross-sections for control circuits with
terminal connection
Screw terminals
• Solid
mm
2
0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5 0.75 ... 1.5
• Finely stranded with end sleeve
mm
2
0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0 0.75 ... 1.0
For details see Mounting Instruction.