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GAMMA instabus
Technical product information
July 2008
Switching actuator, submodule N 512/21
3x AC 230/400V, 16A, C-load, load-check
Connection example
Schaltaktor, Hauptmodul
Switching actuator, main module
N 512/11
Ausgang 1
Output 1
Ausgang 2
Output 2
Ausgang 3
Output 3
A
6
Schaltaktor, Erweiterung
Switching actuator, submodule
N 512/21
Ausgang 1
Output 1
Ausgang 2
Output 2
Ausgang 3
Output 3
B
C ... E
Figure 1. Connection example
Installation notes
• The device can be used for permanent installation in
dry interior rooms and for insertion in distribution
boards or miniature housings.
V
DANGER
• The device must be mounted and commissioned by an
authorised electrician.
• When connecting the device, it should be ensured that
the device can be isolated.
• The device must not be opened.
• For planning and construction of electric installations,
the relevant guidelines, regulations and standards of
the respective country are to be considered.
• With the last submodule no bridging connector must
be plugged into the jack for a further submodule on
the right submodule side.
Technical manual
Update: http://www.siemens.com/gamma
2.4.3.3/2
L3
L2
N
L1
L1
1
L2
2
L3
3
L1
1
L2
2
L3
3
N 512/21, 4 pages
© Siemens AG 2008
Subject to change without further notice
Technical data
Power supply
• Bus voltage: via the 6-pole bridging connector
• Bus current per submodule: typically 1 mA
• Power dissipation: if all outputs = OFF: 0.03 W,
at max. load and all outputs = ON: approx. 3.5 W
Outputs
• 3 switching outputs, potential-free relay contacts:
- rated voltage: AC 230/400 V, 50/60 Hz
- rated current: 16 AX (200 µF) to DIN EN 60669-1,
16 A in AC1 mode (cos ϕ = 0.8) and in AC3 mode
(cos ϕ = 0.45) as to DIN EN 60947-4-1,
- DC switching capacity: 16A at 24V DC
- Min. switching capacity: 100 mA at 12V AC
- Incandescent lamp load: max. 3,680 W
- LV halogen lamps, inductive transformer: 2,000 W
- LV halogen lamps, electronic transformer: 2,500 W
- Number of OSRAM ballasts for T5/T8:
QTI 1x28/54W: 56, QTP 1x36W: 31,
QT-M 1x26-42W:21, QTP 2x58W: 9,
QT-FQ 1x80W: 9
- Mech. lifetime: > 1,000,000 switching cycles
- Electr. lifetime: > 100,000 at AC1, > 30,000 at AC3
- Load current measuring range: 0.1...20 A, sinusoidal
- Load current frequency range: 50/60 Hz, +/- 5 Hz,
- Measuring accuracy: +/- 9 % of the current measured
value and +/- 130 mA,
- Max. relay position changes per output and evenly
distributed per minute with simultaneous switching of
all relays: 20 with 3 outputs, 10 with 6 outputs, 7 with
9 outputs, 5 with 12 outputs, 4 with 15 outputs
Operating elements
• none
Display elements
• none
Connections
• Output circuits: screw-type terminals,
insulation strip length 7... 9 mm.
The following conductor cross-sections are permitted:
- 0.5... 4.0 mm² single-core,
- 0.5... 2.5 mm² finely stranded without / with connec-
tor sleeve.
• Each L-conductor connection to the N 512/11 must be
fused with a circuit-breaker of characteristic B or C for
a max. nominal current of 16 A!
• Submodule: 6-pole jack for bridging connector.
P.O. Box 10 09 53, D-93009 Regensburg
5WG1 512-1AB21
Siemens AG
Industry Sector, Building Technologies
Electrical Installation Technology
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