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Siemens IC 10 · 2017
Contactors for Special Applications
SIRIUS 3RT.4 contactors for resistive loads (AC-1), 3-pole
4
General data (continued)
Rated insulation voltage
U
i
(Pollution degree 3)
V
1 000
Rated impulse withstand voltage
U
imp
kV
6
8
Protective separation
between coil and main contacts
acc. to IEC 60947-1, Appendix N
V
400
690
Mirror contacts
acc. to IEC 60947-4-1, Appendix F
A mirror contact is an auxiliary NC contact that cannot be
closed simultaneously with an NO main contact.
• Integrated auxiliary switches
Yes
--
• Removable auxiliary switch block
--
Yes
Permissible
ambient temperature
• During operation
°C
-25 ... +60
• During storage
°C
-55 ... +80
Degree of protection
acc. to IEC 60529
• On front
IP20
IP00
(IP20 with box terminal/cover)
• Connecting terminal
IP00 (for higher degree of protection: use additional terminal covers)
Touch protection
acc. to IEC 60529
Finger-safe
for vertical touching from the
front
Finger-safe
for vertical touching from the front with cover
Shock resistance
• Rectangular pulse
-
AC operation
g
/ms
10.3/5 and 10.5/10
8.5/5 and 4.2/10
-
DC operation
g
/ms
6.7/5 and 4.0/10
8.5/5 and 4.2/10
• Sine pulse
-
AC operation
g
/ms
16.3/5 and 10.5/10
13.4/5 and 6.5/10
-
DC operation
g
/ms
10.6/5 and 6.3/10
13.4/5 and 6.5/10
Short-circuit protection
Main circuit
• Fuse links, operational class gG: LV HRC, type 3NA
-
Type of coordination "1"
A
250
355
500
800
• Fuse links, operational class gR: SITOR, type 3NE
-
Type of coordination "2"
A
250
350
500
710
Auxiliary circuit
Short-circuit test
• With fuse links of operational class gG:
DIAZED, type 5SB; NEOZED, type 5SE
with short-circuit current
I
k
= 1 kA acc. to IEC 60947-5-1
A
10
10
Short-circuit protection for contactors with overload relays
On request
See Configuration Manual "Configuring SIRIUS –
Selection Data for Fuseless Load Feeders",
Short-circuit protection for fuseless load feeders
See 3RA2 load feeders,
from page 8/4 onwards
See 3RA1 load feeders, www.siemens.com/product?3RA1
Type
3RT2446
3RT2448
3RT1456
3RT1466
3RT1476
Size
S3
S6
S10
S12
© Siemens AG 2016