3RT, 3RH, 3TB, 3TC, 3TH, 3TK Contactors for Special Applications
Contactors with Extended Tolerance 0.7 ... 1.25 x U
s
, for Railway Applications
3RH11 contactor relays
■
Overview
DC operation
IEC 60947-4-1, EN 60947-4-1 (VDE 0660, Part 102), for
requirements according to IEC 60077-1 and IEC 60077-2.
The contactor relays are finger-safe according to EN 50274. The
size S00 contactor relays have Cage Clamp connections for all
terminals.
Ambient temperature
The permissible ambient temperature for operation of the
contactor relays (across the full coil operating range) is
-40 °C to +70 °C.
Uninterrupted duty at temperatures > +55 °C reduces the
mechanical endurance, the current-carrying capacity of the
conducting paths and the operating frequency.
3RH11..-0LA0
The DC solenoid systems of the contactor relays are modified
(to hold-in coil) by means of a series resistor.
The size S00 contactor relays are supplied prewired with a plug-
on module containing the series resistor. The varistor is
integrated. A 4-pole auxiliary switch block (according to
EN 50005) can be fitted additionally.
Mounting
At ambient temperatures up to 70 °C, the size S00 contactor
relays are allowed to be mounted side by side.
3RH1122-2K.40
These contactor relays have an extended tolerance from 0.7 to
1.25 x
U
s
; the coils are fitted with varistors as standard.
An additional series resistor is not required. Please note:
• Size S00: It is not possible to mount an auxiliary switch block.
At ambient temperatures > 60 °C
70 °C, a clearance of 10 mm
is required when they are mounted side by side.
■
Application
For operation in installations which are subject both to
considerable variations in the control voltage and to high
ambient temperatures, e.g. railway applications under extreme
climatic conditions, rolling mills, etc.
Control and auxiliary circuits
The coils of the contactor relays have an extended tolerance
from 0.7 to 1.25 x
U
s
and are fitted as standard with varistors to
provide protection against voltage surges. The opening delay is
consequently 2 to 5 ms longer than for standard contactors.
■
Selection and ordering data
DC operation · DC solenoid system
Cage Clamp terminals
For screw and snap-on mounting onto standard mounting rail
Solenoid fitted with varistor
3RH11 22-2K.40:
Rated operational current
I
e
/AC-15/AC-14
T
u
: 70 °C at
230 V
A
400 V
A
500 V
A
3RH11 22-2K.40-0LA0
Contacts
Rated control supply
voltage
U
s
DT
Cage Clamp terminals
PU
PS*
(UNIT,
SET, M)
Price
per PU
kg
PG
Weight
per PU
approx.
Version
690 V
A
NO
NC
V DC
Order No.
3RH11 contactor relays
Size S00
Cage Clamp terminals for all connections
6
3
2
1
2
6
3
2
1
2
2
1)
1
3)
24
2)
110
2)
24
110
}
A
A
A
3RH11 22-2KB40
3RH11 22-2KF40
3RH11 22-2KB40-0LA0
3RH11 22-2KF40-0LA0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.255
0.256
0.284
0.285
1) It is not possible to mount an auxiliary switch block. A clearance of 10 mm
is required for side-by-side mounting at ambient temperatures > 60 °C.
2) Version without series resistor.
3) One 4-pole auxiliary switch block according to EN 50005 can be
mounted; no clearance required up to 70 °C.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2006
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SIEMENS [ Siemens Semiconductor Group ]
