Installation
14 3ZX1012-0RB22-1AA1
English
Ground fault The relay can optionally be configured for internal ground fault
detection by the 3RB2985-2..1 function expansion module for use
with motors with a 3-wire connection (without neutral connection).
2 Installation
For the dimension drawing, see graphic section Fig. I
Mounting position: any
Mounting:
7 Snap-on mounting to 35 mm standard mounting rail acc. to
EN 50 022 (Fig. II), or to 3RB2906.. current measurement
module or
7 Screw mounting with push-in lugs as accessory (3RP1903,
Fig. III).
3 Connection
The motor current is measured with the
3RB29.. current measurement
module. The connection of the motor lines is described in the
operating manual
3ZX1012-0RB00-1AA1.
The electronic overload
relay is connected with the current measurement module using a
ribbon cable (3RB2987-.) (
Fig. VII).
Conductor cross-sections and torques in table in
Fig. II.
3.1 Connection diagram
Device circuit diagram (example: Contactor with latching) see
graphic section (
Fig. VII).
For main current connection for single-phase operation, see
Fig.
VI. No function expansion modules with ground fault detection
can be used here.
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