Mechanical Latch; Description; Mounting/Disassembly - Siemens SIRIUS 3RT Series System Manual

2.7.6

Mechanical latch

2.7.6.1

Description

The mechanical latch for the 3RT2.2 power contactors ensures that the contactor remains
switched on even if there is a voltage failure. The release coil has an ON period of 100%.
Table 2- 38
Design of the mechanical latch
24 V AC/DC
110 V AC/DC
230 V AC/DC
2.7.6.2

Mounting/Disassembly

Table 2- 39
Step
1 / 2
3
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
Versions of the mechanical latch
Mounting the mechanical latch
Operating instruction
When snapping on, the switch position
indicator's rod must be unlocked. Unlock
the rod by pressing on the switch position
indicator and pushing the rod into the
mechanical latch as far as it will go.
Snap the mechanical latch onto the center
of the contactor until it engages.
SIRIUS 3RT2 contactors/contactor assemblies
Order number
3RT2926-3AB31
3RT2926-3AF31
3RT2926-3AP31
Image
2.7 Accessories
185