Design; Circuit Breakers - Siemens SENTRON 3WA Air Manual

2.2.2

Design

2.2.2.1

Circuit breakers

(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
3WA Air Circuit Breakers
Equipment Manual, 05/2021, 92310000002-03
Arc chute
Carrying handle
Labeling plate
Motor disconnect switch (option) or
local electric close (S10) (option)
Circuit breaker rating label
Spring charge indicator
Local mechanical close
Max. rated circuit breaker current
Charging handle
Operating cycles counter (option)
Racking handle
Ground connection
Retractable shaft (only withdrawable
version)
Accessory label
Position indicator
2.2 Circuit breakers and non-automatic circuit breakers
(16) Locking provision for racking handle
(option)
(17) Label
(18) Voltage tap module VTM (optional)
(19) Mechanical unlatching of the racking
handle
(20) Query button
(21) Electronic trip unit ETU
(22) Operating keys ETU600
(23) Mechanical OPEN button or Emergency
OPEN button (mushroom pushbutton, option)
(24) Switch position indicator
(25) Trip indicator ETU TRIP (reset button)
(26) Trip indicator EXT TRIP (reset button),
optional
(27) Ready-to-close indicator
(28) Operator panel
(29) Locking provision Safe Open (option)
(30) Base part for secondary disconnect
terminal
Description
27