Siemens SENTRON 3VA27 - Page 91

Front terminals for main circuit connection
The front terminals, which are standard equipment, are nut keeper kits (clip-in nut-insulator
assembly and clamping screw). They 󹪝t entirely into the terminal area of the circuit breaker and
do not protrude beyond the circuit breaker contour.
Front connection bars, extended
The front connection bars, extended permit variable and 󹪞exible connection of connection bars
and cable lugs. They are mounted on the front terminals and are used to extend the jumper lug
of the circuit breaker. The extended connections protrude from the circuit breaker and are not
delivered preassembled on the circuit breaker.
Circular conductor terminal for Cu/Al cable
The CuAl cable terminals are mounted on the front terminals. They project beyond the circuit
breaker contour.
A total of up to four cables with a maximum cross-section of 240mm
2
can be connected to
the CuAl cable terminal.
Rated current Number and cross-section
400 A 2 x 150 mm
2
630 A 3 x 240 mm
2
800 A 3 x 240 mm
2
1000 A 4 x 240 mm
2
Circular conductor terminals cannot be used for Cu/Al cables at rated currents greater than
1000A.
Horizontally / vertically orientable rear connections
The rear connection with variable orientation permits connection of connection bars and cable
lugs to the rear of the circuit breaker. It can be mounted both horizontally and vertically or
subsequently turned horizontally / vertically by the user.
Front connection bars, broadened
The front connection bars, broadened permit connection of broadened busbars and up to four
cable lugs per phase and thus provide additional 󹪞exibility. The broadened connections protrude
from the circuit breaker and are not delivered preassembled on the circuit breaker.
Accessories
3.1Accessories for connection and insulation
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
90 Equipment Manual, 10/2023, L1V30499596002-03