Cabinet Modules
5.1 Line Connection Modules
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
135
Main switch (input current ≤ 800 A)
Up to 800 A, a main switch is installed.
X50 "main switch" checkback contact
Table 5- 2 Terminal block X50 "main switch" checkback contact
"Main switch checkback contacts
Max. load current: 3 A
Max. switching voltage: 250 V AC
2 NC
Max. connectable cross-section #14 AWG (2.5 mm²)
1)
NC: normally-closed contact, NO: normally-open contact, COM: mid-position contact
Circuit breaker (input current > 800 A)
At currents greater than 800 A, the circuit breaker, which is located in the center of the
cabinet, takes on the function of isolating the system from the supply and the overload and
short-circuit protection. The circuit breaker is internally activated and has its own internal
power supply.
The tripping current on the line-side must be set according to the conditions of the system.
The tripping current is set as follows in the default factory setting:
Table 5- 3 Factory setting of the overcurrent release on Line Connection Modules for Basic Line Modules
Order number
Line Connection
Module
Order number
Basic Line Module
Input current
Line Module
Short-time de-
layed short-
circuit release
(S)
Delay time short-
circuit release
(t
sd
)
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