Siemens SCALANCE X-200 Operating Instructions Manual page 136

Connection
5.1 Power supply
Note
The current through the power push-pull connector must not exceed a maximum of 16 A.
You should therefore include a fuse that trips at a current higher than 16 A.
The fuse must meet the following requirements:
In areas subject to the NEC or CEC:
 Suitable for DC (min 60 V / max 16 A)
 Breaking current at least 10kA
 UL / CSA listed (UL 248-1 / CSA 22.2 No. 248.1)
 Classes R, J, L, T or CC.
Otherwise:
 Suitable for DC (min 60 V / max 16 A)
 Breaking current at least 10 kA
 Approved in compliance with IEC 60127-1 / EN 60127-1
 Breaking characteristics: B or C for circuit breakers or slow-blow fuses.
Note
Removing or inserting the push pull power connector with power on is not permitted.
Note
Notes on operating under marginal conditions
If the power supply is looped through, the limit values must be taken into account.
The maximum permitted current depending on the ambient temperature:
If the power is looped through by the push-pull power connectors under the marginal
conditions described (see the table "Operation under marginal conditions"), the device may
only be used when installed as shown in the following figure: "Mounting position for
operation under marginal conditions".
If no power is looped through, any installation position is permitted.
136
Operating Instructions, 12/2011, A5E00349864-19
SCALANCE X-200