7.3.3 Connection
R
equirements
WARNING
Dangerous electrical voltage!
When electrical devices are operated, parts of these devices will necessarily carry dangerous
voltages. Failure to observe the operating instructions can therefore lead to serious injuries or
material damage.
• Observe the operating instructions.
• Switch o all current sources and provide them with a switch-on guard before performing
any work on the device.
• Adhere to national regulations.
WARNING
Installation and maintenance work
Installation and maintenance work may only be performed by qualied personnel.
• If
the SIDOOR TRANSFORMER UL is supplied by two ungrounded wires (for example L1, L2),
fusing has to be implemented by a 2-pole miniature circuit breaker with coupled switching
element. When there is a connection between an ungrounded wire (L) and a grounded wire
(N), only a 1-pole miniature circuit breaker in the L-branch is required.
• Make sure that the on-site (customer-provided) fuse meets these requirements:
– For the CE setting with a miniature circuit breaker to IEC60898-1, 10 A tripping
characteristic C or 6 A tripping characteristic D
for example 1-pole miniature circuit breaker: 5SY4110-7 or 5SY4106-8
e.g. 2-pole miniature circuit breakers: 5SY4210-7 or 5SY4206-8
– For the NFPA setting miniature circuit breaker to UL489 listed, CCN DIVQ, UR≥240VAC,
10 A Class C or 6 A Class D
e.g. 1-pole miniature circuit breaker: 5SJ4110-7HG41 or 5SJ4106-8HG41
e.g. 2-pole miniature circuit breakers: 5SJ4210-7HG41 or 5SJ4206-8HG41
Power supply
7.3 SIDOOR TRANSFORMER UL
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA 253
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