Siemens LMV37.4 Series - Electrical Connection of the LMV37.4

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Building Technologies Basic documentation LMV37.4... CC1P7546en
1 Safety notes 17.12.2018
1.4 Electrical connection of the LMV37.4
The LMV37.4 operates with the following low-voltages:
 SELV (Safety Extra Low-Voltage) and PELV (Protective Extra Low-Voltage) ensure
protection against electric shock hazard
 FELV (Functional Extra Low-Voltage) without safe separation offers no protection
which, in the event of fault, would not exclude risks
Mains voltage
SELV PELV FELV
Mains voltage
Figure 2: Electrical connection

Note
SELV or PELV depends on the safety class of the connected components. In the case
of PELV, the relevant component is connected to protective earth.