Connection And Commissioning; Safety Regulations And Information - Siemens SENTRON 3WL10 Manual

Connection and commissioning

5.1

Safety regulations and information

Hazardous voltage
• Disconnect the power supply from the circuit breaker (circuit and auxiliary circuits).
• Make sure that the circuit breaker is disconnected from all power sources.
• Switch the circuit breaker to the OPEN position and discharge the spring energy store.
• Also note the relevant notes in Chapter Safety instructions (Page 11).
NOTICE
Damage due to setting down on the rear face.
Circuit breakers and guide frames must not be set down on their rear face.
After unpacking, stand the circuit breaker / guide frame upright on its underside.
Note
• Clean the main conductor terminals.
• Clean busbars, stripped cable ends, and cable lugs.
• The contacts of the busbars, cable lugs, or cables must be free of burr, dents, signs of
rust, dust, or grease.
• Aluminum busbars must be tin-plated in the contact zones.
• The busbars or cables must not exert forces on the terminals in any direction.
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
DANGER
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