3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
9
About this documentation
3VA molded case circuit breakers with certification according to standard IEC 60947
The 3VA molded case circuit breakers from the portfolio of SENTRON protection, switching,
measuring and monitoring devices ensure the reliable protection of people and property as
integral components of efficient power distribution systems.
The product portfolio is designed for use in markets where low-voltage switchboards are
installed according to IEC standards. The 3VA molded case circuit breakers are certified
according to IEC 60947 and are suitable for the following applications:
● Incoming and outgoing circuit breakers in distribution systems
● Switching and protection devices for motors (motor protection in combination with a
contactor and motor protection relay)
● Switch disconnectors
The 3VA molded case circuit breakers are available in the following versions:
● For line protection: The overload and short-circuit releases are designed for the protection
of wiring and non-motor loads.
● For generator protection
● For the protection of three-phase squirrel-cage motors
● For the protection of starter combinations comprising molded case circuit breaker,
contactor and overload relay: In this case, the 3VA molded case circuit breaker provides
the short-circuit protection and the disconnector functionality.
● As a switch disconnector in compliance with IEC 60947-3: These molded case circuit
breakers can be used as main switches for opening and closing or for disconnecting load
switches. They are not equipped with overload and short-circuit protection.
Scope of validity of this document
This manual has been specially compiled for the 3VA molded case circuit breakers certified
to IEC 60947 and their accessory products. This manual serves as a reference manual for
technical information regarding the configuration, commissioning and operation of
3VA molded case circuit breakers and their accessories.
Refer to the manual "3VA molded case circuit breakers with UL and IEC certification" (see
chapter Reference documents (Page 10)) for 3VA UL molded case circuit breakers certified
to UL 489.
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