Description
2.4 Standards and guidelines
3VA molded case circuit breakers with UL and IEC certification
50 Manual, 01/2019, L1V30435333-01
This chapter provides you with an overview of the standards and guidelines that are met with
the 3VA UL molded case circuit breakers
The topics discussed in this chapter are listed below:
● Compliance with standards
● Electromagnetic compatibility
● Ambient conditions
● Degrees of protection
Compliance with standards and electromagnetic compatibility
The 3VA UL molded case circuit breakers meet the requirements of the following standards:
● UL 489
● UL 1053
● IEC / EN 60947-1
● IEC / EN 60947-2
● IEC / EN 60947-6-1
● CISPR11, Class A and Class B
The 3VA UL molded case circuit breakers are adequately protected against the following
factors:
● Electrostatic charge
● Electrostatic discharge
● Electromagnetic waves, e.g. from transmission systems, mobile phones, radio telephone
sets, radar systems, frequency converters, etc.
● Overvoltages, e.g. caused by lightning
● Voltage surges
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