Description
2.3 Technical details
3VA molded case circuit breakers with UL and IEC certification
42
Manual, 01/2019, L1V30435333-01
HACR type information
HACR stands for heating, air conditioning and refrigeration. The information on the circuit
breaker states that the protective device may be used for overcurrent protection of
corresponding systems.
HACR applications are a known example of installations with motor groups. Many modern
heating systems operate with fans for exhaust air from combustion systems, exhaust control
and ventilation systems for hot air. Air conditioning systems and refrigerators use
compressors for coolant and fans for ventilation systems with cold air.
The HACR mark on molded case circuit breakers certified according to UL 489 is actually no
longer required. Based on changes in the National Electrical Code® (NEC®) and in UL 489,
all UL 489 certified switching devices today are automatically HACR certified and may bear
the HACR mark.
Key electrical data IEC
The key electrical data for the IEC market on the right side of the molded case circuit breaker
(when viewed from above) contains the following information:
①
CE, CCC, EAC, etc. approval marks, if valid for this circuit breaker
②
IEC breaking capacity values at various voltages
③
Frequency, utilization category
④
Insulation data
⑤
Standards data according to IEC and SAC (Standardization Administration of the Peoples
Republic of China)
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