Ul 489 Standard. When to use ul 489 when to use ul 1077. Standards ul 489 csa c22 2 no.
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Ul 1077 3 8 inch through the air 1 2 inch over surface. Definitions from the standard ul 489 mccb on photo abb molded case circuit breakers tmax series by galco. 5 en iec 60947 2 certifications ul listed circuit breaker file number e197878 csa certified vde certified ce marked hacr rating usa canada yes swd rating usa canada yes 0 5 20 a calibration temperature ul csa.
Comparing the requirements and test parameters of ul 489 the standard for molded case circuit breakers and ul 1077 the standard for supplementary protectors for use in electrical equipment.
However ul 1077 devices are only acceptable for providing supplementary protection where there is branch circuit protection ahead of it. The requirements of this standard cover molded case circuit breakers mccb circuit breaker and ground fault circuit interrupters fused circuit breakers and accessory high fault protectors. Ul 489 january 15 2013. 15 000 a ul csa see below.
