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Circuit Breaker

IK Rating:
Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts in accordance with
IEC 62262:2002 and IEC 60068275:1997.
IK01

Protected against 0.14 joules impact.
Equivalent to impact of 0.25kg mass dropped from 56mm above impacted surface. 
IK02

Protected against 0.2 joules impact.
Equivalent to impact of 0.25kg mass dropped from 80mm above impacted surface. 
IK03

Protected against 0.35 joules impact.
Equivalent to impact of 0.25kg mass dropped from 140mm above impacted surface. 
IK04

Protected against 0.5 joules impact.
Equivalent to impact of 0.25kg mass dropped from 200mm above impacted surface. 
IK05

Protected against 0.7 joules impact.
Equivalent to impact of 0.25kg mass dropped from 280mm above impacted surface. 
IK06

Protected against 1 joules impact.
Equivalent to impact of 0.25kg mass dropped from 400mm above impacted surface. 
IK07

Protected against 2 joules impact.
Equivalent to impact of 0.5kg mass dropped from 400mm above impacted surface. 
IK08

Protected against 5 joules impact.
Equivalent to impact of 1.7kg mass dropped from 300mm above impacted surface. 
IK09

Protected against 10 joules impact.
Equivalent to impact of 5kg mass dropped from 200mm above impacted surface. 
IK10

Protected against 20 joules impact.
Equivalent to impact of 5kg mass dropped from 400mm above impacted surface. 
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