| 摘要 |
A molded case circuit breaker having a trip unit (100) with one or more integrally formed dielectric protrusions (102) that are configured to slidably interconnect with corresponding dielectric members (202) of the base (200) when the trip unit (100) is secured to the base (200). The dielectric protrusions (102) extend from dielectric walls (122) located between adjacent enclosure chambers (109) that house the current transformers (114) and are configured to remain in contact with the dielectric members (202) of the base (200) as the trip unit (100) is being moved with respect with the base (200). By remaining in contact to one another while the trip unit (100) is moved with respect to the base (200), the dielectric protrusions (102), along with the dielectric members (202), maintain a strong dielectric barrier within the exterior spaces (112) between the current transformer (114) enclosure chambers (109), thereby preventing debris from traveling between and accumulating on the trip unit (100) and the base (200). |
