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HAZARD Alert – S&C overhead pole-top style SMD-20 fuse mountings


December 13, 2011
By Anthony Capkun

December 13, 2011 – S&C Electric says that polymer insulator furnished on certain S&C overhead pole-top style SMD- 20 fuse mountings may fracture when the fuse is opened with an S&C Loadbuster loadbreak tool. Should this occur, the unsupported upper portion of the insulator could—depending on the utility’s construction practices—make contact with an energized conductor, resulting in electrical arcing.

Only single-insulator mountings furnished with a polymer (not a porcelain) insulator are potentially subject to this issue. They include the following catalogue numbers:

• 92123R3-PD
• 92123R3-PD-T201
• 92123R3-PM
• 92142R3-PM

S&C says all mountings manufactured in 2011 are potentially susceptible to this issue. The company says it is continuing its investigation to determine whether a larger manufacturing date range is affected. Once a date range has been identified, a second letter will be issued with its findings.

For further information, contact David Moore, customer service manager, at david.moore@sandc.com or (416) 249-9171 ext. 3314.