Surge Protector Brochure, 4-22-2020

Application Locations According to IEEE and UL
IEEE Location Category Category C Category B Category A
Definition Designed for use in incoming power
supply panels where the risk of
lightning strike Is high
Designed for use in distribution
panels located downstream of
location Category C or in areas with
low exposure to lightning strikes
Always installed > 20m downstream
of Category B protection systems
designed to protect sensitive
equipment
Applications Outside overhead lines and service
entrance
Feeders, short branch circuits, and
indoor service panels
Outlets/receptacles, long branch
circuits
ANSI/UL 1449 Type Designations Type 1 Type 2 Type 3
Mersen Surge-Trap® series
STZ
STX
ST and STP
STLB