A surge protection device is a device that prevents the transmission of lightning to electrical equipment. The task of this device is to limit and minimize the influence of lightning on surrounding electrical equipment along power lines, signal lines, and metal wires.

STP T12 12.5 is the series of combined Type 1+2/Class I+II devices for discharging lightning currents and protecting against voltage surges, in accordance with IEC/EN 61643-11. Suitable as the first step of protection in incoming power supply panels and areas with exposure to the atmosphere, where installations are usually provided with an external lightning protection system.

Download: Catalogue

RATINGS AND FEATURES

Lightning impulse current (10/350μs): 12.5kA per phase
Maximum discharge current (8/20μs): 50kA per phase
Nominal discharge current (8/20μs): 20kA per phase
TNS, TNC, TT and IT networks
Un(L-N/L-L): 60V, 120/208V, 230/400V, 277/480V and 400/690V
DIN-rail mountable, plug-in format
Visual and remote end of life indicators
Reversible chassis to allow cable entry from above or below
Mechanically coded cartridges to avoid cartridge replacement errors
Standards: IEC 61643-11, EN 61643-11

CATALOGUE NUMBERS

STPT12-12K275V-1P – 83120102	STPT12-12K320V-1P – 83120104	STPT12-12K440V-1P – 83120106
STPT12-12K275V-1PM – 83120103	STPT12-12K320V-1PM – 83120105	STPT12-12K440V-1PM – 83120107
STPT12-12K275V-2P – 83120120	STPT12-12K320V-2P – 83120122	STPT12-12K440V-2P – 83120124
STPT12-12K275V-2PG – 83120114	STPT12-12K320V-2PG – 83120116	STPT12-12K440V-2PM – 83120125
STPT12-12K275V-2PGM – 83120115	STPT12-12K320V-2PGM – 83120117	STPT12-12K440V-3P – 83120134
STPT12-12K275V-2PM – 83120121	STPT12-12K320V-2PM – 83120123	STPT12-12K440V-3PM – 83120135
STPT12-12K275V-3P – 83120130	STPT12-12K320V-3P – 83120132	STPT12-12K440V-4P – 83120148
STPT12-12K275V-3PM – 83120131	STPT12-12K320V-3PM – 83120133	STPT12-12K440V-4PM – 83120149
STPT12-12K275V-4P – 83120144	STPT12-12K320V-4P – 83120146	STPT12-12K75V-2P – 83120126
STPT12-12K275V-4PG – 83120138	STPT12-12K320V-4PG – 83120140	STPT12-12K75V-2PM – 83120127
STPT12-12K275V-4PGM – 83120139	STPT12-12K320V-4PGM – 83120141	STPT12-25K-N – 83120108
STPT12-12K275V-4PM – 83120145	STPT12-12K320V-4PM – 83120147	STPT12-50K-N – 83120110