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AC Line Surge Protectors

Type 1 surge protection devices are combined lightning current and surge arresters that are used in unmetered areas. They are meant to protect against the effects of direct lightning strikes and must satisfy very stringent requirements. In order to meet these requirements, spark gap technology is required. A spark gap will break down during an abnormal voltage surge, safely shunting the surge to ground.

Type 2 surge protection devices with a low discharge capacity are installed in the metered area. They are generally installed in machine control cabinets or sub-distributions. They do not have to handle direct lightning strikes, but they must be able to discharge over-voltages from indirect lightning strikes or switching operations. Varistor technology is proven itself here.  At low voltage, the varistor has a high electrical resistance which decreases as the voltage increases. When an over-voltage occurs, the varistor’s resistance drops, allowing the extra current to flow through the varistor and safely to ground.

Type 3 surge protection devices with the lowest discharge capacity are installed as close as possible to the end device. The devices have a wide range of designs to suit the various different installation environments. Type 3 surge protection is similar to type two, which is based on varistors, but the requirements concerning discharge capacity are lower compared to type 2.

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Transtector RRPA-120THC AC Surge Protector - 240 VAC
Transtector RRPA-120THC AC Surge Protector - 240 VAC
$1149.54 $1428.00
Transtector RRPA-120THC - AC Surge Protector SPD RRPA DIN-Rail Assy 120/240 Vac Split-Phase 210 A SASD, MOV 30 kA, UL 1449 4th Ed.
Transtector IMAX-120S-SR - APEX IMAX 120V SASD REPLACEMENT MODULE
Transtector IMAX-120S-SR - APEX IMAX 120V SASD REPLACEMENT MODULE
$690.69 $858.00
Transtector IMAX-120S-SR - AC Surge Protector SPD APEX IMAX Module 120 Vac SASD 20 kA
Transtector IMAX-120S-MR - APEX IMAX 120V MOV REPLACEMENT MODULE
Transtector IMAX-120S-MR - APEX IMAX 120V MOV REPLACEMENT MODULE
$399.91 $496.79
Transtector IMAX-120S-MR - AC Surge Protector SPD APEX IMAX Module 120 Vac MOV 160 kA
Transtector I2R-T240-G - AC Surge Protector SPD I2R-T240 DIN-Rail Common Mode GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-G - AC Surge Protector SPD I2R-T240 DIN-Rail Common Mode GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
$39.01 $48.47
Transtector I2R-T240-G - AC Surge Protector SPD I2R-T240 DIN-Rail Common Mode GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4PG277 AC Surge Protector - 277 VAC
Transtector I2R-T240-4PG277 AC Surge Protector - 277 VAC
$117.84 $146.39
Transtector I2R-T240-4PG277 - AC Surge Protector SPD I2R-T240 DIN-Rail 277 Vac 3-Phase Wye + CM MOV, GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4PG230 AC Surge Protector - 230 VAC
Transtector I2R-T240-4PG230 AC Surge Protector - 230 VAC
$70.60 $87.70
Transtector I2R-T240-4PG230 - AC Surge Protector SPD I2R-T240 DIN-Rail 230 Vac 3-Phase Wye + CM MOV, GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4PG120 AC Surge Protector - 120 VAC
Transtector I2R-T240-4PG120 AC Surge Protector - 120 VAC
$74.53 $92.58
Transtector I2R-T240-4PG120 - AC Surge Protector SPD I2R-T240 DIN-Rail 120 Vac 3-Phase Wye + CM MOV, GDT 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4P277 AC Surge Protector - 277 VAC
Transtector I2R-T240-4P277 AC Surge Protector - 277 VAC
$197.05 $244.79
Transtector I2R-T240-4P277 - AC Surge Protector SPD I2R-T240 DIN-Rail 277 Vac 3-Phase Wye MOV 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4P230 AC Surge Protector - 230 VAC
Transtector I2R-T240-4P230 AC Surge Protector - 230 VAC
$239.55 $297.59
Transtector I2R-T240-4P230 - AC Surge Protector SPD I2R-T240 DIN-Rail 230 Vac 3-Phase Wye MOV 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-4P120 AC Surge Protector - 120 VAC
Transtector I2R-T240-4P120 AC Surge Protector - 120 VAC
$73.79 $91.66
Transtector I2R-T240-4P120 - AC Surge Protector SPD I2R-T240 DIN-Rail 120 Vac 3-Phase Wye MOV 40 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-3P690 AC Surge Protector - 690 VAC
Transtector I2R-T240-3P690 AC Surge Protector - 690 VAC
$150.68 $187.19
Transtector I2R-T240-3P690 - AC Surge Protector SPD I2R-T240 DIN-Rail 690 Vac 3-Phase Wye MOV 30 kA, IEC 61643-11 Class II, CE, RoHS
Transtector I2R-T240-3P480 AC Surge Protector - 480 VAC
Transtector I2R-T240-3P480 AC Surge Protector - 480 VAC
$214.44 $266.39
Transtector I2R-T240-3P480 - AC Surge Protector SPD I2R-T240 DIN-Rail 480 Vac 3-Phase Wye MOV 40 kA, IEC 61643-11 Class II, CE, RoHS