PV-DC-Junction box

GAK2.K4(6)x16.K2x16.51VG-1
Part Number: 158207
GAK2.K4(6)x16.K2x16.51VG-1

Generator junction box for 2 MPP tracker / 4 strings Integrated surge protection device (2x DS50VGPVS-1000G/51) Protection class IP65 Connection via spring terminals


With the generator junction boxes of the GAK2 series, CITEL offers a solution to protect photovoltaic systems of any kind against the effects of lightning and overvoltages. The GAK2 series is designed to protect 2 MPP trackers and maximum system voltages (Ucpv) up to 1200 Vdc. Depending on the configuration, the GAK2 meet the normative requirements for all types of buildings with or without external lightning protection system up to lightning protection class I (Iimp = 12.5 kA / pole (10/350)) and are also available in versions with string fuses and disconnectors.


SPD type 2
Network PV network 1000 Vdc
Nominal DC voltage Un-dc 1000 Vdc
Max. PV operating voltage Ucpv 1200 Vdc
Rated insulation voltage Ui 1000 Vdc
Rated current InA 2x 60 A
Rated string current InC 2x 40 A
Input / per MPPT Spring clamp terminals / 4x16mm²
Output / per MPPT Spring terminals / 2x16mm²
Ground connection terminal Spring clamp terminals / 16mm²
Cable gland Metric / 30x M16 (Ø 5-7mm)
Housing material UV and ozone resistant, fiberglass reinforced polycarbonate with semi-transparent cover
Dimensions WxHxD (mm): 360 x 254 x 111
Ambient temperatures Indoor: -5°C to max. +40°C (+35°C 24h average) / Outdoor: -25°C to max. +40°C (+35°C 24h average)
Humidity Indoor: max. 50% at +40°C, max. 90% at 20°C (non-condensing) / Outdoor: 95% for a short time at +25°C (non-condensing)
Protection rating IP 65
Protection class Class II
Impact resistance IK 8
Pressure compensation element Existing
Standards compliance DIN EN 50539-11