PV-DC-Junction box

Part Number 157106

With the generator junction boxes of the GAK1 series, CITEL offers a solution to protect photovoltaic systems against the effects of lightning and surges. The GAK1 series is designed for the protection of 1 MPP tracker and maximum system voltages (Ucpv) up to 1200 Vdc. Depending on the configuration, the GAK1-XS are optimised for PV systems on buildings of lightning protection class III/IV with ≥ 4 down conductors in accordance with Table 2, VDE 0185-305 Supplement 5, Fpr TS 50539-12 : 2013 and ground-mounted PV systems.

SPD type
PV network 1000 Vdc
Nominal DC voltage
Un-dc 1000 Vdc
Rated insulation voltage
Ui 1000 Vdc
Rated current
InA 32 A
Rated string current
InC 16 A
See diagram
1.648 kg
Input / per MPPT
Spring clamp terminals / 4x16mm²
Output / per MPPT
Spring terminals / 2x 6-16mm²
Ground connection terminal
Screw terminal 6-35mm²
Cable gland
2x M16 (Ø 4,5-10 mm) / 2x M20 (Ø 6-13 mm) / 1x M25 (Ø 9 - 17 mm)
Housing material
UV and ozone resistant, fiberglass reinforced polycarbonate with semi-transparent cover
WxHxD (mm): 130 x 180 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)
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
Standards compliance
DIN EN 50539-11 / DIN EN IEC 61439-2