PV-DC-Junction box

Part Number 157308

With the generator junction boxes of the GAK3 series, CITEL offers a solution to protect photovoltaic systems of any kind against the effects of lightning and overvoltages. The GAK3 series is designed to protect 3 MPP trackers and maximum system voltages (Ucpv) up to 1200 Vdc. Depending on the configuration, the GAK3 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)).

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
Housing material
UV and ozone resistant, glass fibre reinforced polycarbonate
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
20x M16 (Ø 4,5-10mm)
Housing material
UV and ozone resistant, fiberglass reinforced polycarbonate with semi-transparent cover
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)
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