PV-DC-Junction box

GAK1.K6x16.K2x16.51-12
Part Number: 158110
  • Generator junction box for 1 MPP tracker / 4 strings
  • Integrated surge protection (DS50PVS-1000G/12KT1)
  • Protection class IP65
  • Connection via spring-terminals

With the generator junction boxes of the GAK1 series, CITEL offers a solution to protect all kinds of photo-voltaic systems against the effects of lightning and overvoltage. The GAK1 series is designed to protect 1 MPP tracker and maximum system voltages (Ucpv) up to 1200 Vdc. Depending on the configuration, the GAK1 meets 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 1+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 60 A
Rated string current InC 40 A
Input / per MPPT Spring clamp terminals / 4x 6-16mm²
Output / per MPPT Spring terminals / 2x 6-16mm²
Ground connection terminal Spring clamp terminals / 6-16mm²
Cable gland 4x M32 with multiple feed-through (16x Ø 5-7mm); 1x M20 (Ø 6-13mm)
Housing material UV and ozone resistant, fiberglass reinforced polycarbonate with semi-transparent cover
Dimensions WxHxD (mm): 254 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)
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