PV-DC-Junction box

Part Number 158109
  • Generator junction box for 1 MPP tracker / 4 strings
  • Integrated surge protection (DS50VGPVS-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
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
Metric / 18x M16 (Ø 5-7mm)
Housing material
UV and ozone resistant, fiberglass reinforced polycarbonate with semi-transparent cover
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)
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