PV-DC-Junction box

Part Number 156952
  • Junction box for 1 MPP-Tracker / 1 String
  • Surge protection integrated
  • Protection rating IP65
  • Connection cables pre-assembled with MC4 connectors

With the new CiPlug string box, CITEL is providing a solution to protect the DC side of small and medium-sized Photovoltaic (PV) systems against the effects of surges and overvoltages. With its small dimensions, the CiPlug is ideal for rooftop installations in the residential building sector. The CiPlug includes pre-assembled pv-cables equipped with MC4 plugs, which enables a very fast and easy installation. With its maximum system voltage (Ucpv) of 1200 Vdc, it is applicable for any common configuration and reliably protects the MPP tracker of the inverter. Depending on the configuration, the CiPlug 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
Rated insulation voltage
Ui 1000 Vdc
Rated current
InA 20 A
Rated string current
InC 20 A
Housing material
UV and ozone resistant, glass fibre reinforced polycarbonate
See diagram
Input / per MPPT
MC4 plug 1x 6mm² with 15cm connection cable
Output / per MPPT
MC4-Stecker 1x 6mm² mit 120cm Anschlussleitung
Ground connection terminal
Screw terminal 2.5-25mm² (35mm²)
Cable gland
Metric / 1x M24 (Ø 6-12mm) PE
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