DEHN Generator Connection Box IP65, 2 MPPT, 2 Strings per MPPT, 1000 V DC (900976)

Handles up to 1000 V DC across 4 strings with Type 2 surge protection, making it a robust choice for photovoltaic installations.

Overview

The DEHN Generator Connection Box (model 900976) is a DC combiner box engineered for PV systems, combining two MPPT inputs with two strings each. Its IP65-rated, UV-resistant polycarbonate enclosure ensures reliable outdoor operation.

What stands out

• Supports 1000 V DC maximum system voltage
• Two MPPT inputs, each with two strings (4 strings total)
• Type 2 surge protection with 20 kA nominal discharge current (8/20 µs)
• IP65 protection against dust and water jets
• UV-resistant polycarbonate housing for long-term durability
• Wall-mountable design with screw terminals up to 16 mm²

Technical details

• Product type: DC Combiner Box / String Combiner Box
• Application: Photovoltaic (PV) systems
• Max. PV system voltage (Ucpv): 1000 V DC
• Number of MPPT inputs: 2
• Strings per MPPT: 2 (total 4 strings)
• Surge protection device (SPD) type: Type 2 (EN 50539-11)
• Nominal discharge current (In): 20 kA (8/20 µs)
• Max. discharge current (Imax): 40 kA (8/20 µs)
• Voltage protection level (Up): ≤ 4.0 kV
• Max. short-circuit current (Iscpv): 20 kA per string
• Operating temperature range: -40 °C to +60 °C
• Enclosure material: UV-resistant polycarbonate
• Mounting type: Wall mounting
• Connection terminals: Screw terminals (up to 16 mm²)
• Cable entries: M20 / M25 cable glands
• Standards compliance: EN 50539-11, IEC 61439-2

Our verdict

A reliable combiner box for PV systems up to 1000 V DC, offering robust surge protection and a weatherproof enclosure for outdoor use.