DEHN Generator Connection Box IP65 1 MPPT and 2 Strings up to 1000V DC (900975,0)

In solar installations where a generator connection box must combine two strings into one MPPT input while providing surge protection, this DEHN unit is installed on a wall near the inverter. It is used by PV system integrators and electricians who need a compact, weatherproof enclosure for DC-side protection.

Key specifications

• Product type: PV combiner box with surge protection
• Number of MPPT inputs: 1
• Number of strings: 2
• Max. continuous operating voltage (Ucpv): 1000 V DC
• 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
• Short-circuit current rating (Iscpv): 1000 A DC
• Enclosure protection rating: IP65
• Enclosure material: UV-resistant polycarbonate
• Connection type: screw terminals
• Max. conductor cross-section: 16 mm²
• Operating temperature range: -25 °C to +60 °C
• Mounting type: wall mounting
• Integrated disconnector: yes (SCI technology)
• Status indication: visual (green/red)

Why choose it

The IP65 polycarbonate enclosure withstands outdoor conditions, and the integrated Type 2 surge protection safeguards the inverter from transient overvoltages. The built-in disconnector allows safe isolation during maintenance.

Ideal use cases

• Combining two PV strings into one MPPT input in residential or commercial systems
• Protecting the DC side of a 1000 V inverter from lightning-induced surges
• Wall-mounted outdoor installations requiring a durable, UV-resistant box

Good to know

The unit is designed for photovoltaic systems and meets the requirements of EN 50539-11 for surge protective devices. It provides visual status indication via green and red indicators.