Emiter EM-421_DCAC DC/AC Combiner Box (3 MPPT, 50 A, 3-Phase)

The Emiter EM-421_DCAC DC/AC combiner box is a three-phase protection unit designed for photovoltaic installations featuring three independent MPPTs. The device, housed in a hermetic IP65 enclosure, is equipped with Dehn Type 2 surge arresters for both the direct and alternating current sides.

The Emiter EM-421_DCAC combiner box integrates DC and AC side protection within a single IP65-rated enclosure. This model is designed to support three PV strings working with three MPPTs of the inverter. Surge protection is provided by internal Dehn Type 2 components, including a DC side arrester rated up to 1000 V. The three-phase protection unit supports a maximum AC current of up to 50 A.

Key features

• Integrated DC and AC protection in one enclosure
• Compatibility with three independent MPPTs and PV strings
• Equipped with Dehn Type 2 DC (1000 V) and AC surge arresters
• Hermetic design with an IP65 protection rating

Technical specifications

Brand	Emiter
Model	EM-421_DCAC
Protection type	DC/AC
Number of phases	3
Max AC current	50 A
Number of MPPTs	3
Arrester type	2
Enclosure protection rating	IP65
Net depth	144 mm