Emiter EM-528 DCAC Connection Box (DC/AC, 2 MPPT, IP65)

The Emiter EM-528 DCAC connection box is a ready-to-connect device dedicated to photovoltaic installations, supporting two independent module strings. The product features an IP65 rated enclosure for surface mounting and includes integrated overvoltage and overcurrent protection on both the DC and AC sides.

The Emiter EM-528 DCAC hermetic combiner box is designed to protect three-phase photovoltaic installations. The enclosure with an IP65 protection rating and Class II insulation allows for safe surface mounting in various environmental conditions. The set is factory-assembled and ready to be plugged into the circuit using the pre-installed MC4 panel receptacles. The internal components are based on Dehn surge protective devices and Noark modular switchgear.

Key features

• DC and AC side protection optimized for inverters with 2 independent MPPTs.
• Integrated Type 2 Dehn surge protective devices for direct and alternating current circuits.
• Built-in three-phase 16 A overcurrent circuit breaker (B curve).
• Instantaneous 300 mA residual current device (RCD) ensuring electric shock protection.
• Halogen-free 24-module enclosure with IK08 mechanical impact resistance.
• Convenient connection of DC circuits thanks to integrated standard MC4 panel receptacles.

Technical data

Number of phases	3
Number of MPPTs	2
Protection rating	IP65
Impact resistance	IK08
DC surge protective devices	2 x Dehn DG M YPV SCI 1000 (Type 2)
AC surge protective device	1 x Dehn DG M TNS 275 (Type 2)
Overcurrent circuit breaker	16 A (B curve)
Residual current device (RCD)	300 mA
Rated insulation voltage (Ui)	690 V AC / 1000 V DC
Enclosure depth	144 mm