Three-phase AC Protection Box GAVE ACT40SDA 28kW 40A 30mA

Product description

The GAVE ACT40SDA 28kW 40A 30mA Three-Phase AC Protection Box centralizes all critical AC-side functions in a single 3F+N enclosure: isolation, circuit breaker protection, residual current protection, and surge protection. Designed for installations up to ~28 kW at 3×400/230 V, it combines calibrated switchgear and a compact polycarbonate format with double insulation (Class II, IK7), offering quick, organized assembly in compliance with current standards for three-phase inverters and microinverters.

Main features

• Three-phase 3F+N capacity for 1 AC circuit with up to 40 A per phase (≈ 27.7–28 kVA/kW at 3×400 V).
• 4P 40 A circuit breaker (MCB), curve C, breaking capacity 6 kA (EN 60898-1) against overloads and short circuits.
• 4P Type A 30 mA residual current device (RCD), immune to unwanted tripping, personal protection (EN 61008-1).
• Type II SPD overvoltage protection (In 20 kA, Imax 40 kA, Up 1.5 kV) according to EN 61643-11, with associated fuse.
• Class II polycarbonate enclosure, high mechanical resistance (IK7), DIN rail, and streamlined internal wiring.
• Approximate dimensions: 286 × 418 × 148 mm (height × width × depth).

Advantages or benefits

• Faster and cleaner installation by concentrating all AC-side protections in a single panel.
• Enhanced safety for people (RCD 30 mA) and equipment (Type II SPD that mitigates grid transients).
• Facilitates technical compliance: selectivity with upstream protections and SPD coordination.
• Easy maintenance thanks to front access, accessible terminals, and clear labeling.
• Robust format suitable for protected indoor or outdoor use, ideal for demanding residential and light C&I environments.

Purpose or applications

Designed as an interconnection and safety point between the AC generator/backup and the main panel in three-phase installations. It is ideal for string inverters of ~18–28 kW or branches of 3-phase microinverters, as well as for systems with AC-coupled batteries when the line current does not exceed 40 A per phase. Suitable for residential, small commercial, and light C&I applications requiring a reliable, monitorable, and scalable AC interface.

Technical specifications

Compatibilities

Compatible with three-phase inverters of ~18–28 kW and with 3F microinverter strings, provided the aggregate does not exceed 40 A/phase. Integrable with monitoring systems via CT or external meters and can be coordinated with main circuit breaker, general residual current device, and main SPD according to the project.

GAVE ACT40SDA 28kW 40A 30mA Three-Phase AC Protection Box is a professional solution for demanding self-consumption and light C&I projects. Increases safety, streamlines installation, and ensures a reliable and orderly AC interconnection from day one.