Three-phase 400V 16A reversing switch box with socket

Three-Phase 400V 16A Changeover Box with Socket – Protection and Power Continuity

The three-phase 400V 16A changeover box with 3 sockets combines safety, reliability, and power continuity for your critical electrical installations. It integrates a ONCCY EATS2 4P 63A automatic changeover switch, a Resi9 4P 63A residual current device (RCD) with 300 mA sensitivity, and two Resi9 4P 25A 400V Curve C modular circuit breakers, along with three 16 A surface-mounted sockets, offering a complete and modular solution suitable for residential, commercial, or semi-industrial environments.

Resi9 4P 63A Residual Current Device (RCD) with 300 mA Sensitivity

The RCD protects people and equipment against current leakage. With a 300 mA sensitivity, it ensures reliable protection for your three-phase installation and complements the safety provided by the box.

Resi9 4P 25A 400V Curve C Modular Circuit Breakers

These circuit breakers replace the standard 16 A and provide effective protection against overloads and short circuits on main circuits. The Curve C characteristic and DIN rail mounting ensure safety, robustness, and simplified installation.

ONCCY EATS2 4P 63A Automatic Changeover Switch

The ONCCY EATS2 changeover switch ensures continuous electrical power by automatically switching between a primary source (mains) and a backup source (battery, inverter, generator, or solar) in less than 50 milliseconds. This ultra-fast switching protects sensitive equipment: servers, photovoltaic systems with storage, professional freezers, medical devices, or security equipment.

Operation:

• Source A (primary): mains power

• Source B (backup): generator, battery, or standalone solar system

The changeover switch ensures complete and secure isolation of the circuits, preventing simultaneous connection of the two sources.

Practical applications:

• Hybrid photovoltaic installations

• UPS and backup systems

• Automatic generator switching

• Remote or semi-autonomous sites

• Shops and offices requiring continuous service

Main technical specifications:

• Rated current: 6 to 63 A

• Voltage: AC 110/220/400V, 50/60 Hz

• 4 poles (three-phase + neutral)

• Switching time: < 50 ms

• DIN rail mounting, compact dimensions (~90 mm)

• Over 8,000 guaranteed cycles

• CE certified

16 A Surface-Mounted Sockets – 250 V AC

Practical and safe, these three sockets feature a protective flap, a ground pin, screw terminals, and child protection. Water-resistant (IP44), they allow multiple devices to be connected safely and are ideal for damp or demanding environments.

Key Advantages of the Box

• Complete protection against overloads and short circuits thanks to modular circuit breakers

• 4P 63A differential protection against current leaks

• Ultra-fast, imperceptible switching for equipment

• Total isolation of sources A and B

• Easy DIN rail installation

• High reliability with over 8,000 cycles

• Compact and modular, fits all types of enclosures

• Three safe sockets to connect multiple devices

💡 Wattuneed Tip: Always pair the automatic changeover switch with appropriate differential protection and circuit breakers to ensure a safe and optimal installation, especially in hybrid photovoltaic systems or generator setups.

FAQ – Three-Phase 400V 16A Changeover Box

1. What components are included in this box?
The box includes:

• A ONCCY EATS2 4P 63A automatic changeover switch
• A Resi9 4P 63A residual current device (RCD) with 300 mA sensitivity
• Two Resi9 4P 25A 400V Curve C modular circuit breakers
• Three 16 A surface-mounted sockets

This combination ensures protection, power continuity, and safety for your electrical installations.

2. What is the function of the automatic changeover switch?
The ONCCY EATS2 automatically switches between the primary source (mains) and the backup source (battery, inverter, generator, or solar) in less than 50 milliseconds, ensuring continuous power for sensitive equipment.

3. What does the 4P 63A 300 mA RCD protect?
It protects people and equipment against current leakage in the three-phase installation, adding complementary safety to the modular circuit breakers.

4. What is the role of the Resi9 4P 25A modular circuit breakers?
They protect main circuits against overloads and short circuits. Curve C and DIN rail mounting allow reliable protection and simplified installation.

5. How many sockets are available and what are their features?
The box includes 3 surface-mounted 16 A sockets with ground pin, child protection, screw terminals, and waterproof flap (IP44), suitable for damp environments and multiple device use.

6. Where can this box be installed?
It is designed for indoor use, in dry or protected damp areas, and must be mounted on a DIN rail.

7. What maintenance is required?
Annual visual inspection and switching test every 6 months are recommended. With over 8,000 guaranteed cycles, this box provides long-term reliability.

8. Can this box be used with a hybrid photovoltaic inverter?
Yes, it is ideal for hybrid photovoltaic systems, UPS setups, and installations with generators, ensuring continuous power supply.

9. Is the box delivered ready to use?
Yes, it is delivered ready to install on a DIN rail. Wiring must be performed by a qualified electrician to ensure safety.