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40A Three-Phase Circuit Breaker Box
40A Three-Phase Circuit Breaker Box
40A Three-Phase Circuit Breaker Box
40A Three-Phase Circuit Breaker Box
40A Three-Phase Circuit Breaker Box
40A Three-Phase Circuit Breaker Box

40A Three-Phase Circuit Breaker Box

CHF240.76
Tax included
coffret-limiteur-tri-40A
0768563824197

Secure your three-phase photovoltaic system with this compact AC switchboard. Designed to handle balanced power flows, it ensures optimal distribution and thermal-magnetic protection across all three phases.

  • Power supply and distribution (40A): Equipped with a first 40A four-pole circuit breaker (3kA) to supply the cabinet and a second 40A circuit breaker dedicated to protecting the output line to the property.
  • Inverter protection (16A): 1 four-pole 16A circuit breaker ensuring the safety of the generation circuit (designed for a 2.5 mm² supply from the inverter).
  • Heavy-duty cabling: Connections designed for a minimum of 10 mm² on the supply and output to ensure maximum efficiency and enhanced safety.
  • Compliance: Suitable for a residual current output (500mA max) and a standard three-phase installation.
  • Application: Ideal for three-phase photovoltaic systems requiring a reliable and safe local circuit breaker.

Key features: Comprehensive three-phase protection with dual 40A cut-off, 16A inverter protection and optimised cable cross-sections.

40 A three-phase limiter box


Optimise the safety and management of your solar installation with this 40 A three-phase AC protection/limiter box. This panel acts as the central, secure connection point between your three-phase mains supply, your inverter and your domestic electrical system.





Triple protection for controlled three-phase distribution

This box is designed to manage power flows across the three phases (L1, L2, L3) and the neutral:

  • Inverter protection (16A): A 16A four-pole (4P) circuit breaker provides thermal and magnetic protection for the photovoltaic circuit (2.5 mm² cable from the inverter).
  • Panel power supply (40A): A first 40A four-pole circuit breaker dedicated to the building’s main power supply (minimum 10 mm² cabling).
  • Output to the dwelling (40A): A second 40A four-pole circuit breaker protecting the supply line to the dwelling’s residual current device (minimum 10 mm² output).





Technical specifications:

  • 2 four-pole 40A circuit breakers (3kA): For the main supply and the residential output.
  • 1 x 16A four-pole circuit breaker (3kA): For dedicated protection of the three-phase inverter.
  • 10 mm² power cabling: Minimum cross-section required for the supply and output to ensure optimal conductivity.
  • Compliance: Suitable for residual current outlets (500mA in France).





Wiring diagram for the box

Schéma de câblage coffret limiteur triphasé





FAQ - 40A three-phase limiter box

1. What is the main role of this box in a solar installation? +
This box serves as a secure connection point between your three-phase inverter, the public electricity grid and your domestic fuse box. It centralises the protection and allows you to limit or isolate the current flow across the three phases (L1, L2, L3) to ensure that your solar power supplies your home as a priority in complete safety.
2. What cable cross-sections should be used for the connection? +
To ensure optimal conductivity and comply with safety standards at 40A, the main supply and the output to the home must be wired with a minimum cross-section of 10 mm². The circuit dedicated to the inverter (protected by the 16A circuit breaker) requires a cross-section of 2.5 mm².
3. Why does the distribution box use four-pole circuit breakers? +
In three-phase systems, safety requirements dictate that all three phases and the neutral must be disconnected simultaneously. Four-pole (4P) circuit breakers provide full thermal and magnetic protection on each power line, preventing any risk of reverse current or dangerous imbalance during maintenance or in the event of an electrical fault.
4. Is this box compliant for installation in France or Belgium? +
Yes, this box is designed to comply with three-phase AC protection standards. It is perfectly suited for installation upstream of the home’s residual current devices (typically 500mA in France). Its robust design and 3kA-rated circuit breakers ensure reliable protection against overloads and short circuits.
coffret-limiteur-tri-40A

Specific References

UPC
768563824197
EAN13
0768563824197
MPN
coffret-limiteur-tri-40A
New

40A Three-Phase Circuit Breaker Box — Mounting and accessories

40A Three-Phase Circuit Breaker Box is available in our Mounting and accessories catalog. Product weight: 2.0 kg. Reference: coffret-limiteur-tri-40A.