32A Single-Phase AC Surge Protector Box
Enhance the safety of your solar power system with this high-performance 32A AC protection box. Designed for single-phase inverters up to 6.4 kVA, it ensures a safe and compliant connection between your solar power generation and the electricity grid
32A Single-Phase AC Surge Protection Box – 6kVA Photovoltaic Protection
The 32A AC protection box is the central safety component for any residential solar installation up to 6.4 kVA. It provides a secure connection between your photovoltaic inverter and the national grid. This JWUN model incorporates high-quality components to ensure the longevity of your equipment against power surges and insulation faults.
Why choose this AC protection box?
- High immunity (Type A-APR): The 30mA residual current device (RCD) is specially designed to ignore natural leakage currents from inverters, thereby preventing unwanted power cuts.
- Certified lightning protection: Equipped with a Citel Type 2 surge arrester (2-pole), it diverts atmospheric surges to protect the inverter’s sensitive electronics.
- All-Terrain Installation: With its IP65 protection rating, this 6-module enclosure is fully waterproof and can be installed both indoors and outdoors.
- Ready-to-Install Wiring: Pre-wired with HO7-VK flexible cable, the enclosure facilitates connection thanks to its multi-section earth terminals.
| Technical Specifications: Model AC32-APR | |
|---|---|
| Maximum power | 6400VA (6.4 kVA) |
| Residual Current Protection | 32A 30mA Type A-APR (Icc 4.5kA) |
| Surge protector | Type 2 - Citel In 20kA / Imax 40kA |
| Mains output cross-section | Up to 16 mm² (Copper only) |
| Earth terminal block | 2x16mm² + 5x10mm² |
| Enclosure dimensions | 231 x 202 x 113 mm (6 modules) |
| Cable glands included | 1xPG21 / 1xPG16 / 4xPG9 |
| Compliance | NF standards / National Grid |
This enclosure is a pre-wired photovoltaic switching and protection solution, designed to act as an interface between the inverter and the national grid.
Protection components (DIN rail)
- Main residual current circuit breaker: 32A, 30mA, Type A-APR (High Immunity) with a breaking capacity of 4.5 kA. It protects against current leakage whilst preventing unwanted tripping of the inverter.
- Type 2 surge arrester: Citel brand, 2-pole (Phase/Neutral), In 20kA – Imax 40kA. It protects the inverter against atmospheric surges.
- Surge arrester protection: Dedicated 20A circuit breaker (Ph/N) with a breaking capacity of 4.5 kA.
Connection and wiring
- Internal wiring: Carried out using HO7-VK flexible cable.
- Earth terminal block: Capacity of 2 x 16 mm² + 5 x 10 mm² to ensure safe earthing of the entire installation.
- Mains outputs: Terminal block compatible with copper cable up to 16 mm².
Technicalspecifications
- Enclosure: 6-module box (8 modules with the meter option) with an IP65 protection rating, suitable for outdoor installation.
- Dimensions: 231 mm x 202 mm x 113 mm.
Wiring diagram for the enclosure

FAQ - 32A AC Surge Protector Box (6.4 kVA)
32A Single-Phase AC Surge Protector Box — Mounting and accessories
32A Single-Phase AC Surge Protector Box by Kamase is available in our Mounting and accessories catalog. Product weight: 1.6 kg. Reference: AC32-APR.