Circuit breaker ABB 3KA - 2P - 63A - Curve C - 400V - Ref. EP32C63

Vynckier EP32C63 Two-pole 63A Modular Circuit Breaker

The ABB-Vynckier EP32C63 modular circuit breaker is a two-pole electrical protection device designed to protect your circuits against overloads and short circuits. With its rated current of 63A and its C trip curve, it fits perfectly into residential and tertiary photovoltaic installations.

Main applications

This 63A two-pole circuit breaker can be used in a wide range of photovoltaic configurations:

• Protection of single-phase AC circuits: secures the output of solar inverters up to 14 kVA (63A × 230V)
• AC protection cabinets: an essential component of electrical panels for photovoltaic installations
• Downstream protection for hybrid inverters: works in conjunction with differential switches in storage systems
• Residential power circuits: suitable for main lines supplying heat pumps, EV charging stations, etc.

Detailed technical characteristics

Why choose curve C?

Tripping curve C (between 5 and 10 × In) is suitable for general circuits with moderate inrush currents:

• Photovoltaic inverters (soft start)
• Heat pumps and heating systems
• Lighting circuits and sockets
• Charging points for electric vehicles

💡 Good to know: Vynckier's EP30/EP32 series is now produced under the ABB brand since the takeover of Vynckier. You can receive either a product marked "Vynckier" or "ABB" depending on stocks, as both are strictly identical technically.

Integration into your photovoltaic installations

The EP32C63 circuit-breaker can be integrated into several of Wattuneed's typical configurations:

• In a single-phase AC protection box: combined with a 2P 63A type A or AC differential switch
• Hybrid inverter protection: secures the AC output of Deye, Sofar and Huawei inverters up to 15 kW
• House main line: at the distribution header to supply a sub-divisional switchboard
• Heat pump circuit or EV terminal: dedicated protection for large consumers

Advantages of the ABB-Vynckier brand

• Proven reliability: Belgian brand with a long history in electrical protection
• CEBEC compliance: approved for the Belgian and European markets
• Universal compatibility: standard 35mm DIN rail mounting
• Easy wiring: screw terminals accept rigid and flexible cables
• Simplified maintenance: parts available and interchangeable

Installation and precautions for use

Installation: Clip the circuit breaker onto a 35mm DIN rail in your electrical cabinet. Allow 2 modules in width (36mm).

Connection: Follow the wiring diagram supplied. Use cables rated for 63A (minimum 16mm² copper for short circuits). Tighten the terminal screws with an appropriate torque (2.5 Nm).

Selectivity: Upstream, install a circuit breaker or differential switch with a higher rating to ensure selectivity.

⚠️ Safety: Electrical equipment must be installed by a qualified electrician. Always switch off the power supply before carrying out any work. Check that your installation complies with standard NF C 15-100 (France) or RGIE (Belgium).