Disjoncteur Schneider Resi9 XE - 2P - 50A - Courbe C - 3kA - 230/400V - Réf. R9EFC250

Circuit breaker Schneider Resi9 XE 2P 50A curve C 3kA - High-power residential protection

The Schneider Electric Resi9 XE 2P 50A C-curve modular circuit breaker is designed to effectively protect high-power residential and commercial electrical circuits against overloads and short circuits. With its breaking capacity of 3kA and its C trip curve, it is the ideal solution for protecting your installations up to 50A in bipolar configuration (phase + neutral or 2 phases).

Typical applications

• Photovoltaic installations: AC protection of single-phase solar inverters up to 12 kW (inverter output circuit to main switchboard)
• Electric vehicle charging points: charging circuits up to 11 kW single-phase (wallbox)
• Residential heat pumps: protection of air/water heat pumps up to 10 kW electric
• High-power electric heating: convectors, inertia radiators, underfloor heating (circuits up to 11.5 kW @ 230V)
• Electric hot water cylinders: 200-300 litre water heaters with steatite or armoured resistance
• Professional kitchen equipment: ovens, hobs, professional coffee machines
• Residential air conditioning: high-power centralised air conditioning units

Technical specifications

Why choose the Schneider Resi9 XE 2P 50A curve C circuit breaker?

1. C curve: the perfect balance for mixed installations

The C tripping curve offers a magnetic threshold of 5 to 10 times the rated current (i.e. 250-500A for a 50A). This characteristic guarantees:

• ✅ Effective protection against short-circuits: instantaneous tripping from 250A
• ✅ Inrush current tolerance: avoids nuisance tripping when starting heat pumps, compressors, transformers, etc.
• ✅ Versatility: suitable for resistive loads (heating), inductive loads (motors) and capacitive loads (photovoltaic inverters).

2. 2P configuration: secure bipolar breaking

The protected 2-pole circuit-breaker provides :

• Simultaneous phase + neutral breaking (single-phase): enhanced safety for maintenance, complete isolation of the circuit
• 2-phase breaking (two-phase 400V): protection of two-phase loads (certain heat pumps, industrial machines)
• Standards compliance: meets Belgian and European requirements (RGIE, NF C 15-100)

3. 3kA breaking capacity: suitable for residential/tertiary use

The 3000A (3kA) breaking capacity is perfectly sized for :

• ✅ S tandard residential installations: typical short-circuit current 1.5-2.5kA at end of line
• ✅ Branch circuits downstream of the main switchboard: protection of sub-divisional switchboards
• ✅ Domestic photovoltaic installations: AC inverter protection 3-12kW

💡 Good to know: For installations with high short-circuit currents (close to transformers, large subscriptions), give preference to the iC60N (6kA) or iC60H (10kA) ranges.

4. 50A capacity: high-power circuits

With 50A @ 230V = 11.5 kW of protected power, this circuit-breaker protects :

• 🔋 Photovoltaic inverters up to 12 kW AC (e.g. Deye SUN-12K-SG04LP3, Huawei SUN2000-12KTL-M2)
• ⚡ 1 1 kW single-phase EV charging stations (Type 2 accelerated charging)
• 🌡️ Heat pumps 8-10 kW electric (thermal output 25-35 kW)
• 🔥 High-power central heating (electric radiators, underfloor heating)

🔧 Installation and sizing

Sizing rules

⚠️ Warning: Always check cable cross-section, line length and voltage drop. For precise calculations, use our cable section calculator.

Installation advice

• DIN rail mounting: clip the circuit breaker onto a standard 35mm DIN rail, 4 modules wide (36mm).
• Wiring: use rigid conductors (H07V-R/U) or flexible conductors with ferrules (H07V-K + crimp ferrules)
• Minimum cross-section: 10 mm² copper for 50A (depending on length and installation method, consult RGIE/NF C 15-100)
• Tightening torque: 2 N.m (check with a torque screwdriver)
• Identification: clearly label the protected circuit (e.g. "PV Inverter", "VE Wallbox", "PAC")
• Ventilation: allow 10-15mm spacing above/below for heat dissipation

🌞 Focus: Integration in photovoltaic installations

The Resi9 XE 2P 50A circuit breaker is perfectly suited to AC protection of single-phase solar inverters:

Sizing for PV inverters (examples).

💡 General rule: choose a circuit breaker with rating ≥ 1.25 x rated inverter current (normative safety margin).

In summary: your advantages with the Resi9 XE 2P 50A

• ✅ S chneider Electric quality: proven reliability, 20,000 mechanical operations guaranteed
• ✅ 2 P 50A configuration: high-power circuits up to 11.5 kW @ 230V
• ✅ Versatile C-curve: resistive, inductive and capacitive loads
• ✅ 3kA breaking capacity: suitable for standard residential and tertiary applications
• ✅ DIN rail mounting: fast, modular installation (4 modules / 36mm)
• ✅ European standards: EN/IEC 60898-1 compliance, CEBEC certification
• ✅ Multiple applications: photovoltaics, EV terminals, heat pumps, heating

Wattuneed, your partner for secure, high-performance electrical and photovoltaic installations.