Chint NL1-100 4P 100A 300mA RCCB – 4 Pole Residual Current Circuit Breaker, AC Type, 300mA Sensitivity, 6kA Withstand for Three-Phase Fire-Risk Protection

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Product Code: NL1-100-4P-100A-300mA
Brand: Chint
Product Type: RCCB (Residual Current Circuit Breaker)
Pole Configuration: 4 Pole (4P) – L1, L2, L3, N
Rated Current: 100 Amperes (100A)
Residual Operating Current (Sensitivity): 300 mA
Type: AC (detects sinusoidal AC leakage currents)
Short-Circuit Withstand Capacity (Im): 6 kA (with backup MCB)
Mounting Type: DIN Rail
Compliance Standard: IEC/EN 61008-1

Product Overview

The Chint NL1-100 4P 100A 300mA RCCB is a heavy‑duty, four‑pole residual current device engineered for three‑phase systems with neutral where fire‑risk protection is the priority. With a 300 mA trip threshold, it prevents insulation‑fault fires in large installations—disconnecting all phases and neutral simultaneously upon detecting high leakage currents.

Rated at 100 A, this RCCB supports high‑capacity commercial and industrial loads (e.g., large motors, HVAC banks, generator outputs). Its AC‑type sensing handles standard sinusoidal leakage, and the 6 kA withstand rating ensures robustness when paired with an upstream MCB.

Key Features

• 🔋 100 A High-Load Rating – Ideal for industrial and large commercial power systems

• ⚠️ 300 mA Sensitivity – Optimized for fire‑prevention earth‑leakage protection

• 🔌 4‑Pole Isolation (L1, L2, L3, N) – Complete simultaneous disconnection on fault

• 🌐 AC Type Detection – Detects standard sinusoidal AC leakage currents

• ⚡ 6 kA Withstand Capacity – Works with backup MCBs for reliable fault clearance

• 🧲 DIN Rail Mounted – Fits seamlessly into three‑phase distribution panels

• ✅ IEC/EN 61008-1 Certified – Meets international standards for safety and reliability

Technical Specifications

Typical Applications

• Fire‑risk earth‑leakage protection in large three‑phase installations

• Main incomer and sub‑distribution panels in commercial buildings

• Industrial machine and motor safety circuits

• Generator and UPS output protection

• Large HVAC, refrigeration, and pump systems

Why Choose Chint NL1-100 4P 100A 300mA RCCB?

The Chint NL1-100 4P RCCB delivers robust fire‑risk protection for high‑capacity three‑phase networks. Its 300 mA sensitivity and full four‑pole isolation safeguard installations against dangerous leakage without nuisance trips. Backed by Chint’s global quality standards and a 6 kA fault‑withstand rating, it’s the trusted solution for large‑scale electrical safety.