Moulded Case Circuit Breaker

The HM1 series is a plastic-shell moulded case circuit breaker. Its rated operating voltage is up to 415V, rated insulation voltage up to 800V, rated impulse withstand voltage up to 8kV, and rated current ranges from 10A to 630A.

This circuit breaker is suitable for power distribution, motor protection, and fire protection applications. It features an overload alarm (no-trip) function: when the line is overloaded, the breaker with this function will not trip but only output an overload signal. This ensures the continuity of power supply.

The breaker provides overload, short-circuit, and undervoltage protection to prevent damage to lines and power devices. It complies with IEC60947-1 and IEC60947-2 standards.

Quality & Compliance

• IEC60947‑1 & IEC60947‑2 certified – international standard for low‑voltage switchgear and controlgear.
• High breaking capacity up to 50kA (Icu) with 100% Ics options, ensuring selective coordination.
• Built with high‑grade insulation materials (plastic shell) for durability and arc flash protection.
• Unique overload alarm (non‑trip) function – ideal for critical power supplies where continuity is paramount (e.g., hospitals, data centers).
• Manufactured under ISO 9001 quality management system.