Power circuit breaker h3+ P630 LSI 3x250A 40kA HNW250JR

Durable Power Circuit Breaker for Industrial and Commercial Installations

The three-pole MCCB h3+ P630 LSI ensures fast and reliable circuit disconnection at a rated current of 250 A and a maximum short-circuit breaking capacity of 40 kA. Thanks to its fixed mounting design and front terminal arrangement, the device fits perfectly into switchboards with dimensions 260 × 140 × 150 mm, protecting installations against overloads and short circuits across a wide voltage range of 220‑690 V.

Key Features and Practical Benefits

• Precise Adjustment – Adjustable overload release setting from 90 A to 250 A and adjustable short-circuit release from 122.85 A to 2500 A, allowing protection to be matched to load characteristics.
• Fast Response – Opening time is only 10 ms, effectively limiting short-circuit current before damage occurs to network components.
• Built-in Trip Indicator facilitates quick event detection and accelerates diagnostics.
• Environmental Resistance – Protection class IP40 and operating temperature range ‑25 °C … 70 °C, complying with IEC 60664/IEC 60947‑2 standards, ensuring reliability even in challenging industrial environments.
• Mounting Flexibility – Screw connections at main contacts and the option to add an optional motorized drive enable integration with automation and control systems.

Installation, Compliance, and Applications

The device is designed for fixed installation in distribution boards; all components are available in a ready-to-install version without additional mounting accessories for DIN or TH rails. It meets European safety standards (IEC 60947‑2) and holds a EU conformity certificate, simplifying the project approval process. With its three poles and front connection capability, the circuit breaker is ideal for:

• protecting supply circuits for machines with high inrush currents,
• safeguarding lighting and socket sections in public buildings,
• industrial installations requiring high breaking capacity under short-duration short-circuit impulses.

Thanks to its robust construction and extensive configurability, this power circuit breaker provides a reliable solution for both installers seeking ease of installation and end-users requiring a high level of electrical protection.