D Curve Circuit Breakers (1 Pole & 3 Pole)

D Curve Circuit Breakers: Reliable Protection for High-Inrush Applications

D Curve Circuit Breakers are specifically designed to support circuits that experience high starting currents. They are ideal for motors, pumps, compressors, and other inductive loads that require a higher magnetic trip threshold. The breakers available in this category include 1-Pole and 3-Pole D Curve MCBs, offered in 6kA and 10kA breaking capacities, giving electricians flexibility to match the right protection level with system requirements.

Built to Withstand Heavy Electrical Loads

Unlike standard breakers, D Curve MCBs allow momentary current spikes without tripping unnecessarily. This makes them suitable for commercial and light-industrial environments where equipment may draw several times its normal current during start-up. The strong thermal-magnetic mechanism ensures reliable overload and short-circuit protection while maintaining stable performance under demanding conditions.

Compact, Durable, and Easy to Install

Each breaker in this category is constructed with a durable casing and secure terminal design for safe wiring. The compact structure and DIN-rail mounting compatibility make installation quick and clean. Clear amperage labels allow electricians to easily identify and select the correct rating for their circuit.

Options for Single-Phase and Three-Phase Systems

Whether you need a 1-Pole breaker for a single-phase line or a 3-Pole breaker for a three-phase setup, the available D Curve MCBs deliver dependable protection. The 6kA models are suitable for standard installations, while the 10kA versions offer higher fault-breaking capacity for more robust systems.

Consistent Performance You Can Depend On

With stable switching capability, long service life, and effective protection against electrical faults, the D Curve circuit breakers in this range provide the reliability needed for heavy-duty electrical applications.

FAQs

What are D Curve circuit breakers used for?

They are designed for circuits with high inrush currents, such as motors, pumps, and inductive loads, where standard breakers may trip too quickly.

What breaking capacities are available in this category?

The breakers come in 6kA and 10kA breaking capacities, suitable for both standard and heavier fault conditions.

Are both single-phase and three-phase options available?

Yes, the range includes 1-Pole breakers for single-phase circuits and 3-Pole breakers for three-phase applications.

Why choose a D Curve breaker over a standard breaker?

D Curve breakers handle high start-up surges without nuisance tripping, making them ideal for equipment that draws large initial current spikes.

Are these breakers compatible with DIN rail mounting?

Yes, all available D Curve circuit breakers in this category are designed for easy DIN-rail installation.