LIVE Electrical DCM440C 4-Pole 40A C Curve 6kA DC Miniature Circuit Breaker

Product Overview

The LIVE Electrical DCM440C 4-Pole DC Miniature Circuit Breaker provides high-performance circuit protection for direct current (DC) systems operating up to 1000V DC. With a rated current of 40A and a 6kA breaking capacity, it ensures reliable disconnection and overload protection in demanding DC applications. The C-curve thermo-magnetic trip characteristic makes it ideal for installations with moderate inrush currents, such as solar PV arrays, EV charging systems, and battery storage setups.

Fully compliant with IEC/EN 60898-2, the DCM440C combines safety, precision, and easy installation. Its IP20-rated terminals offer touch-safe protection, while the DIN rail mountable design ensures straightforward integration into any control or power distribution enclosure.

Key Features & Benefits

• Poles: 4P – supports higher voltage DC systems and multi-string configurations.
• Rated current (In): 40A.
• Rated voltage (Ue DC): Up to 1000V DC (4-pole).
• Breaking capacity: 6kA – dependable short-circuit and overload protection.
• Trip curve: C-curve thermo-magnetic release for moderate inrush current protection.
• Protection rating: IP20 – ensures user safety with finger-safe terminals.
• Compliance: Fully certified to IEC/EN 60898-2 for DC applications.
• Mounting: Standard DIN rail compatible for fast, easy installation.

Typical Applications

• Solar photovoltaic (PV) arrays and strings
• Battery energy storage systems (BESS)
• Electric vehicle (EV) charging infrastructure
• Industrial and automation DC panels
• Off-grid and renewable power systems

Downloads

Download DCM440C Data Sheet (PDF)

Download LIVE Electrical Catalogue (PDF)