Noark 315A 750VDC 3Pole MCCB - 852722 (Ex9MD3B)

Overview

The Noark EX9MD 750VDC 3 Pole MCCB Circuit Breakers are engineered to deliver reliable, high-current protection for DC battery systems. Commonly installed on large battery banks, the EX9MD range provides a robust and more serviceable protection solution compared to standard NH fuse bases.

With advanced arc extinguishing technology, reduced manual operating force, and a wide range of installation options, these MCCBs are well suited to modern energy storage systems requiring dependable DC isolation and protection at higher current levels.

Key Features

High-Voltage DC Protection

• Rated at 250V DC per pole (3-pole configuration = 750V DC)
• Designed for demanding, high-power DC battery applications
• High breaking capacity for safe interruption of DC fault currents

Advanced Safety & Design

• Patented arc extinguishing technology for reliable DC switching
• Patented mechanism reduces manual operating force
• Energy-efficient, environmentally friendly modular construction

Installation Flexibility

• Busbar connection capability
• Lug line/load side connections
• Plug-in and rear connection options
• Supports field-installable accessories

Trip & Configuration Options

• Available with fixed or adjustable trip setting units
• High-quality compact MCCB design

Frame Sizes

• 315A – 400A: 140 × 225 × 172 mm
• 500A – 800A: 195 × 300 × 142 mm