Noark 630A 750VDC 3Pole MCCB - 852763 (Ex9MD4B)

Overview

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

With advanced arc extinguishing technology, reduced manual operating force, and multiple installation options, these MCCBs are well suited to modern energy storage systems requiring dependable DC isolation and protection.

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 design 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
• Compact, high-quality modular MCCB design

Frame Sizes

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