Noark 250A 500VDC 2Pole MCCB - 852902 (Ex9MD2B)

Overview

The Noark EX9MD 500VDC 2 Pole MCCB Circuit Breakers are designed to provide high-current, high-voltage protection for DC battery systems. Commonly used on battery banks, the EX9MD range offers a more serviceable and flexible protection solution compared to traditional NH fuse bases.

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

Key Features

DC Circuit Protection

• Rated at 250V DC per pole (2-pole = 500V DC)
• High breaking capacity for demanding DC applications
• Ideal for battery bank protection and main DC disconnects

Advanced Design & Safety

• Patented arc extinguishing technology for improved DC interruption
• Patented mechanism reduces manual operating force
• Energy-saving and environmentally friendly design

Installation Flexibility

• Busbar connection support
• Lug line/load side connections
• Plug-in and rear connection options
• Field-installable accessories

Trip & Configuration Options

• Fixed and adjustable trip setting units available
• Compact modular construction

Frame Sizes

• 80A – 125A: 90 × 140 × 109 mm
• 160A – 250A: 105 × 157 × 126 mm