Views: 0 Author: Site Editor Publish Time: 2026-09-18 Origin: Site
When an MCB interrupts a fault current, the electrical contacts separate and an arc can form between them.
What happens next depends on the components working inside the breaker.
One of these critical components is the Arc Chamber, also known as an Arc Chute. Positioned around the contact area, it provides a controlled structure for managing the arc during interruption.
HAIPART manufactures precision Arc Chambers for MCB applications, combining carefully selected materials, copper plating and a compact multi-part structure.
The HAIPART MCB Arc Chamber featured here uses a compact assembly consisting of:
Component | Specification |
|---|---|
Splitter Plates | 8 pieces |
Splitter Plate Material | #10 cold-rolled strip steel |
Supports | 2 pieces |
Support Material | Green insulating paper |
Arc Isolation Plate | 1 piece |
Surface Treatment | 3 μm copper plating |
Application | MCB |
The combination of 8 splitter plates + 2 supports + 1 arc isolation plate creates the basic internal structure of the Arc Chamber.
Each component has a defined position and function within the assembly.
The splitter plates are manufactured from #10 cold-rolled strip steel.
For an Arc Chamber, the splitter plates need to maintain consistent geometry and positioning inside the assembly. The plate profile, dimensions, spacing and forming quality can all influence the final assembly.
For this reason, precision forming and dimensional consistency are important during manufacturing.
The plates are then treated with a 3 μm copper plating layer according to the specified product configuration.
Copper plating provides a conductive metallic surface and can also contribute to the surface characteristics required by the component design.
For this MCB Arc Chamber, the specified copper plating thickness is:3 μm
Maintaining a consistent coating process is therefore part of the overall manufacturing requirements.
The eight splitter plates are held within the assembly by two green insulating-paper supports, together with one arc isolation plate.
These insulating components help maintain the intended separation and structural configuration of the metal plates.
The result is a compact assembly that combines:
Metal splitter plates + insulating supports + arc isolation
into one MCB internal component.
Rather than treating each part independently, the complete assembly needs to maintain the correct relationship between all components.
An Arc Chamber may look simple once assembled, but its manufacturing process involves multiple steps.
A typical production workflow can include:
Material Preparation
↓
Precision Stamping / Forming
↓
Copper Plating
↓
Insulating Component Preparation
↓
Component Assembly
↓
Dimensional & Visual Inspection
↓
Finished Arc Chamber
For circuit protection components, consistency from batch to batch is particularly important.
A small dimensional deviation in an individual part can affect the fit and positioning of the complete assembly.
At HAIPART, we focus on the components that work inside low-voltage circuit protection products.
Our component manufacturing capabilities cover areas including:
Arc Chambers / Arc Chutes
Metal Stamping Parts
Copper Conductive Components
Terminals
Copper Coils
Contact Components
Riveting & Welding Components
Customized Precision Assemblies
For Arc Chamber projects, HAIPART can work with customers on material selection, component geometry, stamping, surface treatment and assembly requirements according to the specific breaker design.
The goal is not simply to manufacture individual metal parts, but to provide a consistent component solution that integrates into the customer's circuit breaker.
An MCB may be compact, but the components inside it perform highly specific functions during circuit interruption.
The Arc Chamber is one example of how a relatively small component can play an important role in the overall breaker structure.
8 splitter plates.
2 insulating supports.
1 arc isolation plate.
3 μm copper plating.
Behind these numbers is a manufacturing process where material, geometry, surface treatment and assembly precision all matter.
HAIPART — Core Components for Circuit Protection.
An Arc Chamber is an internal MCB component designed to help control and extinguish the electrical arc generated when the circuit breaker interrupts current.
This configuration uses 8 splitter plates, supported by two insulating supports and one arc isolation plate.
The splitter plates in this configuration use #10 cold-rolled strip steel.
The specified copper plating thickness for this Arc Chamber is 3 μm.
HAIPART provides customized manufacturing solutions for circuit breaker internal components, including Arc Chambers, based on customer drawings, specifications and application requirements.
