Why Choose the Chint NM8-125S-4P-40A MCCB?
The Chint NM8-125S-4P-40A is a dependable moulded case circuit breaker (MCCB) designed to provide reliable overload and short circuit protection for low-voltage electrical distribution systems. As part of the Chint NM8 series, it delivers robust circuit protection for commercial, industrial and panel-building applications where safe isolation and dependable operation are essential.
This MCCB features adjustable thermal magnetic protection, combining thermal overload protection with magnetic short circuit protection. The adjustable overload setting allows engineers and panel builders to coordinate protection with cable ratings, connected loads and downstream equipment, helping improve installation flexibility and system reliability.
With a 40 A rated current, 4-pole configuration and 50 kA breaking capacity, the NM8-125S-4P-40A is suitable for three-phase systems with neutral, distribution boards, industrial switchboards, machinery supplies and commercial electrical installations requiring dependable MCCB protection.
Key Advantages
- Reliable moulded case circuit breaker for low-voltage protection.
- 40 A rated current suitable for commercial and industrial circuits.
- 4-pole configuration for three-phase systems with neutral.
- 50 kA short circuit breaking capacity for dependable fault protection.
- Adjustable thermal magnetic trip unit for overload and short circuit protection.
- Compact frame design for panel and switchboard installation.
- Suitable for contractors, panel builders and maintenance engineers.
Key Features
- Chint NM8 series MCCB.
- 40 A rated current.
- 4-pole design.
- 50 kA breaking capacity.
- Adjustable thermal magnetic protection.
- Provides overload and short circuit protection.
- Suitable for AC low-voltage power distribution systems.
- Compact frame design for electrical panels and switchboards.
Reliable MCCB Protection for Electrical Distribution
Moulded case circuit breakers such as the Chint NM8-125S-4P-40A protect cables, switchgear and connected equipment by disconnecting circuits during overload or short circuit conditions. This helps reduce the risk of electrical damage and supports safer operation across low-voltage installations.
The NM8 range is widely used in distribution panels, control systems and machinery applications where adjustable protection, high breaking capacity and straightforward installation are required.
Typical Applications
- Three-phase distribution systems with neutral.
- Commercial electrical distribution panels.
- Industrial control panels and switchboards.
- Motor control and machinery circuits.
- Manufacturing and process equipment.
- Panel building and electrical maintenance projects.
