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nm8-125s-4p-50a chint 50a 4p adjustable thermal mccb
Chint NM8-125S-4P-50A moulded case circuit breaker with 50A rated current, 4-pole configuration, adjustable thermal magnetic protection and 50kA breaking capacity for low-voltage electrical distribution.
Why Choose the Chint NM8-125S-4P-50A MCCB?
The Chint NM8-125S-4P-50A is a robust 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 dependable circuit protection for commercial, industrial and panel-building applications where safe isolation and long-term reliability 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 electrical equipment, helping improve installation flexibility and system safety.
With a 50 A rated current, 4-pole configuration and 50 kA breaking capacity, the NM8-125S-4P-50A 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.
- 50 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.
- 50 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-50A 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.
Technical Specifications
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| Mounting Type | Fixed | |
|---|---|---|
| Application | Power distribution | |
| Current | 50 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Trip Unit | Thermal-magnetic | |
| Manufacturer | Chint | |
| Series | NM8 | |
| Model | NM8-125S-4P-50A | |
| Product type | Moulded Case Circuit Breaker (MCCB) | |
| Rated current | 50 A | |
| Number of poles | 4 Pole | |
| Trip unit | Adjustable thermal magnetic | |
| Breaking capacity | 50 kA | |
| Rated operational voltage | Up to 690 V AC | |
| Rated insulation voltage | 800 V | |
| Rated impulse withstand voltage | 8 kV | |
| Frequency | 50 / 60 Hz | |
| Protection functions | Overload and short circuit protection | |
| Mounting type | Panel / switchboard mounting | |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the Chint NM8-125S-4P-50A used for?
It is used to protect low-voltage electrical circuits against overloads and short circuits in commercial, industrial and machinery applications.
What is the rated current of this MCCB?
The NM8-125S-4P-50A has a 50 A rated current.
How many poles does this breaker have?
This model has a 4-pole configuration, making it suitable for three-phase systems with neutral.
What breaking capacity does this MCCB provide?
The Chint NM8-125S-4P-50A provides a 50 kA short circuit breaking capacity.
What type of protection does the breaker use?
It uses an adjustable thermal magnetic trip unit to provide overload and short circuit protection.
Trusted by Electrical Professionals Worldwide
Chint NM8 moulded case circuit breakers are used by panel builders, contractors and maintenance engineers to provide dependable low-voltage circuit protection across commercial and industrial installations.
