nl1-100-4100/300 chint 100a 4 pole 300ma ac type rcd

Why Choose the Chint NL1-100-4100/300 Residual Current Device?

The Chint NL1-100-4100/300 is a dependable 4 pole Residual Current Device (RCD) designed to provide reliable protection against earth leakage faults in commercial, industrial and three-phase electrical installations. As part of the proven Chint NL1 RCCB series, it delivers effective residual current protection to help reduce the risk of electric shock and electrical fires while maintaining reliable system operation.

Designed for use alongside an appropriate overcurrent protective device, the NL1-100-4100/300 continuously monitors residual current and disconnects the supply whenever a leakage fault is detected. Its compact DIN rail design, robust construction and compliance with IEC/EN 61008-1 make it suitable for modern distribution boards, switchboards and industrial control panels.

With a 100A rated current, 300mA residual operating current and 400V AC four pole configuration, this Chint RCCB is ideal for three-phase distribution systems where protection against insulation faults and fire hazards is required.

Key Advantages

• Reliable 4 pole residual current protection for three-phase electrical systems.
• 100A rated current suitable for demanding commercial and industrial applications.
• 300mA earth leakage sensitivity for indirect contact and fire protection.
• Fast automatic disconnection during earth fault conditions.
• Compact DIN rail mounting for straightforward installation.
• Manufactured by Chint for dependable long-term performance.

Key Features

• Chint NL1 Series RCCB.
• 100A rated current (In).
• 300mA residual operating current (IΔn).
• 4 pole configuration.
• 400V AC operation.
• Residual current protection without integrated overcurrent protection.
• 35mm DIN rail mounting.
• Suitable for commercial, industrial and power distribution installations.

Technical Specifications

• Manufacturer: Chint
• Series: NL1
• Model: NL1-100-4100/300
• Product type: Residual Current Device (RCD / RCCB)
• Rated current: 100A
• Residual operating current: 300mA
• Number of poles: 4 Pole
• Rated voltage: 400V AC
• Frequency: 50 / 60Hz
• Rated insulation voltage: 500V
• Rated impulse withstand voltage: 4kV
• Rated conditional short-circuit current: 6kA
• Protection rating: IP20
• Mounting type: 35mm DIN rail
• Standard: IEC/EN 61008-1

Reliable Earth Leakage Protection

Residual Current Devices continuously monitor the balance between live conductors and disconnect the electrical supply whenever earth leakage is detected. This provides effective protection against indirect contact while also helping reduce the risk of electrical fires caused by insulation faults. A 300mA sensitivity is commonly selected for fire protection and upstream distribution circuits.

The Chint NL1 range is trusted for use in commercial buildings, industrial facilities and three-phase distribution systems where dependable residual current protection is essential for safe electrical operation.

Typical Applications

• Commercial distribution boards.
• Industrial electrical installations.
• Three-phase power distribution systems.
• Control panels and switchboards.
• Manufacturing facilities.
• Main incoming electrical protection circuits.

Trusted by Electrical Professionals Worldwide

Chint NL1 Residual Current Devices are trusted by electricians, panel builders and industrial engineers for reliable earth leakage protection, dependable operation and compliance with recognised international standards.