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Chint NL1-63-463/30-ASI RCD – 4P – Type A – 63A – 30mA
Chint NL1-63-463/30-ASI residual current circuit breaker, a 63A 4 pole 30mA Type A selective RCCB designed for earth leakage and residual current protection in low voltage three-phase electrical installations.
£67.97
Why Choose the Chint NL1-63-463/30-ASI RCCB?
The Chint NL1-63-463/30-ASI is a reliable residual current circuit breaker designed to provide earth leakage protection in low voltage electrical installations. As part of the Chint NL1-63 RCCB series, it detects residual current faults and disconnects the circuit when leakage current is present, helping improve electrical safety in commercial, industrial and three-phase distribution systems.
This model combines Type A residual current protection with selective time-delayed operation, making it suitable for installations where coordinated RCD protection and discrimination between upstream and downstream devices are required. Selective RCCBs help reduce unwanted upstream tripping and support continuity of supply across larger electrical systems.
With a 63A rated current, 4 pole configuration, 30mA residual current sensitivity and Type A selective protection, the NL1-63-463/30-ASI is ideal for three-phase circuits requiring enhanced residual current protection and reliable earth leakage fault detection.
Key Advantages
- Compact RCCB designed for residual current protection.
- 63A rated current suitable for three-phase distribution circuits.
- 4 pole switching for three-phase installations with neutral.
- 30mA residual current sensitivity for additional protection against electric shock.
- Type A RCD detects AC and pulsating DC residual currents.
- Selective time-delayed operation supports RCD discrimination and improved supply continuity.
Key Features
- Chint NL1-63 residual current circuit breaker series.
- 63A rated operational current.
- 4 pole configuration.
- 30mA rated residual operating current.
- Type A residual current protection.
- Selective time-delayed RCD function.
- DIN rail mounted for easy installation in distribution equipment.
- Designed for reliable low voltage AC electrical protection.
Reliable Type A Selective Residual Current Protection
Residual current circuit breakers monitor the current flowing through live and neutral conductors. If an imbalance is detected, caused by leakage to earth, the RCCB trips and disconnects the circuit to help reduce the risk of electric shock and electrical fire.
The Type A selective protection of the Chint NL1-63-463/30-ASI makes it suitable for installations containing electronic equipment that may generate pulsating DC residual currents, while the selective time-delay function supports coordination with downstream RCD protection. This helps maintain safer operation and reduces unnecessary upstream disconnection.
Typical Applications
- Commercial distribution boards.
- Three-phase electrical panels.
- Sub-main distribution circuits.
- Machinery and control panels.
- Circuits with electronic equipment and appliances.
- Installations requiring RCD discrimination.
Technical Specifications
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| Current | 63 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Residual Current | 30 mA | |
| RCD Type | Type A | |
| Device Type | RCD | |
| Manufacturer | Chint | |
| Series | NL1-63 | |
| Model | NL1-63-463/30-ASI | |
| Product type | Residual Current Circuit Breaker | |
| Rated current | 63A | |
| Number of poles | 4 Pole | |
| Rated residual operating current | 30mA | |
| RCD Type | Type A Selective | |
| Trip characteristic | Time delayed / selective | |
| Rated voltage | 230 / 400V AC | |
| Frequency | 50 / 60Hz | |
| Standard | IEC/EN 61008-1 | |
| Mounting type | DIN rail mounting | |
| Application | Residual current and earth leakage protection |
Frequently Asked Questions
What is the Chint NL1-63-463/30-ASI used for?
It is used to provide residual current and earth leakage protection in low voltage three-phase electrical installations where Type A and selective RCD protection are required.
What current rating does this RCCB have?
The NL1-63-463/30-ASI has a rated current of 63A.
What does the 30mA rating mean?
The 30mA rating refers to the residual operating current sensitivity, meaning the device is designed to trip when earth leakage reaches approximately 30mA.
What does Type A mean on this RCD?
Type A means the device is designed to detect both sinusoidal AC residual currents and pulsating DC residual currents.
What does selective operation mean?
Selective operation means the RCCB has a time-delayed tripping characteristic to help coordinate with downstream RCDs and reduce unwanted upstream tripping.
Trusted by Electrical Professionals Worldwide
Chint NL1-63 Type A selective RCCBs are trusted by electricians, panel builders and contractors for coordinated residual current protection, compact installation and dependable performance in modern low voltage distribution systems.
