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NL1-63-440/30-A Chint 40A 4 Pole 30mA A Type RCD
Chint NL1-63-440/30-A residual current circuit breaker, a 40A 4 pole 30mA Type A RCCB designed for earth leakage and residual current protection in low voltage three-phase electrical installations.
£34.43
Why Choose the Chint NL1-63-440/30-A RCCB?
The Chint NL1-63-440/30-A 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 features Type A residual current protection, making it suitable for installations where pulsating DC residual currents may occur. Type A RCCBs are commonly used with modern electrical equipment, electronic power supplies, appliances and control devices where enhanced residual current detection is required.
With a 40A rated current, 4 pole configuration and 30mA residual current sensitivity, the NL1-63-440/30-A is ideal for three-phase circuits requiring additional protection against electric shock and earth leakage faults.
Key Advantages
- Compact RCCB designed for residual current protection.
- 40A 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.
- Suitable for modern commercial, industrial and light power distribution systems.
Key Features
- Chint NL1-63 residual current circuit breaker series.
- 40A rated operational current.
- 4 pole configuration.
- 30mA rated residual operating current.
- Type A residual current protection.
- Designed for low voltage AC electrical installations.
- DIN rail mounted for easy installation in distribution equipment.
- Compliant with recognised RCCB protection standards.
Reliable Type A 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 protection of the Chint NL1-63-440/30-A makes it suitable for installations containing equipment that may generate pulsating DC residual currents, such as electronic appliances, control systems and modern power supplies. Its compact modular design allows straightforward integration into three-phase distribution boards and control panels.
Typical Applications
- Commercial distribution boards.
- Three-phase electrical panels.
- Light industrial installations.
- Machinery and control panels.
- Circuits with electronic equipment and appliances.
- Earth leakage protection for low voltage circuits.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Residual Current | 30 mA | |
| RCD Type | Type A | |
| Device Type | RCD | |
| Manufacturer | Chint | |
| Series | NL1-63 | |
| Model | NL1-63-440/30-A | |
| Product type | Residual Current Circuit Breaker | |
| Rated current | 40A | |
| Number of poles | 4 Pole | |
| Rated residual operating current | 30mA | |
| RCD Type | Type A | |
| Rated voltage | 400 / 415V 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 NL1-63-440/30-A used for?
It is used to provide residual current and earth leakage protection in low voltage three-phase electrical installations where Type A RCD protection is required.
What current rating does this RCCB have?
The NL1-63-440/30-A has a rated current of 40A.
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.
Does this RCCB provide overload protection?
No. An RCCB provides residual current protection only and should be used with suitable overcurrent protection such as an MCB or fuse.
Trusted by Electrical Professionals Worldwide
Chint NL1-63 Type A RCCBs are trusted by electricians, panel builders and contractors for reliable residual current protection, compact installation and dependable performance in modern low voltage distribution systems.
