Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Chint NL1-100-4100/100-S RCD – 4P – 100A – 100mA
Chint NL1-100-4100/100-S 4 pole 100A 100mA S type time delayed residual current device for selective earth leakage protection in commercial and industrial electrical installations.
£55.14
Why Choose the Chint NL1-100-4100/100-S Time Delayed Residual Current Device?
The Chint NL1-100-4100/100-S is a robust 4 pole time delayed Residual Current Device (RCD) designed to provide reliable earth leakage protection in commercial, industrial and three-phase electrical installations. As part of the trusted Chint NL1 RCCB series, this S type device is engineered to support selective tripping and improved discrimination in systems with multiple RCDs.
This RCCB continuously monitors residual current and disconnects the supply when an earth leakage fault is detected. The time delayed S type design helps prevent nuisance tripping by allowing downstream protective devices to operate first, making it suitable for upstream protection in distribution boards and larger electrical systems.
With a 100A rated current, 100mA residual operating current and 4 pole configuration, the NL1-100-4100/100-S is ideal for three-phase power distribution, control panels, commercial switchboards and industrial installations requiring dependable residual current protection with selective coordination.
Key Advantages
- Reliable 4 pole residual current protection for three-phase systems.
- Time delayed S type operation for improved discrimination.
- 100A rated current suitable for larger electrical installations.
- 100mA residual operating current for earth leakage and fire risk protection.
- DIN rail mounting for straightforward installation in distribution boards.
- Manufactured by Chint for dependable long-term performance.
Key Features
- Chint NL1 Series RCCB.
- 100A rated current.
- 100mA residual operating current.
- 4 pole configuration.
- S type time delayed tripping.
- Designed for three-phase electrical installations.
- Residual current protection without overcurrent protection.
- Compact 35mm DIN rail mounting.
Selective Earth Leakage Protection for Distribution Systems
Time delayed RCDs are designed to improve selectivity in electrical installations where more than one residual current device is fitted. By delaying tripping briefly, the upstream device allows downstream RCDs to respond first, helping reduce unwanted disconnection of wider circuits.
The Chint NL1-100-4100/100-S is particularly useful as an upstream protective device in commercial boards, industrial panels and three-phase distribution systems where continuity of supply and coordinated protection are important.
Typical Applications
- Commercial distribution boards.
- Industrial electrical installations.
- Three-phase power distribution systems.
- Main incomer and upstream RCD protection.
- Control panels and switchboards.
- Systems requiring selective RCD coordination.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 100 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | RCD | |
| Residual Current | 100 mA | |
| Manufacturer | Chint | |
| Series | NL1 | |
| Model | NL1-100-4100/100-S | |
| Product type | Time delayed Residual Current Device (RCD / RCCB) | |
| Rated current | 100A | |
| Residual operating current | 100mA | |
| Number of poles | 4 Pole | |
| Tripping type | S Type time delayed | |
| Rated voltage | 400V AC | |
| Frequency | 50/60Hz | |
| Rated insulation voltage | 500V | |
| Impulse withstand voltage | 4kV | |
| Rated conditional short-circuit current | 6kA | |
| Protection rating | IP20 | |
| Mounting type | 35mm DIN rail | |
| Standard | IEC/EN 61008-1 |
Frequently Asked Questions
What is the Chint NL1-100-4100/100-S used for?
It is used to provide earth leakage protection in three-phase electrical installations, particularly where time delayed selective tripping is required.
What does S type mean on this RCD?
S type means the RCD has a time delayed tripping function, helping improve discrimination with downstream RCDs and reducing unnecessary upstream disconnection.
Does this RCD provide overload protection?
No. The NL1-100-4100/100-S is an RCCB and must be used with suitable overcurrent protection such as an MCB or MCCB.
What is the rated current of this device?
This model has a 100A rated current.
Where is this time delayed RCD typically installed?
It is commonly installed on a DIN rail inside commercial distribution boards, industrial switchboards and three-phase control panels.
Trusted by Electrical Professionals Worldwide
Chint NL1 time delayed residual current devices are trusted by electricians, panel builders and industrial engineers for selective earth leakage protection, dependable operation and robust performance in modern electrical installations.
