Chint NM1TL-250/4/X1/T1 enclosed Earth Leakage Circuit Breaker with 250A rating, 4-pole configuration and adjustable 50 mA to 500 mA earth leakage protection for industrial and commercial electrical distribution.
£2,167.19
The Chint NM1TL-250/4/X1/T1 is a heavy-duty enclosed Earth Leakage Circuit Breaker (ELCB) designed to provide reliable protection for low-voltage electrical distribution systems. Combining a high-performance moulded case circuit breaker with integrated earth leakage protection, it safeguards electrical installations against overloads, short circuits and earth fault currents in demanding commercial, industrial and infrastructure applications.
Part of the proven Chint NM1TL series, this enclosed ELCB features adjustable earth leakage sensitivity and configurable trip delay settings, allowing electrical engineers to optimise protection coordination whilst reducing unnecessary tripping. Its enclosed design also improves operator safety and protects the breaker in challenging environments.
With a 250 A rated current, 4-pole configuration and adjustable 50 mA to 500 mA earth leakage protection, the NM1TL-250/4/X1/T1 is ideal for industrial switchboards, manufacturing facilities, commercial buildings and critical power distribution systems.
The Chint NM1TL range combines the performance of a moulded case circuit breaker with integrated earth leakage monitoring, providing comprehensive protection for low-voltage electrical installations. Adjustable protection settings allow engineers to tailor the breaker to suit individual system requirements whilst maintaining dependable fault protection.
Whether installed within industrial facilities, commercial premises or infrastructure projects, the NM1TL-250/4/X1/T1 delivers long-term reliability, straightforward installation and dependable electrical safety.
| Current | 250 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Chint |
| Series | NM1TL |
| Model | NM1TL-250/4/X1/T1 |
| Product type | Enclosed Earth Leakage Circuit Breaker (ELCB) |
| Rated current | 250 A |
| Number of poles | 4 Pole |
| Earth leakage sensitivity | Adjustable 50 mA to 500 mA |
| Time delay | Adjustable 0.1 s, 0.3 s, 0.5 s and 1 s |
| Rated operational voltage | Up to 690 V AC |
| Frequency | 50 / 60 Hz |
| Protection functions | Earth leakage, overload and short circuit |
| Mounting type | Panel mounting |
| Standard | IEC/EN 60947-2 |
It provides overload, short circuit and earth leakage protection for commercial and industrial low-voltage electrical distribution systems.
The NM1TL-250/4/X1/T1 has a 250 A rated current.
The X1 version offers adjustable earth leakage sensitivity settings of 50 mA, 100 mA, 200 mA and 500 mA.
The T1 version provides adjustable trip delay settings of approximately 0.1, 0.3, 0.5 and 1 second to improve protection coordination.
It is commonly installed within industrial switchboards, commercial distribution panels and large electrical control systems requiring integrated earth leakage protection.
Chint NM1TL enclosed Earth Leakage Circuit Breakers provide reliable overload, short circuit and earth fault protection for demanding commercial and industrial power distribution systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...