Chint NM8-IL-4P-125 genuine mechanical interlock for NM8-125 4-pole moulded case circuit breakers, preventing simultaneous operation of two breakers in changeover applications.
£100.47
The Chint NM8-IL-4P-125 is a genuine mechanical interlock accessory designed specifically for Chint NM8-125 4-pole moulded case circuit breakers (MCCBs). It mechanically links two compatible circuit breakers to prevent both devices from being switched on simultaneously, providing a safe and dependable solution for changeover and dual power supply applications.
As part of the Chint NM8 MCCB accessory range, the NM8-IL-4P-125 enhances operational safety by ensuring only one breaker can remain closed at any time. This makes it ideal for standby power systems, generator changeover installations and applications where two independent power sources must never be connected together.
Manufactured to Chint's high quality standards, this genuine accessory offers straightforward installation, dependable mechanical operation and full compatibility with NM8-125 4-pole MCCBs, making it suitable for industrial, commercial and infrastructure power distribution systems.
Mechanical interlocks provide an effective safety solution by preventing two connected moulded case circuit breakers from closing at the same time. This eliminates the possibility of unintentionally paralleling separate power sources and helps maintain safe operation of electrical distribution systems.
The Chint NM8-IL-4P-125 is ideal for generator transfer systems, standby power installations and other applications where safe mechanical interlocking between two NM8 MCCBs is required.
| Phase | Three Phase |
|---|---|
| Manufacturer | Chint |
| Series | NM8 MCCB Accessories |
| Model | NM8-IL-4P-125 |
| Product type | Mechanical interlock |
| Accessory type | MCCB interlock assembly |
| Compatible breaker frame | NM8-125 |
| Compatible poles | 4-pole |
| Application | Mechanical interlocking of two MCCBs |
| Mounting | Direct-fit accessory |
| Installation | Electrical distribution panels and switchboards |
| Suitable for | Mains/generator and dual power changeover systems |
It is a mechanical interlock that prevents two compatible Chint NM8-125 4-pole moulded case circuit breakers from being switched on at the same time.
The NM8-IL-4P-125 is designed specifically for Chint NM8-125 4-pole MCCBs.
A mechanical interlock prevents simultaneous operation of two breakers, improving safety during mains and generator or dual power source changeover.
Yes. The NM8-IL-4P-125 is a genuine Chint accessory designed specifically for the NM8 MCCB range.
It is commonly installed in changeover panels, switchboards, standby power systems and industrial power distribution equipment.
Chint NM8 accessories are trusted by panel builders, OEM manufacturers and electrical contractors to deliver safe operation, dependable performance and professional installation quality in low-voltage 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...