LMI-B1 Mechanical Interlock Datasheet & Manual

LMI-B1 Mechanical Interlock

The CHINT LMI-B1 Mechanical Interlock ensures safe manual switching between two main power sources. It prevents simultaneous operation of dual circuits by mechanically interlocking connected breakers. Designed for use in residential, commercial, and industrial installations—such as homes, hotels, offices, and shopping centers—the LMI-B1 offers reliable, compact, and easy-to-install protection. With a 9 mm width, wide temperature range (–35°C to +70°C), and DIN-rail compatibility, it is ideal for low-voltage dual-supply systems

Need Support From Us?

Blog

Find expert perspectives on the trends and technologies driving your business.

View Now

Download Center

Download new and previously released documents including product document, solutions, cases, coporate report.

View Now

Reach out to us to receive more information, technical support, assistance with complaints and more.

Collapsed

Expand

FAQs

What is the purpose of the LMI-B1 Mechanical Interlock?

It ensures that two power sources cannot be used simultaneously, providing safe manual switching between circuits to prevent short-circuit or backfeed hazards.

Where can the LMI-B1 be applied?

It is suitable for residential and commercial buildings, hotels, business centers, and light industrial systems requiring dual power management.

How is the LMI-B1 installed?

It is mounted between two circuit breakers (NB1-63 series) using a DIN-rail system, with compact dimensions for quick integration inside low-voltage panels.

What are its environmental operating limits?

The interlock performs reliably from –35°C to +70°C, at altitudes up to 3000 m, and humidity up to 90% at 20°C.

Why choose the LMI-B1 model?

The LMI-B1 offers a simple and durable interlocking solution with compact 9 mm width, universal NB1 compatibility, and IEC-standard construction, ensuring safe and efficient manual changeover operation.

Please enter keywords to search

Choose your country & Language

Asia Pacific

Middle East & Africa

Europe

North America

Latin America

Choose your country & Language

Please enter keywords to search

LMI-B1 Mechanical Interlock

Product Information

Need Support From Us?

FAQs

LMI-B1 Mechanical Interlock

Product Information

Related Products

Need Support From Us?

FAQs