Mechanical Interlock LMI-B1 Datasheet & Manual

Mechanical Interlock LMI-B1

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.

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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.

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Mechanical Interlock LMI-B1

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