

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.