CMTM1 Series Moulded Case Circuit Breaker — Reliable Protection for Modern Electrical Systems

Mutai Electric Group proudly presents the CMTM1 Series Moulded Case Circuit Breaker (MCCB) — a new generation of circuit breakers designed and manufactured with advanced international technology.

With a rated insulation voltage up to 1000V, the CMTM1 Series is suitable for AC 50Hz circuits with a rated operating voltage up to 690V and rated current from 10A to 1250A. It is ideal for infrequent switching and motor protection applications (CMTM1-800 and CMTM1-1250 models do not include motor protection).

Advanced Performance & Protection

The CMTM1 Series is equipped with overload, short-circuit, and under-voltage protection to ensure the safety of circuits and electrical equipment.
Key performance highlights include:

• High breaking capacity & short arcing distance for enhanced safety
• Compact structure & full range of internal and external accessories
• Rated impulse withstand voltage: 12kV
• Rated operational voltage: up to AC1000V
• Mechanical life up to 10,000 operations
• Electrical life up to 1,500 operations

Operating conditions are rigorously defined to ensure reliability — suitable for installation at altitudes below 2000m, ambient temperatures between -5℃ and +40℃, and relative humidity up to 90% under specific conditions.

Built for Stability and Durability

Engineered to withstand humid air, salt spray, oil mist, mold, and even nuclear industry environments, the CMTM1 Series guarantees stable operation in demanding conditions. The breaker’s pollution degree is rated Class 3, and its main circuit insulation category is Class III, providing superior safety assurance.

Mutai’s CMTM1 MCCBs are widely used in industrial distribution systems, commercial buildings, energy infrastructure, and equipment protection, delivering both performance and peace of mind.

Focus on Your Value

As a trusted manufacturer in the low-voltage electrical field, Mutai Electric Group remains committed to innovation, quality, and customer value. The launch of the CMTM1 Series reflects our continuous pursuit of safer, smarter, and more efficient electrical solutions.

Learn more at www.mutaiele.com