Wholesale MT-M1 Digital Electronic MCCB, 100-800A, 3/4P, 50kA, Microprocessor-Controlled Circuit Breaker

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MT-M1 Digital Electronic MCCB, 100-800A, 3/4P, 50kA, Microprocessor-Controlled Circuit Breaker

Description:

The MT-M1 Digital Electronic MCCB represents the next generation of circuit protection, integrating precision microprocessor control with robust molded case construction. Designed for AC 50Hz systems, this breaker provides fully programmable protection against overload, short-circuit, and ground fault conditions, while delivering real-time monitoring and intelligent fault management.
Encased in a high-strength thermoset housing, the breaker combines compact dimensions with outstanding mechanical durability. Its sophisticated electronics allow operators to monitor current, voltage, energy consumption, and fault history, enabling proactive maintenance and enhanced system reliability.

Applications:

The digital MCCB is ideal for systems requiring advanced protection, real-time monitoring, and data-driven energy management:
Critical Power Infrastructure – Data centers, hospital backup circuits, airport power systems, financial institution power protection.
 Industrial Automation – Precision protection for motor control centers, production lines, and complex machinery.
Energy Management – Building management systems, renewable energy installations, smart grids, and power monitoring centers.
Specialized Applications – Transformer protection, generator backup systems, main load center breakers, and networked circuit management.
Its programmable settings enable seamless coordination with downstream devices, minimizing downtime and maximizing equipment longevity, while communication interfaces allow integration into modern intelligent power systems.

  • Working Principle
  • Quality Explanation
  • Product Features
  • Installation & Commissioning
  • Packaging & Shipping
  • Project Cases
  • Product Selection Guide
  • MCCB

Working Principle: When the current passes through the electromagnetic transformer, the current transformer transmits the current signal to the circuit board, which judges whether it is a fault current. If it is, the mechanism is directly tripped.

  • Product Debugging
  • MCCB
  • MCCB Instantaneous Test
  • MCCB Temperature Rise Test Bench
  • MCCB Temperature Rise Test Bench
  • MCCB Temperature Rise Test Bench
  • MCCB Temperature Rise Test Bench
  • MCCB Assemble
  • MCCB Assemble
  • MCCB Temperature Rise Test Bench

To ensure transportation safety, our electrical products are exported in reinforced wooden crates. The crates undergo heat treatment and bear the ISPM-15 mark, enabling swift customs clearance. The raised base design facilitates forklift operation, while internal shock-absorbing fastening ensures the products arrive intact. All exterior crates are clearly labeled and comply with international logistics standards.

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Type pole External Dimensions Installation Dimensions (mm) Rear Panel Connection Dimensions (mm)
L L1 W H H1 H2 a b ∅d a1 b1 d1 H3 H4
MTM1-63L 3 135 21 76 89.5 72 18 25 117 3.5 25 117 18 52 75
4 103
MTM1-63M 3 76 99 81 28
4 103
MTM1-125L 2 150 51 65 87 68 24 129 4.5 30 132 22 65 100
3 92 30
4 121
MTM1-125M,H 2 65 103.5 85 23
3 92 30
4 121
MTM1-250L 2 164 64 75 108 87 24 126 5.5 35 144 24 70 110
3 107 35
4 142
MTM1-250M,H 2 75 124.5 104 24
3 107 35
4 142
MTM1-400M,H 3 257 105 150 153 106 38 44 194 7 48 224 32 48.5 108.5
4 197 Left 44 Right 50
MTM1-630M,H 3 270 105 182 157 111 43 58 200 7 58 234 40 70 120
4 240
MTM1-800M,H 3 280 105 210 158 116 42 70 243 7 70 243 48 75 125
4 280

Type MTM1-63 MTM1-125 MTM1-250
lnmFrameInm(A) 63 125 250
Rated current(A) 10、16、20、25、32、40、50、63 16、20、25、32、40、50、63、80、100、125 100、125、140、160、180、200、225、250
Rated voltage Ue(V) AC400 AC400 AC400 / AC690 AC400 AC400 AC400 / AC690 AC400
Rated insulation voltageUi(V) AC800 AC800 AC800
Number of poles 3、4 3、4 2、3、4 2、3、4 2、3、4 2、3、4 2、3、4 2、3、4
IcukA)
Rated limit short-circuit
breaking capacity level
L M S L M S L M
IcukA)
Rated limit short-circuit
breaking capacity
12 35 12 35 50 12 35 50
Ics(kA)
Rated short-circuit breaking capacity
6 22 6 22 35 6 22 35
Ratedlimitshort circuit
breaking capacity
4500 3000 2500
Operation life(cycle) 8500 7000 6500
Arcing distance (mm) 0、< 50 0、< 50 < 50
Dimensions

Installation size

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Manufacturing Expert
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd. is a technology-driven enterprise specializing in the research, development, and manufacturing of low-voltage and medium-voltage circuit breakers. China Suppliers of MT-M1 Digital Electronic MCCB, 100-800A, 3/4P, 50kA, Microprocessor-Controlled Circuit Breaker. Leveraging Liushi's comprehensive electrical industry chain and local advantages, we provide reliable and safe electrical protection products along with customized solutions for global industrial, commercial, and residential power distribution systems. We are committed to becoming a trusted electrical protection partner for global customers through professional engineering capabilities, consistent manufacturing quality, and flexible customization services.
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