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1. High Breaking Capacity for Reliable Fault Isolation
With a rated ultimate short-circuit breaking capacity (Icu) of 35kA, this MCCB can reliably interrupt massive fault currents caused by severe short circuits or equipment failures. Its enhanced arc extinguishing system quickly extinguishes electrical arcs within milliseconds. Crucially, the service breaking capacity (Ics) reaches 25kA, which allows the breaker to be safely reused after clearing the fault. This ensures unmatched reliability for critical industrial infrastructures, significantly reducing unplanned production downtime and costly equipment replacements.
2. Superior Insulation & Dielectric Strength
Engineered for extreme industrial safety, this MCCB features a rated insulation voltage (Ui) of 800V and a rated impulse withstand voltage (Uimp) of 8kV. The high-grade V0 flame-retardant thermoplastic housing provides exceptional resistance to electrical tracking and thermal shock. This superior dielectric performance guarantees absolute insulation reliability, preventing arc flashovers even in humid, dusty, or high-vibration environments, thereby ensuring the long-term safety of both grid equipment and operating personnel.
3. Accurate Thermal-Magnetic Trip Characteristics
The breaker is equipped with a precise dual-action thermal-magnetic trip unit. The thermal bimetal component provides an inverse-time delay against persistent overloads (rated current 250A). Once the current exceeds the preset instantaneous trip threshold of 10 times the rated current (10In), the electromagnetic coil triggers an instantaneous protection mechanism. This accurate coordination ensures that cables, motors, and distribution transformers are protected against both overcurrent and catastrophic short-circuit faults, maintaining power quality stability.
4. Standardized Modular Design with Visual Status Indicator
The compact 3-pole modular structure is designed for standard industrial panels, enabling effortless screw-mounting installation. The robust silver-plated copper terminals offer low contact resistance and high conductivity. The clear "ON/OFF" toggle handle and a visible red fault indicator light provide intuitive operational status feedback. Maintenance engineers can immediately identify whether the breaker is manually opened or has automatically tripped due to a fault, allowing for quick troubleshooting and safe power restoration.
| Type | Rated current (A) | Polenum-ber | Ratedinsui-atingvolt-age(V) | Rated operat-ingvolt-age(V) | Arcingover distance(mm) | Ultimate short circuit breaking capacity(KA) | Servies short circuit breaking capacity (KA) | Operation performanceance | Utiliza-tioncat-egory | ||
| Load | Unload | ||||||||||
| HBM1-63L | (6),1016,2025 ,3240,5063 | 3, 4 | 500V | 400V | 0 | 25 | 18 | 1500 | 8500 | A | |
| HBM1-63M | 0 | 50 | 35 | ||||||||
| HBM1-100L | (10),1620,2532,4050,6380,100 | 800V | 0(≤50) | 35 | 22 | ||||||
| HBM1-100M | 0(≤50) | 50 | 35 | ||||||||
| HBM1-100H | 0(≤50) | 85 | 50 | 1000 | 7000 | ||||||
| HBM1-225L | 100,125160,180200,225 | ≤50 | 35 | 22 | |||||||
| HBM1-225M | ≤50 | 50 | 35 | ||||||||
| HBM1-225H | ≤50 | 85 | 50 | 1000 | 4000 | ||||||
| HBM1-400L | 225,250315,350400 | ≤50 | 50 | 35 | |||||||
| HBM1-400M | ≤100 | 65 | 42 | ||||||||
| HBM1-630L | 400,500630 | ≤100 | 50 | 35 | |||||||
| HBM1-630M | ≤100 | 65 | 42 | ||||||||
| HBM1-630H | ≤100 | 100 | 65 | ||||||||
| HBM1-800M | 630,700800 | 3 | ≤100 | 75 | 50 | ||||||
| HBM1-800H | ≤100 | 100 | 65 | ||||||||
| HBM1-1250M | 10,001,250 | ≤100 | 100 | 65 | |||||||
| HBM1-1250H | ≤100 | 125 | 75 | ||||||||
| HBM1-1600M | 1600 | ≤100 | 150 | 80 | |||||||
1. Industrial Main Distribution Boards
As the primary incoming circuit breaker in factory electrical rooms, this 250A MCCB manages the total electrical load for CNC machines, conveyor belts, and automated production lines. Its high 35kA breaking capacity effectively handles severe short-circuit current spikes stemming from industrial motor startups or transformer switching. By isolating faulty production zones instantly, it prevents fires and cascading blackouts across the entire manufacturing facility, ensuring operational safety and minimizing expensive production halts.
2. Commercial Complexes & High-Rise Buildings
In large-scale commercial buildings, the HBM1-250L is widely used as the main switch in the LV distribution panels for lighting, HVAC chillers, and elevator systems. Its 800V high insulation voltage ensures safe operation amidst voltage fluctuations. The reliable thermal protection prevents cable overheating when shopping malls or office towers experience peak daytime power usage, ensuring that tenant equipment and property management systems receive a stable and safe power supply.
3. Heavy Machinery & High-Power Motor Starters
This MCCB is ideal for directly protecting heavy electric motors used in water pumps, ventilation systems, and crushers in the mining or cement industries. Its instantaneous trip setting at 10In ensures it responds immediately to severe motor winding short circuits, preventing catastrophic failures and costly rewinding repairs. Furthermore, it serves as a reliable isolating switch, allowing technicians to safely lock out/tag out the motor during scheduled mechanical maintenance.
4. Transformer Secondary LV Incoming Panels
Positioned on the low-voltage side of a 10kV/0.4kV step-down transformer, this MCCB acts as the crucial protection hub between the utility grid and the internal distribution network. With a high Uimp of 8kV, it withstands transient switching surges and lightning impulse waves that may pass through the transformer. It ensures the transformer is safely disconnected from the downstream load if a massive fault occurs, protecting the expensive power transformer from destructive energy back-feeds.
5. EV Charging Stations & Energy Storage Systems
As the global transition to clean energy accelerates, this MCCB is deployed in the low-voltage AC output side of EV charging station power cabinets and BESS (Battery Energy Storage Systems). The 250A high-current carrying capacity supports super-fast DC charging clusters. With its high short-circuit resilience, it safeguards the sophisticated power electronics (inverters/rectifiers) inside charging piles from sudden grid disturbances, protecting expensive assets and securing a reliable charging experience for electric vehicles.
Q：Are you a trading company or factory?
A：We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.
Q：What certifications do you have?
A：Yes, we hold ISO, CE, and IEC certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.
Q：How long is your delivery time?
A：For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.
Q：What is the warranty time?
A：3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.
