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FRAME
WIRING METHOD
OPERATION METHOD
APPLICABLE STANDARDS
GB14048.2、IEC60947.2
The ASKM2 thermal-magnetic molded case circuit breaker (MCCB) is a cutting-edge electrical protection device developed by Aisikai using internationally advanced technology. Designed for reliable performance in low-voltage power distribution systems, this MCCB boasts a rated insulation voltage of 1000V and is suitable for AC 50/60Hz distribution networks with a rated voltage of 690V or lower, covering a rated current range of 10A to 1250A.
Beyond its core function of distributing electrical power, the ASKM2 MCCB provides comprehensive protection against critical electrical faults, including overload, short circuits, and undervoltage. It also supports infrequent line switching and motor starting operations, making it a versatile solution for diverse power systems. Compliant with GB14048.2 and IEC60947.2 standards, this breaker combines compact design with high performance, ensuring safety and efficiency in various industrial and commercial settings.
The ASKM2 MCCB features a small volume that saves installation space, making it ideal for systems with limited room. Despite its compact size, it delivers exceptional breaking capacity: depending on the model, the ultimate short-circuit breaking capacity (Icu) reaches up to 75kA at AC 400V/415V, while the service short-circuit breaking capacity (Ics) can reach 75kA, ensuring safe interruption of high fault currents.
With an arc distance of ≤50mm (for 125A-250A models) and ≤100mm (for 630A-1250A models), the breaker minimizes arc propagation, enhancing operational safety. It is also vibration resistant, making it suitable for harsh environments where stability under mechanical stress is critical.
Engineered with a reasonable internal structure, the ASKM2 MCCB ensures consistent performance even in long-term use. Its user-friendly design simplifies installation, while a wide range of optional accessories allows customization to meet the technical requirements of different power distribution systems. Additionally, the entire series includes an isolation function, adding an extra layer of safety during maintenance or system adjustments.
The ASKM2 thermal-magnetic MCCB is widely applicable across multiple industries and scenarios, serving as a critical component in ensuring electrical system stability:
· Power Distribution Networks: Integral to low-voltage grids, it regulates power flow and protects circuits from overloads and short circuits, preventing equipment damage and downtime.
· Industrial Facilities: Suitable for factories and manufacturing plants, it supports infrequent motor starting and line switching, adapting to dynamic production demands.
· Commercial Buildings: Used in office complexes, shopping malls, and hospitals to safeguard lighting, HVAC, and other electrical systems, ensuring uninterrupted operation.
· Specialized Sectors: Ideal for construction sites, data centers, mining operations, and new energy systems (e.g., solar or wind power installations), where reliable electrical protection is vital for operational efficiency and safety.
The ASKM2 supports four wiring configurations to accommodate diverse installation needs: front panel wiring, rear panel extended wiring, plug-in front panel wiring, and plug-in rear panel wiring. This flexibility ensures compatibility with various system layouts.
Thermal-magnetic MCCBs, like the ASKM2, operate based on thermal and electromagnetic effects, making them ideal for general protection in standard applications. In contrast, electronic MCCBs offer more precise protection settings and advanced features (e.g., adjustable trip curves) for complex or high-precision systems.
It delivers three key protection functions: overload protection (via thermal elements), short-circuit protection (via electromagnetic components), and undervoltage protection, ensuring comprehensive safeguarding of circuits and connected equipment.
Breaking capacity refers to the maximum short-circuit current an MCCB can safely interrupt, measured in kA. For the ASKM2, this ranges from 15kA to 75kA (depending on the model). Selecting a breaker with a breaking capacity equal to or greater than the potential fault current in the system is critical to prevent damage during short-circuit events.
TECHNICAL DATASHEET OF ASKM2 THERMOMAGNETIC NORMAL PROTECTION MOLDED CASE CIRCUIT BREAKER
| Model | ASKM2-125 | ASKM2-160 | ASKM2-250 | ASKM2-630 | ASKM2-800 | ASKM2-1250 | |||||||||||||
| Frame rating current Inm(AF) | 125 | 160 | 250 | 630 | 800 | 1250 | |||||||||||||
| No.of poles | 3P/4P | 3P/4P | 3P/4P | 3P/4P | 3P/4P | 3P/4P | |||||||||||||
| Rated current In(A) | 10 16 20 25 32 40 50 63 80 100 125 | 10 16 20 25 32 40 50 63 80 100 125 140 160 | 125 140 160 180 200 225 250 | 250 315 350 400 500 630 | 500 630 700 800 | 800 1000 1250 | |||||||||||||
| Rated insulation voltage Ui(V) | 800V | ||||||||||||||||||
| Rated impulse withstand voltage Uimp(V) | 8000V | ||||||||||||||||||
| Rated operational voltage Ue(V) | AC400V/415V | ||||||||||||||||||
| Arc distance(mm) | ≯50(0)** | ≯50(0)** | ≯50(0)** | ≯100(0)** | ≯100(0)** | ≯100(0)** | |||||||||||||
| Breaking capacity level | C | L | M | C | L | M | C | L | M | C | L | M | L | M | H | L | M | H | |
| Ultimate short-circuit breaking capacity Icu(kA) | AC400V/415V | 15 | 25 | 35 | 25 | 35 | 50 | 25 | 35 | 50 | 35 | 50 | 75 | 35 | 50 | 75 | 25 | 35 | 75 |
| Service short-circuit breaking capacity Ics(kA) | AC400V/415V | 8 | 18 | 25 | 18 | 25 | 35 | 18 | 25 | 35 | 25 | 35 | 75 | 25 | 35 | 75 | 18 | 25 | 75 |
| Use category | A | A | A | A | A | A | |||||||||||||
| Electrical service life(times of operation) | AC400V/415V | 6000 | 3000 | 3000 | 2000 | 1500 | 1500 | ||||||||||||
| Mechanical service life(times of operation) | without maintenance | 9000 | 7000 | 7000 | 4000 | 4000 | 4000 | ||||||||||||
| with maintenance | 20000 | 20000 | 20000 | 20000 | 20000 | 20000 | |||||||||||||
| Outline dimensions (mm) | W(3P/4P) | 75/100 | 90/120 | 105/140 | 140/184 | 210/280 | 210/280 | ||||||||||||
| L | 130 | 155 | 165 | 258 | 276 | 275 | |||||||||||||
| H(includinghandle) | 76 | 76.5 | 77 | 113 | 114 | 105 | |||||||||||||
