The FXM3 series molded case circuit breaker (MCCB) represents advanced power distribution technology designed for circuits with 50/60Hz, rated operating voltage up to AC 690V (or higher for certain models), and rated operating current up to 1250A. This versatile series is suitable for infrequent switching and motor starting applications in power distribution systems. Featuring breaking capacity levels from C (basic) to H (high breaking type), the FXM3 series offers Ics ratings from 10kA to 80kA depending on frame size and capacity level. The innovative design includes overload alarm and non-trip functionality, allowing the breaker to operate with 1.3 times rated current for 8 hours without tripping, ensuring power supply continuity. Available in 150, 250, 400, 630, 800, and 1250 amp frame sizes with 3 and 4 pole configurations, the FXM3 series provides flexible solutions for industrial, commercial, and utility applications requiring reliable circuit protection and
FXM3 Series Molded Case Circuit Breaker
Key Advantages
- Wide current range: 16A to 1250A covering diverse application requirements
- High voltage support: Up to AC 1140V for demanding applications
- Multiple breaking capacities: C, L, M, H levels from 10kA to 100kA
- Overload alarm non-trip: Can operate at 1.3× rated current for 8 hours
- Compact design: Small size, high breaking capacity, anti-vibration
- Isolation function: Safe isolation capability for maintenance
- Motor protection option: Specific models for motor applications
- Multiple pole options: 3P and 4P configurations available
- Rich accessories: Electric operation, rotating handle, auxiliary switches
- Multiple certifications: CCC, CE, CB, UL489 (FXM3-250 series)
- Wide temperature range: -35°C to +70°C operating
- Environmental compliance: Meets EU RoHS requirements
Basic Specifications
| Parameter | Specification | Details |
|---|---|---|
| Product Series | FXM3 | Molded Case Circuit Breaker (MCCB) |
| Frame Sizes | 150, 250, 400, 630, 800, 1250 | Amp frame sizes |
| Rated Current (In) | 16A ~ 1250A | Depending on frame size |
| Pole Configurations | 3P, 4P | 4P with N-pole forms A/B/C/D |
| Rated Voltage (Ue) | AC 415V, 690V, 800V, 1000V, 1140V | AC 50/60Hz |
| Breaking Capacity Levels | C, L, M, H | Basic, Standard, Higher, High breaking |
| Ics (Operating Breaking) | 10kA ~ 80kA | Depending on model |
| Icu (Ultimate Breaking) | 10kA ~ 100kA | Depending on model |
| Operating Temperature | -35°C to +70°C | Ambient temperature |
| Storage Temperature | -40°C to +75°C | Storage conditions |
| Altitude | ≤2500m | Derating required above 2500m |
Frame Sizes & Current Ratings
Breaking Capacity Levels
| Level | Description | Ics Range | Icu Range |
|---|---|---|---|
| C | Basic Type | 25-50kA | 35-70kA |
| L | Standard Type | 35-50kA | 50-70kA |
| M | Higher Breaking Type | 35-80kA | 70-100kA |
| H | High Breaking Type | 10-20kA | 10-20kA |
Applications
- ⚡ Power Distribution
- 🏭 Industrial Facilities
- 🏢 Commercial Buildings
- 🚂 Transportation
- 🔋 Energy Storage
- 🌊 Marine Applications
- 🎛️ Control Panels
Contact Information
Hangzhou Weltrus New Energy Technology Co., Ltd.
Block D, Ocean International Center
333 Yuanjian Street, Hangzhou
Zhejiang, China
Tel/WhatsApp: +86 13735502672
Email: [email protected]
Contact UsKey Features
- ✔ Overload alarm non-trip
- ✔ 1.3× current for 8 hours
- ✔ Isolation function
- ✔ Motor protection option
- ✔ Electric operation (P)
- ✔ Rotating handle (Z)
- ✔ Rich accessory options
Standards Compliant
- 📋 GB/T 14048.1
- 📋 GB/T 14048.2
- 📋 IEC 60947-1
- 📋 IEC 60947-2
- 🌿 EU RoHS Compliant
CONTACT
+86-13735502672
Adhering to the development philosophy of market-oriented, customer-centric, and supply based, we continuously promote technological innovation and product upgrades, and provide global users with higher quality, efficient, and environmentally friendly clean energy solutions.