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As a dedicated manufacturer of electrical protection equipment, Jinhua Dika Electrical Equipment is committed to delivering reliable and precise solutions for critical infrastructure. Our 40A 4-Pole Molded Case Circuit Breaker (MCCB) is engineered specifically for the demanding environments of data centers and server rooms, where power stability and equipment safety are paramount. This device serves as a crucial line of defense in your electrical distribution system, offering robust overcurrent and short-circuit protection to prevent costly downtime and equipment damage. By choosing our MCCB, you invest in a component designed for performance, durability, and the specific electrical loads of modern IT infrastructure.
This MCCB is designed to interrupt fault currents safely and reliably, isolating faulty circuits to protect upstream equipment and ensure the continuity of your critical operations. We understand that data centers require components that offer not just protection, but also predictability and ease of integration into complex power distribution units (PDUs) and switchgear. Our product is developed with these considerations in mind, providing a balance of high performance and practical installation features.
Core Features & Technical Advantages:
- Precise Protection for Balanced Loads: The 4-pole design is essential for 3-phase systems with a neutral conductor, commonly used in data centers. It ensures all live conductors and the neutral are disconnected simultaneously during a fault or maintenance, providing complete isolation and enhanced safety, especially where sensitive electronic equipment is present.
- Robust Construction for Longevity: Housed in a high-strength, arc-resistant molded case, this MCCB is built to withstand the thermal and mechanical stresses of interrupting high fault currents. The materials are selected for excellent insulating properties and resistance to environmental factors that may be present in server room environments.
- Flexible Trip Unit Options: Available with thermal-magnetic or advanced electronic trip units. The thermal-magnetic version provides reliable protection against overloads and short-circuits. The electronic trip unit offers adjustable settings for long-time, short-time, instantaneous, and ground-fault protection, allowing for precise coordination with other protective devices in your electrical network.
- Enhanced Safety and Monitoring: Features may include a clear ON/OFF indicator, a trip indication flag, and provisions for padlocking in the OFF position for safe maintenance. Optional auxiliary contacts and alarm switches can be integrated to provide remote status signals to your building management or SCADA systems.
- Streamlined Installation and Maintenance: Designed for easy mounting on standard DIN rails or panel boards. The terminals are accessible and designed to accommodate a range of cable sizes, simplifying the wiring process and ensuring secure connections.
Technical Specifications Table:
| Parameter | Specification |
| Rated Operational Current (In) | 40 A |
| Number of Poles | 4 (3 Phase + Neutral) |
| Rated Insulation Voltage (Ui) | 800 V AC |
| Rated Operational Voltage (Ue) | 400/415 V AC, 50/60 Hz |
| Ultimate Breaking Capacity (Icu) | Configurable (e.g., 25 kA, 36 kA, 50 kA @ 415V AC) |
| Trip Unit Type | Thermal-Magnetic or Electronic (Micrologic) |
| Electrical Durability | Up to 10,000 operations (mechanical) |
| Mounting | Fixed or Plug-in, DIN Rail or Panel Mount |
| Standards | IEC/EN 60947-2, GB 14048.2 |
Benefits for Your Data Center Operation:
- Minimized Downtime Risk: Reliable fault interruption protects servers, storage, and networking equipment from damage due to electrical faults, directly contributing to higher system availability.
- Improved Personnel Safety: Complete 4-pole isolation reduces risks for technicians during servicing or in the event of a fault, ensuring a safer working environment.
- System Coordination: With adjustable trip settings (on electronic models), you can achieve selective coordination. This means only the breaker closest to a fault trips, isolating the problem while keeping the rest of your data center online.
- Scalability and Flexibility: The compact design and standardized mounting allow for easy integration into new or existing power distribution layouts, supporting your facility's growth and reconfiguration needs.
Frequently Asked Questions (FAQ)
Q1: Why is a 4-pole MCCB necessary for a data center instead of a 3-pole one?
A: Data center power distribution often uses a 3-phase system with a neutral. A 4-pole breaker disconnects all three phases and the neutral simultaneously. This provides complete isolation, which is critical for safety during maintenance and ensures no residual voltage is present on the neutral, protecting sensitive IT equipment and personnel.
Q2: What is the difference between thermal-magnetic and electronic trip units for this application?
A: A thermal-magnetic unit offers fixed protection curves for overload (thermal) and short-circuit (magnetic) and is a cost-effective, reliable solution. An electronic trip unit provides adjustable protection settings (L, S, I, G), allowing for precise coordination with other breakers in the system, which is highly beneficial for complex data center power schemes to maximize uptime.
Q3: Can this 40A MCCB be used as a main incoming breaker for a server rack PDU?
A: It can be suitable as a branch feeder or sub-distribution breaker for a rack or group of racks, depending on the total load calculation. For a main incoming service, the required current rating and breaking capacity would need to be assessed based on the total facility or section load.
Q4: How do I determine the required breaking capacity (Icu) for my installation?
A: The required breaking capacity depends on the prospective short-circuit current at the point of installation, which is calculated from your transformer size and impedance, and cable characteristics. An electrical engineer or designer should perform this calculation to specify the correct Icu rating (e.g., 25kA, 36kA, 50kA).
Q5: Are accessories like auxiliary contacts or shunt trips available?
A: Yes, such accessories are typically available as optional add-ons. Auxiliary contacts provide remote signaling of the breaker's status (ON/OFF/TRIPPED), while a shunt trip allows for remote electrical tripping of the breaker, which can be useful in integrated control systems.
Q6: What are the typical delivery lead times for this product?
A: As a manufacturer, we maintain stock for common configurations. Lead times can vary based on specific requirements like trip unit type or special accessories. Standard models often have shorter lead times, while fully customized units may require additional production time.
Q7: Is this MCCB suitable for use in other applications besides data centers?
A: Absolutely. While optimized for IT environments, this 40A 4P MCCB is also well-suited for other commercial and industrial applications requiring 3-phase+N protection, such as industrial control panels, commercial building distribution boards, and manufacturing equipment power supplies.
Q8: Do you provide technical support for system integration and selection?
A: We offer technical documentation and support to assist with product selection and answer integration questions. For complex system design involving coordination studies, we recommend consulting with a qualified electrical engineer.
Jinhua Dika Electrical Equipment combines manufacturing expertise with a commitment to international standards, serving a global market from North America and Europe to Southeast Asia and Africa. Our experience in exporting to diverse regions means our products are designed to meet a wide range of technical requirements and installation practices. When you source this 40A 4-Pole MCCB, you are not just purchasing a component; you are gaining a reliable partner focused on the protection and efficiency of your critical power infrastructure. We encourage you to contact us with your specific project details to explore how this breaker can be integrated into your data center's design, ensuring optimal protection and operational resilience.
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