Key Technical Specifications
- Product Model: HLDB3600FT33W
- Manufacturer: CUTLER-HAMMER
- System Platform: Cutler-Hammer Power Distribution Systems
- Rated Voltage: 600V AC
- Rated Current: 3600A
- Frame Type: DL (Molded Case)
- Interrupting Capacity: 65kA at 480V AC
- Poles: 3
- Trip Unit Type: Thermal Magnetic
- Operating Mechanism: Manual, Electric
- Mounting Type: Chassis/Panel Mount
- Enclosure Rating: IP20 (Indoor use)
- Temperature Range: -10°C to 60°C
- Certifications: UL 489, CE
- Auxiliary Contacts: 1NO/1NC (Optional)
- Shunt Trip Function: Yes (Optional)
- Control Voltage: 120V AC (shunt trip)
- Weight: 45 kg (approx.)
Technical Architecture & Functional Positioning
System Role:
The HLDB3600FT33W is designed for power protection in high current industrial systems, serving as a molded case circuit breaker. Positioned within the power distribution layer, it plays a critical role in preventing overcurrent conditions, protecting critical equipment from short circuits, and ensuring operational safety. This breaker is typically used in power panels, motor control centers, and large-scale distribution circuits.
Core Technology:
This circuit breaker utilizes a thermal magnetic trip unit, combining thermal protection against sustained overcurrents and magnetic protection for instantaneous fault currents. The thermal mechanism responds to prolonged overcurrent conditions, while the magnetic mechanism provides fast response to short circuits. The interrupting capacity of 65kA at 480V AC allows it to clear high fault currents safely, preventing damage to equipment and ensuring safety for the connected electrical infrastructure.
Engineering Value:
The HLDB3600FT33W provides reliable and fast protection for industrial electrical systems. The high interrupting capacity is crucial for protecting circuits against large short-circuit events, while the thermal magnetic trip unit ensures the breaker responds to both sustained and instantaneous faults. The inclusion of an optional shunt trip function and auxiliary contacts increases the flexibility of the system, allowing for remote control and integration with automated fault detection systems.
Typical Application Scenarios:
- Used in industrial power distribution systems for high-voltage motor protection, preventing overcurrent and short-circuit damage.
- Applied in motor control centers (MCCs) for protecting large motors and other critical components.
- Integrated into HVAC systems to protect compressors and large HVAC units from electrical faults.
- Serves as a central protection element in transformer distribution boards in power substations.
- Used in electrical substations for overcurrent protection and fault isolation, ensuring stable and safe operation of the electrical grid.
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