The HZM5 series plastic enclosure circuit breaker is a compact protection device specifically designed for large-scale photovoltaic power generation and large-scale energy storage systems. This series of circuit breakers supports two medium-voltage levels, AC800V and AC1140V, and can precisely match the output voltage requirements of photovoltaic string inverters, energy storage converters (PCS), and other equipment. The frame current range is 320A to 630A, and in AC800V conditions, the short-circuit breaking capacity is as high as 50kA, enabling rapid and reliable circuit disconnection during system failures. This product adopts thermal-magnetic trip protection, has a compact structure, is flexible to install, and is suitable for scenarios where the distribution space of new energy power stations is limited. It provides an economical and reliable selective protection for the low-voltage side of the system.
Application scenario
Large-scale photovoltaic power stations, energy storage systems, onshore/offshore wind farms, new energy charging stations, data centers
Product features
- Precise voltage matching for new energy systems: Specifically designed for AC800V and AC1140V medium-voltage environments, suitable for the grid connection voltage levels of current mainstream photovoltaic and energy storage systems.
- High-breakdown compact design: Under 800V, the Icu reaches 50kA. It has strong breaking performance and a compact structure, making it suitable for installation scenarios such as new energy prefabricated cabins and wall-mounted electrical boxes.
- Thermal-magnetic protection is stable and reliable: It adopts the thermal-magnetic overcurrent trip method, featuring both long-time delay for overload protection and instantaneous protection for short-circuit situations. This design is suitable for the frequent load fluctuations characteristic of new energy power sources.
- Installation method is flexible and easy: It supports various installation postures, facilitating integration into compact distribution cabinets and modular electrical units of new energy systems.
- High applicability: The entire series covers a current range from 320A to 630A, which can meet the protection requirements of inverters and energy storage circuits of different capacities.
- Compliant with the life cycle of the new energy system: The mechanical life is up to 6,000 times, meeting the operational reliability requirements for the long-term operation and maintenance period of the new energy system.
| Model number | HZM5-320HU | HZM5-400HU | HZM5-630HU | |
|---|---|---|---|---|
| Frame rating rated current Inm(A) | 320 | 400 | 630 | |
| Rated operating current ln(A) | 63/80/100/ 125/140/160/180/ 200/225/250/ 300/320 | 225/250/320/350/400 | 400/500/630 | |
| Rated operating voltage Ue(V) | AC800、AC1140 | |||
| Rated insulation voltageUi(V) | 1500 | |||
| Rated impulse withstand voltage Uimp(kV) | 8 | |||
| Frequency(Hz) | 50/60 | |||
| Infinity | 3P | |||
| Rated short-circuit breaking capacity (rms value)Icu(kA) | AC800V | 50 | 50 | 50 |
| AC1140V | 20 | 20 | 20 | |
| Rated short-circuit breaking capacity (effective value) Ics(kA) | AC800V | 50 | 65 | 65 |
| AC1140V | 20 | 20 | 20 | |
| Total disconnection time (without additional delay)(ms) | ≤30 | |||
| Closing time (ms) | ≤60 | |||
| Operational performance | Electric life (cycles) | 1000 | 1000 | 1000 |
| Mechanical life (times) | 6000 | 4000 | 4000 | |
| Overcurrent trip mode | Thermomagnetic type | |||
HZM5 Series - Dimensions and Installation Diagram
