TRANSFORMERS & ELECTRICAL COMPONENTS
Equipment assembly
Coordinate the switching or protective device with the panel drawing and load schedule.
Panel & Distribution Components
Series reference image. Appearance, terminals and included accessories vary by configuration. Manufacturer image source ↗
03 / Panel & Distribution Components
Sieyuan SYM6Z DC Molded-case Circuit Breakers
DC protective switching for PV, energy-storage and DC distribution panels. This series is selected from the DC system voltage, fault level and protection coordination.
- Brand
- Sieyuan
- Manufacturer
- Sieyuan
- Series / range
- SYM6Z series
- Supply
- Component sourcing on enquiry
- Document reference
- Sieyuan official English SYM6Z selection data
- Series
- SYM6Z; full frame/trip reference selected for the circuit
- Rated operating voltage
- Up to 1500 V DC
- Current choices listed
- 250 / 320 / 400 / 500 A
Technical data & selection
Series selection
| Parameter | Reference data |
|---|---|
| Series | SYM6Z; full frame/trip reference selected for the circuit |
| Rated operating voltage | Up to 1500 V DC |
| Current choices listed | 250 / 320 / 400 / 500 A |
| Pole arrangement | 2-pole DC construction |
| Impulse withstand Uimp | 12 kV |
| Icu at 1500 V DC | 30 kA, time constant τ = 2 ms |
| Ics at 1500 V DC | 25 kA, time constant τ = 2 ms |
| Icu / Ics at 1000 V DC | 50 kA / 50 kA |
The 50 kA figure applies at 1000 V DC, not 1500 V DC. Confirm polarity/terminal wiring, grounding arrangement, time constant, trip settings, isolation duty and accessories with the exact order drawing. A DC rating must not be treated as an AC rating.
Application & integration
Maintenance procurement
Use the full nameplate code and installed accessory list to make a precise replacement enquiry.
Manufacturer documents
Use the document for the complete order reference and delivered revision. Manufacturer links open the original source.
Prepare your enquiry
- Full order code and any existing nameplate or circuit schedule.
- Circuit voltage, load current, utilisation category and prospective fault level.
- Coil supply or trip characteristic; poles, auxiliary contacts and accessories.
- Coordination with upstream/downstream devices, installation outline and quantity.
A nameplate photograph or equipment list is enough to start. Mingkong provides component sourcing on enquiry; the offered brand, complete code, documentation and delivery terms are confirmed in the quotation.
Plan your enquiry
Use these guides to prepare the information for equipment selection and quotation.