DNRH8 Combined Switch in Energy Storage System
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Model
| Brand | Switchgear parts |
| Model NO. | DNRH8 Combined Switch in Energy Storage System |
| Rated voltage | DC 1500V |
| Rated normal current | 630A |
| Series | DNRH8 |
The DNRH8 Combined Switch is an all‑in‑one DC load‑switching and isolation solution, rated for up to 1500 VDC and 630 A. Designed to meet DC‑PV1, DC‑PV2, and DC‑21B utilization categories, it integrates main and pre‑charge relays into a single compact, IP67‑rated housing. Ideal for photovoltaic (PV) systems, battery energy storage systems (BESS), and industrial DC applications, the DNRH8 streamlines installation, reduces wiring errors, and delivers fast, reliable switching with undervoltage protection.
Voltage & Current: DC 1500 V, operational current 200 A–630 A.
Switching Capacity: Making/withstand capacity 15 kA (0.1 s) / 10 kA (1 s); conditional short‑circuit current 100 kA.
Arc Performance: Arc distance minimized; arcing time < 3 ms.
Protection Rating: IP67 (external); IP20 (internal).
Control Modes: Manual or 24 V remote control with auto/manual selection.
Undervoltage Module: Active/passive trip options (response < 0.5 s, 2 min power‑loss backup).
Optional Relay Module: JDQMK series integrates main/pre‑charge relays and resistors.
Environmental Tolerance: –40 °C to +80 °C (derating above +60 °C); altitude up to 5000 m with derating.
Durability: > 10,000 mechanical cycles; 400–2000 electrical cycles.
| Parameter | Value |
| Rated Operational Voltage (VDC) | 1500 V |
| Rated Operational Current (A) | 200, 225, 250, 275, 325, 400, 500, 630 |
| Rated Insulation Voltage (Ui) | 1500 V |
| Making Capacity (Icm) | 15 kA |
| Withstand Capacity (Icw) | 15 kA @0.1 s / 10 kA @1 s |
| Conditional ShortCircuit Current (Iq) | 100 kA |
| Electrical Lifespan (cycles) | 400–2000 |
| Mechanical Lifespan (cycles) | > 10 000 |
| Control Method | Manual / Remote (24 V) |
| Ambient Temperature | –40 °C to +80 °C (derate >60 °C) |
| Humidity | ≤ 50% @40 °C; ≤ 90% @20 °C |
| Altitude | ≤ 2000 m (derate to 5000 m) |
| Pollution Degree | III |
| Installation Category | IV (power), III (control) |
| Ingress Protection | IP20 (internal) / IP67 (external) |
| Optional Functions | Undervoltage Module, Relay Module |
