DROSS DC MCB 125A 1 Pole – Solar DC Circuit Breaker
DROSS DC MCB 125A 1 Pole – Solar DC Circuit Breaker
DROSS DC MCB 125A 1 Pole is designed to provide reliable protection for high-current DC electrical circuits against overload and short-circuit conditions. It is suitable for solar PV systems, battery installations, inverters, DC distribution boxes (DCDB) and other DC electrical applications.
The 125A current rating makes it suitable for high-current DC applications, while its 1 Pole design provides compact and efficient circuit protection. The DIN rail mounting design allows convenient installation inside electrical and solar distribution boxes.
Key Features:
• Brand: DROSS
• Rated Current: 125A
• Rated Voltage: Up to 1000V DC
• Number of Poles: 1 Pole (1P)
• Designed for DC Applications
• Overload Protection
• Short-Circuit Protection
• DIN Rail Mounting
• Easy ON/OFF Operation
• Compact and Durable Design
• Suitable for Solar PV Systems
• Suitable for DCDB Boxes
• Suitable for Battery & Inverter Systems
Compatibility: which system does it fit?
- Voltage: DC systems up to 1000V DC. The maximum open-circuit voltage (Voc) of your panel string should stay below 1000V.
- Current: up to 125A. Choose a rating about 125% of your normal circuit current, and never above your cable's rating.
- Best for: high-current DC circuits such as battery-to-inverter connections in 12V / 24V / 48V systems, and DCDB boxes.
- 1 Pole: switches off one DC line. For both lines together, use two breakers or a 2 Pole breaker.
- Mounting: standard DIN rail.
Solar installer guide: which protection to choose?
| Where in your system | What to use |
|---|---|
| Each panel string, before the combiner box or DCDB | DROSS ZYPV-32X fuse holder (1000V DC, 32A) with a 10×38mm PV fuse link |
| Switching off or isolating a DC circuit (string, DCDB, inverter input) | DROSS DC MCB 63A, 1 Pole or 2 Pole (600V DC) |
| Battery to inverter circuit (higher current) | DROSS DC MCB 125A, 1 Pole (1000V DC) |
| Surge and lightning protection at the DCDB or inverter DC input | DROSS DC SPD-40 (Type 2, 600V DC) |
Simple rules: keep your system's maximum DC voltage below the device's voltage rating. Choose the DC MCB current rating about 125% of the normal circuit current (not above your cable's rating), and choose string fuses as per your panel datasheet. Not sure? WhatsApp us your panel wattage, number of panels in series and inverter or battery voltage on +91 99928 08001 and we will suggest the right protection. Installation should be done by a qualified electrician.