JULAN JLB67-125DC DC MCB 2P 125A 1000V – High Breaking Solar & Battery Circuit Breaker
JULAN JLB67-125DC is a high-current 125A DC MCB rated 1000V DC with 10kA breaking capacity. This double-pole breaker gives dependable overload and short-circuit protection for solar PV arrays, battery banks and hybrid inverters.

Why use a DC MCB?
Solar and battery systems carry DC current, which forms a strong, steady arc when broken. A DC-rated breaker such as the JLB67-125DC is designed to break this arc safely and protect your expensive inverter and batteries.
Key Features
- Rated current 125A
- Rated voltage up to 1000V DC
- 10kA high breaking capacity
- C-curve trip characteristic
- Double-pole (2P) protection
- Certificates: CE, IEC, CB, CCC, TÜV, SAA
- Standard 35mm DIN-rail mounting
Applications
- Solar PV strings and combiner boxes
- Battery bank to inverter connection
- Hybrid / off-grid solar systems
- DC distribution and industrial panels

Installation tips
- Switch the system OFF and cover the solar panels before wiring.
- Follow the + and − marks printed on the breaker — DC breakers are polarity-sensitive.
- Use cable of the right size for the current and tighten terminals firmly.
- Mount on a standard 35mm DIN rail inside a proper DC distribution box.
- If you are not sure, get a qualified electrician to install it.

What's in the box
- 1 × JULAN 125A DC MCB 1000V (JLB67-125DC)
Frequently Asked Questions
Is JULAN a good brand?
JULAN breakers carry CE, IEC, TÜV and CCC certificates and are widely used in solar installations.
Can I use it between battery and inverter?
Yes. 125A rating makes it a good choice for high-current battery lines.
Is it suitable for 1000V solar strings?
Yes, it is rated up to 1000V DC.
What is C-curve?
C-curve trips quickly on short circuit but tolerates normal start-up surges.
Buy JULAN 125A DC MCB 1000V (JLB67-125DC) in Bangladesh
Order the original JULAN 125A DC MCB 1000V (JLB67-125DC) from PB SHOP BD with cash on delivery all over Bangladesh, fast delivery inside Dhaka and a 1-month replacement warranty (terms & conditions apply). Call or WhatsApp us for expert advice before you buy.