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1 Pole
General:
The rated operating voltage of YCB8-125PV series DC 5OOV miniature circuit breakers can reach DC 500V, and the rated operating current can reach 125A, which is used for isolation, overload, and short circuit protection. It is widely used in photovoltaic, industrial, civil, communication, and other systems, and can also be used in DC systems to ensure the reliable operation of DC systems. Standard: IEC/EN 60947-2
Features
Modular design, small size
Standard Din rail installation, convenient installation
Overload, short circuit, isolation protection function, comprehensive protection
Current up to 125A
The breaking capacity reaches 6KA, with a strong protection capacity
Complete accessories and strong expansibility
Multiple wiring methods to meet various wiring needs of customers
The electrical life reaches 10000 times, which is suitable for the 25-year life cycle of photovoltaics.
Specification |
Details |
Standard |
IEC/EN 60947-2 |
Rated Current In (A) |
125 |
Number of Poles |
1Pole |
Rated Working Voltage Ue (V DC) |
500 |
Rated Impulse Voltage Uimp (kV) |
6 |
Operation Breaking Capacity Ics (kA) |
Pv: 6, PVn: 10 |
Ultimate Breaking Capacity Icu (kA) |
li = 10ln (default) |
Tripping Type |
Thermomagnetic |
Mechanical Life (times) |
20,000 |
Electrical Life (times) |
PV: 1000, PVn: 300 |
Polarity |
Heteropolarity |
Inline Methods |
Can be up and down the line |
Storage Temperature (°C) |
-35 ~ +70 |
Working Temperature (°C) |
-40 ~ +85 |
Altitude (m) |
Use with derating above 2000m |
Protection Degree |
IP20 |
Pollution Degree |
Level 3 |
Installation Environment |
Places without significant vibration/impact |
Installation Category |
Category III |
Installation Method |
DIN35 standard rail |
Wiring Capacity |
2.5–50 mm² |
Terminal Torque |
3.5 N·m |
DC Breaker Temperature Correction Factor
When selecting DC MCB( DC Maniature Circuit Breakers) for solar systems and other electrical installations, it is vital to consider the ambient temperature correction factor to ensure optimal performance and safety.
With corrected values catered to current ratings 125A, our DC Breakers are made to run consistently across a large temperature range.
Breaker Current Capacity Changes
The rated current capacity changes with the increasing ambient temperature to minimize tripping failures or overheating. At 60°C, for instance, a 63A breaker will transport just 53.4A whereas a 125A breaker will carry 105.4A.
In high-temperature settings including solar PV installations, battery energy storage systems, and industrial control panels, this temperature derating guarantees long-term protection and efficiency.
Use the given adjustment chart always to match your breaker with actual running conditions. Our breakers are a dependable solution for DC circuit protection since they follow IEC/EN criteria.
Rated Current (A) |
-25°C |
-20°C |
-10°C |
0°C |
10°C |
20°C |
30°C |
40°C |
50°C |
60°C |
125A |
157 |
152.2 |
147.2 |
141.9 |
136.5 |
130.8 |
125 |
118.8 |
112.3 |
105.4 |
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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