---
description: BENY BB1-80 modular DC miniature circuit-breakers (MCB) can be used in solar DC circuits up to 1000 VDC (4-poles execution). Application in solar DC circuits, battery energy storage systems and UPS.
title: DC Mini Circuit Breaker 1000V 125A BB1-125 IEC&AS | Beny New Energy | BENY Electric
image: https://www.beny.com/wp-content/uploads/2026/07/BENY-63A-1000V-DC-Minature-Circuit-Breaker-BB1-125.jpg
---

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- ![BENY 63A 1000V DC Circuit Breaker BB1 125]()
- ![BENY 63A 1000V DC Minature Circuit Breaker BB1 125]()

# DC Mini Circuit Breaker 1000V 125A BB1-125 IEC&AS

The BB1‑125 series PV DC Circuit Breaker are mainly used in electrical equipment such as bus box and energy storage distribution system. Rated working voltage up to DC 1000V, rated working current up to 125A.

#### Highlights :

- Non-polar More Convenient Installation
- Up to 1000V 125A
- IEC 60947-2/GB/T 14048.2
- High score breaking ability
- Overload protection; Short circuit protection; Off-frequency operation
- Arc Extinguishing and Current Limiting

- ![CE-Certified icon]()
- ![CB icon]()
- ![TUV 026660 EA Certificate]()
- ![ccc]()
- ![三角]()

[Download Datasheet](https://www.beny.com/wp-content/uploads/2026/07/Datasheet-BB1-125-DC-Circuit-Breaker-V1.00-26.1.21.pdf) [Request A Quote](javascrpt:;)

- ![BENY 63A 1000V DC Mini Circuit Breaker BB1 125]()

## Solar DC mini circuit breaker

BENY BB1-125 series PV DC Circuit Breakers are mainly used in electrical equipment such as a bus box and an energy storage distribution system.

Rated working voltage up to DC 1000V, rated working current up to 125A, Scientific arc extinguishing and current limiting the system can quickly disconnect the fault current of the DC distribution system, and can realize  
 countercurrent protection to ensure the reliable operation of the system.

## SPECIFICATION

| Electric Parameter | | | | | | | | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Standard Category | | PV Standard Circuit Breaker | | | | DC Standard Circuit Breaker | | | |
| Standard | | IEC 60947-2、GB/T 14048.2 | | | | AS/NZS IEC 60947.2 | | | |
| Product Certificate | | CCC、CE、CB | | | | AS | | | |
| Pole | | 1P | 2P | 3P | 4P | 1P | 2P | 3P | 4P |
| Rated Working Voltage<br> Ue | | 250V | 500V | 750V | 1000V | 125V | 250V | 375V | 500V |
| Maximum current of shell frame<br> Ith | | 125A | | | | | | | |
| Rated Working Current<br> In | | 80A,100A,125A | | | | | | | |
| Rated Insulation Voltage<br> Ui | | DC 1000V | | | | | | | |
| Rated Impulse Voltage<br> Uimp | | 6kV | | | | | | | |
| Run Breaking Capacity<br> Icu | | 10kA | | | | | | | |
| Untimate Breaking Capacity<br> Ics | | 6kA | | | | | | | |
| Flashover distance | | < 50mm | | | | | | | |
| Product Unipolar Internal Resistance | | < 5mΩ | | | | | | | |
| Trip Type | | Thermomagnetic type | | | | | | | |
| Service life | | | | | | | | | |
| Mechanical life | | 10000 | | | | 10000 | | | |
| Electrical life | | 300 | | | | 1000 | | | |
| Installation Environment | | | | | | | | | |
| Protection Degree | | Side IP40, cable port IP20 | | | | | | | |
| Wiring Capacity | | 2.5mm²\~50mm² | | | | | | | |
| Wiring Torque<br> M7 | | 3.5N·m\~5N·m | | | | | | | |
| Working Temperature | | -40°C\~+80°C | | | | | | | |
| Storage Temperature | | -40°C\~+85°C | | | | | | | |
| Resistance to moisture and heat | | Ⅱ (Humidity 55°C，relative humidity 95%) | | | | | | | |
| Fixed installation | | Fixed to the 35mm guide rail | | | | | | | |
| Stripping Length | | 16mm-17mm | | | | | | | |

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