Weikewei Circuit Breaker BA, BC, BD, BM SeriesSpecification parameters of circuit breakerOverview, it looks dazzling, and it is important to understand and use it correctly:

The entire series is divided into four types, including BA, BC, BD, BM and other series of circuit breakers. The basic parameters of each model are as follows.

Small volume BM series circuit breaker: with a shell rating of 30A, the rated working current ranges from 1A to 30A, and the voltage includes different voltage environments such as DC and AC.

50A BA series circuit breaker: 50A, rated operating current from 1A to 50A, including DC and AC voltage environments.

100A BC series circuit breaker: with a shell rating of 100A, the rated operating current ranges from 1A to 100A, including DC and AC voltage environments.

Installation of BD series circuit breakers on guide rails: The enclosure level is 50A, and the rated working current ranges from 1A to 50A, including DC and AC voltage environments.

If the Weikewei circuit breaker B series is divided according to the rated ultimate short-circuit breaking capacity (Icu), there are four levels: C-type (basic type), L-type (standard type), M-type (higher breaking type), and H-type (high breaking type).

The breaking capacity levels of the BA model of the 50A shell circuit breaker are C, L, and M, and the breaking capacity level of the CM3E model of the molded case circuit breaker is M. They can both be connected using reverse lines when used in AC 400V distribution systems.

The entire series of equipment can be installed horizontally (horizontal installation), vertically (vertical installation), and horizontally, and also has isolation function. And circuit breakers BA, BC, L/M/H type with model specifications, C/L/M/H type with BC model specifications, and A and B type plastic shell circuit breakers with four poles of the above specifications can have a unique "overload alarm without tripping" function, ensuring the continuity of power supply and meeting the relevant standard requirements of Article 6.3.6 of GB50054.

The Weikewei B series circuit breakers BA, BC and other series have non leakage alarm and non trip modules to avoid significant losses caused by power outages, and also meet the requirements of Article 4.6 of GB13955. The entire series of circuit breakers comply with the following relevant standards and regulations.

IEC60947-1 and GB/T14048.1-2012 General Principles for Low Voltage Switchgear and Control Equipment;

IEC60947-2 and GB/T14048.2-2008 "Low voltage switchgear and control gear" circuit breakers;

IEC60947-4-1 and GB/T14048.4-2010 "Low voltage switchgear and control equipment" - Electromechanical contactors and motor starters (including motor protectors).

Selection Guide for Weikewei Circuit Breaker B Series

The quick selection guide for BM series is shown in the following figure

Note:

1. Equipped with a distributed photovoltaic grid connected circuit breaker with overvoltage protection, the rated tripping value for voltage loss is 20% of the rated voltage for 10 seconds, the rated tripping value for overvoltage is 135% of the rated voltage, and the voltage detection value is greater than 85% of the rated voltage.

2. Equipped with equipment ranging from low temperature to -40 ℃.

The altitude of the location where the circuit breaker is installed is not recommended to exceed 2000 meters;

The pollution level is level 3 and applicable to electromagnetic environment A. At the same time, the installation category of the main circuit of the molded case circuit breaker is III, and the installation category of the other auxiliary circuits and control circuits is II;

The relative humidity of the air at the installation site should not exceed 50% when the maximum temperature is+40 ℃. Similarly, it is possible to have a higher relative humidity at lower temperatures, such as 90% when reaching 20 ℃. Protective measures must be taken for occasional condensation caused by temperature changes.

The Weikewei B series circuit breakers have passed the GB/T2423.10 test requirements and are capable of withstanding mechanical vibrations with frequencies ranging from 2Hz to 13.2Hz, displacements of ± 1mm, frequencies ranging from 13Hz to 100Hz, and acceleration of ± 0.7g.

The TH type circuit breaker has passed the testing requirements of GB/T2423.4 and GB/T2423.18, and can withstand the effects of humid air, salt spray, fog bacteria, and oil mist on the equipment.

Technical parameters of Weikewei B series circuit breaker BM series

● Distribution type: BA circuit breakers can be divided into two types of tripping methods.

1. The hydraulic+electromagnetic release with code 3, such as model BM3-63M/3300.

2. Code 2 only has electromagnetic release, such as model BM-100M/3200.

3. Another option is to add an accessory overload alarm non trip function (code named I), such as model CM3-100M/3200I, whose overload alarm non action characteristic is consistent with overload protection.

Motor protection type: BC circuit breakers are also divided into two types of tripping methods.

1. The hydraulic+electromagnetic release with code 3, such as model BC-63M/33002.

2. The code 2 only has an electromagnetic release, such as model BC-100M/32002.

3. An accessory overload alarm non trip function (code I) can also be added, such as model CM3-100M/32002I, whose overload alarm non action characteristic is consistent with overload protection.

Installation dimensions of Weikewei B series circuit breaker BC series

Application scenarios of Weikewei circuit breaker BC series

◆ Low voltage distribution protection

◆ Motor operation protection

◆ Photovoltaic grid connection

◆ Hydraulic magnetic circuit breaker communication

If the explanation in this article is not complete and comprehensive enough, please feel free to contact the electrical engineer at Weikewei. We will provide you with 1V1 selection guidance, saving your device selection time, reducing errors, and ensuring efficient and reliable system operation.