The Weltrus FXB3 Series 4.5kA Miniature Circuit Breaker (MCB) is designed to provide reliable protection for electrical circuits in low-voltage installations. It automatically disconnects the circuit when an overload or short circuit occurs, safeguarding connected equipment and reducing downtime.
Its compact, modular design makes it easy to install on standard DIN rails, while the high-quality internal mechanism ensures quick trip action and long-lasting performance. Available in 1P, 2P, 3P, and 4P configurations, the FXB3 Series MCB can handle a wide range of rated currents (1–125A), making it versatile enough for use in homes, offices, commercial premises, and light industrial environments.
Built to CE-certified safety standards, the FXB3 MCB offers stable performance, mechanical durability, and consistent protection across a variety of applications.
Technical Specifications:
Parameter
Value
Rated Current
1–125A
Rated Voltage
AC230/400V
Poles
1P / 2P / 3P / 4P
Breaking Capacity
4.5kA
Certification
CE
Mounting
DIN rail
Function
Overload and short-circuit protection
Applications:
Residential homes and apartments
Office buildings and retail shops
Light industrial facilities
Small commercial units
Panel boards and distribution boards
About the Manufacturer – WELTRUS:
Hangzhou Weltrus New Energy Technology Co., Ltd., under the Welfull Group, specializes in high-quality electrical protection devices and distribution equipment. Their MCB range is designed for durability, safety, and compliance with international standards, ensuring dependable protection in every application.
