4MPBRA.0000-01 Junction Box
The 4MPBRA.0000-01 is a dedicated industrial junction box designed by B&R for supporting mobile panels and on-site human-machine interaction devices. It serves as a core wiring and connection unit that integrates cable transition, signal distribution, circuit protection and electrical isolation functions. Engineered for harsh industrial environments with vibration, dust and electromagnetic interference, this junction box features a rugged die-cast housing, reliable internal wiring terminals and standardized interface layout. It realizes stable electrical connection and signal transmission between mobile panels, power supplies, controllers and on-site actuators. Widely used in automated production lines, machinery equipment and industrial workshop scenarios, it supports both new system configuration and old equipment renovation, ensuring safe, neat and maintainable on-site wiring.
Description
4MPBRA.0000-01 Junction Box
Product Overview
The 4MPBRA.0000-01 is a dedicated industrial junction box designed by B&R for supporting mobile panels and on-site human-machine interaction devices. It serves as a core wiring and connection unit that integrates cable transition, signal distribution, circuit protection and electrical isolation functions. Engineered for harsh industrial environments with vibration, dust and electromagnetic interference, this junction box features a rugged die-cast housing, reliable internal wiring terminals and standardized interface layout. It realizes stable electrical connection and signal transmission between mobile panels, power supplies, controllers and on-site actuators. Widely used in automated production lines, machinery equipment and industrial workshop scenarios, it supports both new system configuration and old equipment renovation, ensuring safe, neat and maintainable on-site wiring.
Basic Information
The official model is 4MPBRA.0000-01, belonging to B&R MP series supporting accessories and specially matched with B&R mobile panel systems. The main housing and cover adopt gravity die-cast aluminum alloy material with powder-coated surface in industrial standard color, which delivers high structural strength, excellent anti-collision, anti-corrosion and anti-aging performance. The overall structure is compact with reasonable internal space layout, facilitating wiring operation and later inspection.
This junction box is equipped with professional industrial wiring terminals and multi-channel cable glands with good sealing performance. It is compatible with standard industrial cables and connector specifications, supporting fast and reliable cable access and fixing. The product complies with international industrial electrical manufacturing standards and B&R unified production processes. Each unit undergoes full wiring test, sealing test, insulation test and 48-hour continuous aging test before delivery. It has passed CE and EMC certifications to meet global industrial safety and electromagnetic compatibility requirements. The standardized mounting structure allows flexible installation on equipment brackets, control arms, cabinet surfaces and other positions, adapting to diverse on-site layout demands.
Function and Positioning
The 4MPBRA.0000-01 mainly undertakes wiring transition, signal distribution and circuit protection in industrial control systems. In terms of wiring management, it centrally arranges power cables, signal cables and communication cables connected to mobile panels, effectively organizing scattered on-site wires, avoiding cable winding and damage, and simplifying daily inspection and maintenance work. The built-in high-quality wiring terminals ensure low contact resistance and stable electrical conduction during long-term operation.
For signal and power transmission, the junction box achieves reliable switching and distribution of power supply and various control signals. It supports 24 VDC industrial power input and output, and is compatible with common industrial communication signals and switching value signals. The internal circuit is designed with electrical isolation measures to suppress external electromagnetic interference and prevent signal distortion, ensuring accurate and stable data and instruction transmission between the mobile panel and the upper control system.
In terms of safety protection, the whole sealed structure and insulating components provide effective protection against electric shock. The optimized wiring structure can avoid short-circuit risks caused by loose wires or liquid intrusion. As a supporting connection accessory for mobile panel systems, it is positioned as an indispensable intermediate wiring unit in on-site human-machine interaction solutions. It can be used together with B&R series mobile panels, PLCs and industrial controllers to form a complete on-site control and monitoring system. It can also be applied independently for wiring integration of other small and medium-sized industrial devices, featuring strong versatility and compatibility.
Core Performance Parameters
In electrical performance, the junction box is adapted to 24 VDC rated industrial power supply, with stable voltage bearing capacity and good overload resistance. The internal terminals have excellent electrical conductivity and insulation properties, with high insulation resistance to prevent leakage and short circuit faults. All signal and power interfaces adopt isolation design, which can resist electromagnetic interference from on-site motors, frequency converters and other equipment, ensuring uninterrupted and error-free signal transmission.
Regarding mechanical and sealing performance, the aluminum alloy housing has strong shock and vibration resistance, and can withstand mechanical vibration generated by long-term operation of industrial equipment without structural deformation or internal terminal loosening. The matching cable glands and integral sealing rubber rings provide high-level ingress protection, effectively blocking dust, moisture and splashed liquid from entering the interior, adapting to conventional workshop environments. The cover is fixed with anti-loosening screws to ensure the tightness of the whole machine after long-term use.
For environmental adaptability, the rated working temperature ranges from 0°C to +55°C, and the storage temperature ranges from -25°C to +65°C. It can work normally in an environment with relative humidity of 10% to 90% non-condensing, with outstanding moisture-proof and mildew-proof capabilities. The surface and internal metal parts are treated with anti-corrosion coating, which can resist mild corrosive substances in industrial environments and extend the overall service life.
General Matching Accessories
The 4MPBRA.0000-01 has high compatibility and is mainly matched with B&R MP series mobile panels and related industrial control products. For power connection, it supports standard 24 VDC industrial power cables; shielded cables are recommended in strong electromagnetic interference environments to further enhance signal stability. Corresponding industrial communication cables and network cables can be equipped according to signal types to realize data interconnection with PLC, upper computer and other equipment.
In terms of installation, standard accessories such as fixing screws, mounting brackets and sealing gaskets are provided to complete the fixation of the junction box on different installation surfaces. For mobile operation scenarios matched with mobile panels, optional drag chains and cable fixing accessories can be selected to arrange external cables and prevent cable wear and fracture during movement. Users can choose wiring terminals and cable glands of different specifications according to the actual wire diameter and wiring quantity to meet personalized wiring needs. For routine maintenance, dedicated disassembly tools and insulating gloves are recommended to ensure operation safety. All matching accessories follow unified industrial standards, with strong versatility, easy procurement and quick assembly.
Applicable Equipment and Fields
This junction box is widely applicable to industrial automation scenarios that require centralized wiring and signal transition, and is the preferred supporting accessory for mobile panel operation systems. It covers multiple fields including general machinery manufacturing, automated assembly lines, packaging machinery, textile machinery, food processing equipment and industrial testing equipment. It is suitable for both complete set of new automation equipment manufacturing and wiring transformation, maintenance and upgrading of old production lines.
With flexible installation methods such as surface mounting and bracket fixing, it adapts to indoor industrial workshop environments with dust, slight vibration and normal humidity. Whether it is a single standalone device or a large distributed production control system, it can be used as a standard wiring unit. Its stable performance, convenient wiring and high safety make it widely recognized by equipment manufacturers and system integrators in the industrial automation industry. It effectively standardizes on-site wiring, improves the safety and reliability of the whole system, and reduces subsequent maintenance costs.
Certification and Quality Description
The 4MPBRA.0000-01 is produced in strict accordance with B&R’s complete quality management system and international industrial electrical safety standards. From raw material procurement of aluminum alloy shells and insulating materials, precision machining of parts, assembly of wiring terminals to finished product sealing and testing, all production processes implement standardized operation specifications. Core components such as wiring terminals and sealing elements are sourced from qualified industrial-grade suppliers to guarantee the inherent quality of the product.
Each batch of products will undergo sampling tests including high and low temperature cycles and vibration simulation. Every finished product must pass insulation resistance test, voltage withstand test, sealing performance test and full function inspection before leaving the factory to eliminate defective products. The product has obtained CE and EMC certifications, complying with EU and international industrial electrical safety and electromagnetic compatibility norms, and can be used in most regions around the world.
Adopting mature anti-aging, anti-corrosion and anti-interference technologies, the whole machine features low failure rate and long service life under standard working conditions. The manufacturer provides a comprehensive global after-sales service system, covering professional technical consultation, installation guidance, wiring instruction, fault diagnosis and long-term maintenance services. As a mature wiring accessory verified by a large number of on-site applications, the 4MPBRA.0000-01 is a reliable choice for industrial automation system wiring configuration and spare parts stocking.
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