Fibox MB 10523 - Blind plug for cover corner on hinged side when cover screws are not used
Fibox

MB 10523

Alternate Item Number: 2560523

Contact for Pricing

Overview

The Fibox MB 10523 blind plug provides a clean, finished appearance for cover corners on the hinged side of industrial enclosures when cover screws are not used. This plug eliminates unsightly gaps and maintains enclosure integrity by sealing the corner where the cover meets the hinged side, preventing dust, debris, and moisture ingress. Manufactured by Fibox, a US-based leader in industrial enclosure solutions, the MB 10523 is precision-engineered to match Fibox enclosure designs, ensuring a professional aesthetic without compromising protection. Ideal for applications requiring a flush, screw-free hinge-side finish, this blind plug integrates seamlessly with Fibox hinged cover enclosures, including models such as the MB 10500, MB 10510, and MB 10520 series. The plug is made in the USA and carries the UNSPSC code 39121300, confirming its classification for industrial hardware components. Compatible with Fibox’s polycarbonate and metal enclosures, the MB 10523 is designed for durability, UV resistance, and long-term performance in harsh industrial environments. Its snap-in installation requires no additional hardware, simplifying assembly and reducing labor costs. The plug’s compact design ensures it does not interfere with hinge operation or enclosure functionality.
  • Provides a clean, finished look for hinged-side cover corners without screws
  • Seals gaps to maintain enclosure protection and integrity
  • Precision-engineered to match Fibox enclosure designs
  • Manufactured in the USA for reliability and quality
  • UNSPSC code 39121300 for industrial hardware classification

Specifications

Material
Polycarbonate
Mounting Type
Snap-in
Series
MB 10520
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1/2 Inch Snap-In Blank, Steel-Zinc Plated

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8x8x4 Polycarbonate Enclosure NEMA 4X | Hinged Cover | Gray | Stainless Steel Locking Latch | Mounting Feet

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Frequently Asked Questions about Fibox

What environmental ratings do Fibox products have?

Fibox enclosures offer robust environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13; CSA Type 1, 2, 3, 4, 4X, 12, and 13; NEMA Type 1, 2, 3, 3R, 4, 4X, 12, and 13; and IEC 60529 IP66. These ratings ensure protection in demanding environments, from indoor dust and moisture to outdoor applications with water exposure and UV resistance.

What accessories are available for Fibox products?

Fibox offers a comprehensive range of accessories for their enclosures, including membrane flange plates, cable gland plates, metric flange plates, and cover plates. These accessories are designed for cable management and provide IP65/IP66 protection, with options for various cable sizes and configurations. Specific accessories include membrane flange sets with lead-through options, cable gland plates with multiple mounting points, and cover plates for different enclosure sizes.

What certifications and standards do Fibox products comply with?

Fibox products are certified to multiple international standards, including NEMA 250-1991 Type 4, 4X, 12, and 13 ratings. They comply with key standards such as EN 60670-1, EN 60670-22, EN 62208, ANSI/UL 50, CSA C22.2 No.94-1-2, and meet EAC certification requirements for Russian and CIS markets. Additionally, Fibox maintains ISO 9001:2015 quality certification, demonstrating their commitment to high-performance industrial enclosure solutions.

What industries and applications are Fibox products used for?

Fibox products are engineered for demanding environments across multiple critical industries, including Machine & Vehicle Building, Telecom & Data, Renewable Energy, Transport, Factory & Building Automation, Utilities, and Heavy Industry. Their enclosures and electrical protection solutions are specifically designed for control units, power distribution systems, terminal enclosures, junction boxes, instrumentation, and electronic device applications that require robust, high-performance protection.

What technical support does Fibox offer?

Fibox offers comprehensive technical support through multiple channels. Their website provides interactive 2D/3D CAD downloads, dimensional drawings, material specifications, and regulatory approvals. Additionally, Fibox provides customization services including machining, assembly, tool modifications, color options, EMC protection, and printing to meet specific industrial enclosure requirements.

What are the main product lines offered by Fibox?

Fibox offers a comprehensive range of industrial enclosure product lines including ARCA IEC (high-performance cabinets), MNX (polycarbonate and ABS enclosures with multiple configurations), EK (modular enclosures with extensive sizing options), CARDMASTER (two-compartment enclosures), and solutions for control units, power distribution, terminal enclosures, junction boxes, instrumentation, and electronic devices across multiple industries like machine building, transportation, renewable energy, and telecommunications.

What are the key features of Fibox products?

Fibox products feature innovative, high-performance enclosures designed to protect electrical and electronic components in demanding environments. Key features include over 1000 enclosure variations, advanced injection molding technologies like 2-component moulding for superior gasket protection, and customization options such as custom colors, machining, and EMC shielding. Their enclosures are made from durable polycarbonate plastics, offer superior ingress protection ratings, and are engineered to meet the specific needs of industries like machine building, telecom, renewable energy, and factory automation.

How are Fibox products typically installed?

Fibox products are typically installed using versatile mounting options including mounting plates, DIN rails, and custom breakout configurations. Their online configurator allows precise positioning of installation components like cable glands and mounting accessories, enabling users to customize enclosures for specific industrial applications. Installation is designed to be quick and straightforward, with pre-assembled options available to reduce labor time and complexity.

What communication protocols do Fibox products support?

Fibox products support a comprehensive range of industrial communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols enable flexible network integration and seamless communication across various industrial automation systems, providing advanced diagnostic and configuration capabilities.