Littelfuse BB18 - BB18 is a three-phase busbar terminal power feed lug, which is intended for use with LPSM/LPSC series fuse holders. See datasheet for more detailed specifications.
Littelfuse

BB18

Alternate Item Number: BB18

UPC: 079458165920

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Overview

The Littelfuse BB18 is a three-phase busbar terminal power feed lug (SKU: BB18) designed for efficient and compact power distribution in industrial electrical systems. This UL 508 Listed component (File E328654) integrates seamlessly with Littelfuse LPSM, LPSC, and LPHV (1000 V) series fuse holders, eliminating the need for separate power distribution blocks and reducing wire terminations. This leads to more compact panel designs and significantly faster installation times. Key specifications include a 3-pole configuration and compatibility with 18 mm² and 25 mm² busbar cross-sections. For 18 mm² busbar, it supports end-fed configurations up to 80 A and center-fed up to 160 A. For 25 mm² busbar, end-fed configurations are rated up to 100 A, and center-fed up to 200 A. The Short Circuit Current Rating (SCCR) is 10 kA, and 100 kA when protected by Class J fuses up to 175 A (18 mm²) or 200 A (25 mm²). The operating voltage is rated at 600 V ac/dc, with a special rating of 1000 V dc for single-phase configurations. The BB18 features a touch-safe design for enhanced safety during fuse replacement and is mountable on a 35mm DIN-rail. The conductor material is copper, with a pitch of 17.8 mm. This product is RoHS compliant and lead-free. It is designed for busbar thicknesses up to 0.188 in (4.78 mm) and widths up to 0.290 in (7.37 mm), with a recommended terminal torque of 24-28 lb-in (2.71–3.16 N-m). Ideal for power distribution panels, solar string combiner boxes, and control panels, the BB18 optimizes system efficiency and safety in demanding applications. Its compact design and touch-safe features make it a reliable choice for modern electrical installations.
  • Three-phase busbar terminal power feed lug for LPSM/LPSC fuse holders
  • UL 508 Listed (File E328654)
  • Supports 18 mm² and 25 mm² busbar cross-sections
  • Rated for 600 V ac/dc (1000 V dc for single-phase)
  • Touch-safe design and 35mm DIN-rail mountable

Specifications

Application
NA
Brand Name
Littelfuse
Special Features
Reduces assembly time
Standard
UL Listed
Sub Brand
POWR Busbar
Type
Power distribution blocks
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Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.