Littelfuse 1PH4P18MM - 1PH4P18MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 79 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.
Littelfuse

1PH4P18MM

UPC: 079458820942

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Specification Sheet

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Overview

The Littelfuse 1PH4P18MM POWR Busbar system is a UL 508 Listed, 4-pole copper busbar designed for safe, compact power distribution in industrial and commercial panels. This 79 mm cuttable busbar eliminates excessive wire terminations, reducing panel complexity and installation time by up to 40% compared to traditional distribution blocks. Engineered for high electrical conductivity and thermal performance, the 1PH4P18MM supports both 600 V AC/DC and 1000 V DC (1-phase, 18 mm²) voltage ratings, making it ideal for solar power systems, motor control centers, industrial control panels, and renewable energy installations. The copper construction delivers robust performance with current ratings of up to 80 A (end-fed) and 160 A (center-fed), ensuring reliable power delivery even in high-demand applications. Its 35 mm DIN-rail mountable design ensures seamless integration into standard industrial enclosures, while the touch-safe design protects technicians during fuse replacement, reducing workplace hazards and downtime. Compatible with Littelfuse LFPSM, LFPSC, LPSM, LPSC (600 V), and LPHV (1000 V) fuse holders, the 1PH4P18MM provides a cohesive and reliable power distribution solution. Installation is simplified with the ability to trim the busbar to optimal length, eliminating the need for additional distribution blocks or complex wiring. RoHS-compliant and lead-free, this busbar system aligns with modern environmental and safety standards. Optional power feed lugs (e.g., BB17, BB18, BB19, BB20) and pole protective covers (e.g., CTPT55) are available for customized installations.
  • UL 508 Listed 4-pole copper busbar for 600V AC/DC and 1000V DC applications
  • Current ratings: 80A (end-fed), 160A (center-fed) with 18 mm² cross-section
  • 79 mm cuttable design for customizable panel integration
  • 35 mm DIN-rail mountable with touch-safe fuse holder compatibility
  • RoHS-compliant, lead-free construction for modern safety standards
  • 35 mm DIN-rail mountable for easy integration
  • Copper construction for high electrical conductivity and thermal performance
  • RoHS-compliant and lead-free for environmental compliance
  • Current ratings: 80 A (end-fed), 160 A (center-fed)
  • Optional power feed lugs and protective covers available

Specifications

Connection Type
Dead front fuse holders
Current Rating
80 A (end-fed), 160 A (center-fed)
Material
Copper
Mounting Type
35 mm DIN-rail
Poles
1PH
Series
POWR Busbar
Size
79 mm
Voltage Rating
600 V AC/DC, 1000 V DC
1PH3P18MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 60 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.

1PH3P18MM

1PH3P18MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 60 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.
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1SNA110368R1200

DR4/8 SF DIN2

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.