Authorized Littelfuse Distributor
Littelfuse 3PH9P25MM - 3PH9P25MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 158 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.

Littelfuse 3PH9P25MM 3PH9P25MM is a compact-sized POWR Busbar system that provides safe distribution of…

Alternate Item Number: 3PH9P25MM

UPC: 079458176421


Documents & Media
BrochureSpecification SheetVideo Clip

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse 3PH9P25MM POWR Busbar system is a UL 508 Listed, 3-phase power distribution solution engineered for safe, efficient, and compact electrical systems. This 25 mm² copper busbar measures 158 mm in length and is designed for 35mm DIN-rail mounting, making it ideal for space-constrained industrial and commercial panels. The busbar supports up to 200 A when center-fed and 160 A when end-fed, with a Short Circuit Current Rating (SCCR) of 10 kA (100 kA when protected by Class J fuses), ensuring robust fault protection. Key features include a touch-safe design for operator safety during fuse replacement, a modular architecture compatible with Littelfuse LFPSM, LFPSC, LPSM, LPSC (600 V), and LPHV (1000 V) fuse holders, and RoHS-compliant, lead-free construction. Typical applications include solar power distribution, motor control centers, industrial control panels, and commercial electrical systems where reliable, compact, and standards-compliant power distribution is critical. The 3PH9P25MM is UL 508 Listed (File E328654), supports 600 V AC/DC and 1000 V DC (1-phase configurations), and is available with optional endcaps, power feed lugs, and protective covers for enhanced safety and flexibility. Backed by Littelfuse’s decades of expertise in electrical protection, this busbar system delivers a durable, easy-to-install solution that meets modern regulatory and environmental standards.
  • UL 508 Listed (File E328654) for industrial compliance
  • 25 mm² copper busbar with 158 mm length (cuttable to fit)
  • Supports up to 200 A (center-fed) and 160 A (end-fed)
  • SCCR of 10 kA (100 kA with Class J fuses)
  • Compatible with Littelfuse LFPSM, LFPSC, LPSM, LPSC, and LPHV fuse holders
  • Touch-safe design for operator safety during fuse replacement
  • RoHS-compliant, lead-free construction
  • 17.8 mm pitch for modular and customizable installations
  • 35mm DIN-rail mountable for easy panel integration
  • Reduces wire terminations and eliminates need for additional distribution blocks

Specifications

Application
Industrial
Brand Name
Littelfuse
Current Rating
200 A (3-phase, center-fed), 160 A (3-phase, end-fed)
Material
Copper
Mounting Type
35mm DIN-rail
Poles
3-Phase
Series
POWR Busbar
Size
158 mm
Size
158 mm (cuttable)
Special Features
RoHS compliant
Sub Brand
POWR Busbar Series
Type
Bus Bar 3 Phase
Voltage Rating
600 V AC/DC (3-phase), 1000 V DC (1-phase)
BUSBAR TERMINAL

BB19

BUSBAR TERMINAL
Fuse Block 600VAC 600VDC Class H/K 100A 1-Pole Copper Box

61036

Fuse Block 600VAC 600VDC Class H/K 100A 1-Pole Copper Box
DR4/8 SF DIN2

1SNA110368R1200

DR4/8 SF DIN2
EDCP7 is a three-phase endcap used in conjunction with the POWR Busbar distribution system.

EDCP7

EDCP7 is a three-phase endcap used in conjunction with the POWR Busbar distribution system.
Littelfuse DIN series Class CC fuse blocks have integral DIN rail mounting capabilities that allow secure mounting to 35mm "hat" type DIN rails. New releasable mechanism allows installation and removal of block without removing adjacent components on DIN rail. Electrical panel builders and machine builders no longer need to use mounting adapters, saving assembly time and related costs.

L60030C-2SQDINR

Littelfuse DIN series Class CC fuse blocks have integral DIN rail mounting capabilities that allow secure mounting to 35mm "hat" type DIN rails. New releasable mechanism allows installation and removal of block without removing adjacent components on DIN rail. Electrical panel builders and machine builders no longer need to use mounting adapters, saving assembly time and related costs.
The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.

LFT600302C

The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.
The new Littelfuse Class H and R blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.

LFR25100-1CID

The new Littelfuse Class H and R blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.
The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.

LFT600602C

The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.

Frequently Asked Questions

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What are Littelfuse high-speed fuses used for?

High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters and variable-speed drives.

What is the voltage range for Littelfuse solar fuses?

Littelfuse offers solar fuses and holders up to 1500 Vdc for both high-current and low-current applications.

What protection do feeder protection relays offer?

Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is the Industrial Shock-Block® GFCI designed for?

It is designed for people protection in industrial facilities and meets UL Standard 943C Class C and Class D.

What do Littelfuse voltage monitors protect against?

Voltage monitors provide protection against both supply line and load side faults when the motor is running.

How do arc-flash protection relays enhance safety?

These relays detect developing arc-flash incidents and send a trip signal to interrupt power before significant damage occurs.

What types of protection do Littelfuse motor protection relays offer?

They offer voltage monitors, current monitors, and Bluetooth-enhanced overload relays for low and medium voltage applications.

What is the purpose of Littelfuse Techline support?

Techline experts answer questions about product cross-references, general technical information, engineering drawings, and application assistance.

What applications are 10 x 38 mm fuses suitable for?

These fuses provide compact supplemental protection for a wide variety of applications, available in time-delay or fast-acting versions.

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.