Authorized Littelfuse Distributor
Littelfuse PSR030UL0450 - Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for protection of power semiconductor devices such as diodes, triacs, IGBTs, SCRs, MOSFETs and other solid-state devices that are typically designed into power conversion and power conditioning equipment. Variable frequency drives, inverters, UPS, rectifiers and soft-starters are examples of typical equipment designed with sensitive power semiconductor devices that cannot withstand any line surge or overcurrent conditions and require high-speed protection. Littelfuse POWR-SPEED® PSR Series products offer optimized circuit protection at the extremely fast speed required to protect modern day power conversion devices. Available in Bolted Blade Style Termination (Typical in North American Market) with visual blown fuse indication standard on all fuses and optional Micro-switch for external indication.

Littelfuse PSR030UL0450 Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for protection…

Alternate Item Number: PSR030UL0450Z

UPC: 079458252583


Documents & Media
BrochureTechnical BulletinTechnical Drawing3D CAD Model (STEP)Specification SheetVideo Clip

Contact for Pricing

Minimum Qty: 3

Multiplier: 3

*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 POWR-SPEED® PSR Series High-Speed Square Body Fuse, SKU PSR030UL0450, is engineered for the critical protection of power semiconductor devices. This fuse is specifically designed for sensitive solid-state components such as diodes, triacs, IGBTs, SCRs, and MOSFETs, which are integral to power conversion and conditioning equipment. Applications benefiting from this specialized protection include variable frequency drives (VFDs), inverters, uninterruptible power supplies (UPS), rectifiers, and soft-starters. These modern power electronic systems require extremely fast circuit protection to prevent damage from line surges and overcurrent conditions that these sensitive devices cannot tolerate. The PSR030UL0450 offers optimized circuit protection with the ultra-fast response speeds demanded by today's power conversion devices. This fuse features a Bolted Blade Style Termination, a common configuration in the North American market, ensuring secure and efficient installation. Standard on all PSR Series fuses is a visual blown fuse indication, allowing for quick and easy identification of a tripped fuse. For enhanced operational awareness and system monitoring, an optional Micro-switch is available to provide external indication of fuse status. Littelfuse's POWR-SPEED® PSR Series is the reliable choice for safeguarding valuable power electronics in demanding industrial environments. Its high-speed interrupting capabilities and robust construction make it an essential component for maintaining the integrity and operational uptime of critical power systems.
  • Specifically designed for protection of power semiconductor devices (diodes, triacs, IGBTs, SCRs, MOSFETs).
  • Optimized circuit protection at extremely fast speeds for modern power conversion devices.
  • Bolted Blade Style Termination, typical in the North American market.
  • Standard visual blown fuse indication for easy status checks.
  • Optional Micro-switch available for external indication.

Specifications

Amperage Rating
450 Amp
Application
Power conversion devices
Brand Name
Littelfuse
Connection Type
Bolted Blade Style
Current Rating
30 A
Interrupt Rating
200kA@700VAC
Response Time
Very Fast-Acting (FF)
Series
PSR
Special Features
Bolted Blade
Sub Brand
POWR-SPEED® PSR Series
Type
Square Body Fuse
Voltage Rating
700/600 VAC/VDC
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

Frequently Asked Questions

What can I do on the Littelfuse Business Center website?

On LittelfuseBusinessCenter.com, you can look up product availability, pricing, place orders, check order status, and manage special pricing agreements.

What is the Littelfuse Techline contact information?

The Littelfuse Techline can be reached by phone at +1-800-TEC-FUSE (800-832-3873) in the US & Canada, or by email at [email protected].

What is Littelfuse University (LFU)?

LFU is a resource offering in-depth training courses and quick references about Littelfuse products, programs, and tools, with courses ranging from 3 to 20 minutes.

How can I get technical information or product cross-references?

Technical information and product cross-references are available through Littelfuse.com/technical-resources or by contacting the Techline experts.

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.

Where can I find digital marketing assets from Littelfuse?

Digital marketing assets such as sales tools, product images, videos, and presentations can be found at Littelfuse.com/webdam.

Where can I find customizable emails and videos from Littelfuse?

Customizable emails and popular videos can be found at littelfuse.com/email-library or Youtube.com/littelfuse.

What is the purpose of Littelfuse arc-flash protection relays?

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

How does the MROplus™ program help manufacturing facilities?

The MROplus™ program helps manufacturing facilities save money by reducing inventory and downtime while improving safety and productivity.

What kind of protection do Littelfuse voltage monitors provide?

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

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.