Littelfuse PSR033US2000 - 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

PSR033US2000

Alternate Item Number: PSR033US2000X

UPC: 079458252453


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Overview

The Littelfuse PSR033US2000, part of the advanced POWR-SPEED® PSR Series, is a high-performance square body fuse meticulously engineered for the critical task of protecting sensitive power semiconductor devices. In modern industrial power conversion and conditioning systems, components such as diodes, triacs, IGBTs, SCRs, and MOSFETs are the backbone of efficiency and control. However, these solid-state devices are exceptionally vulnerable to transient line surges and rapid overcurrent events that can lead to catastrophic failure and costly downtime. The PSR033US2000 is specifically designed to mitigate these risks with an extremely fast-acting interruption capability, providing the precise and rapid protection modern power electronics demand. This fuse is an ideal solution for a wide array of demanding applications, including: * **Variable Frequency Drives (VFDs):** Ensuring the longevity and reliable operation of motor control systems. * **Inverters:** Protecting the critical semiconductor components within AC/DC and DC/AC conversion circuits. * **Uninterruptible Power Supplies (UPS):** Safeguarding backup power systems against electrical disturbances. * **Rectifiers:** Providing essential protection for AC to DC conversion stages. * **Soft-Starters:** Preventing damage to semiconductor switches during motor startup. The Littelfuse PSR033US2000 features a robust bolted blade-style termination, a common and reliable connection method particularly prevalent in the North American market. This design ensures secure and efficient current transfer. Standard on all PSR Series fuses is a clear visual blown fuse indication, allowing for quick and easy identification of a tripped fuse, which is crucial for minimizing diagnostic time and restoring operations swiftly. For enhanced system monitoring and automation, an optional micro-switch is available, providing external indication of fuse status, which can be integrated into SCADA systems or alarm panels. Littelfuse's commitment to quality and innovation is evident in the POWR-SPEED® PSR Series. These fuses are not merely protective devices; they are integral components that enhance the overall reliability and safety of complex industrial equipment. By offering optimized circuit protection at the extremely fast speeds required by today's advanced power conversion devices, the PSR033US2000 helps prevent equipment damage, reduce maintenance costs, and ensure continuous operational uptime. When selecting fuses for critical power semiconductor applications, the Littelfuse PSR033US2000 stands out as a dependable and effective choice, backed by the trusted reputation of Littelfuse in circuit protection solutions.
  • Specifically designed for high-speed protection of power semiconductor devices (diodes, triacs, IGBTs, SCRs, MOSFETs).
  • Optimized for power conversion and conditioning equipment such as VFDs, inverters, UPS, rectifiers, and soft-starters.
  • Features bolted blade-style termination for reliable connection in North American applications.
  • Includes standard visual blown fuse indication for easy identification.
  • Optional micro-switch available for external blown fuse indication and system integration.

Specifications

Amperage Rating
2000 Amp
Application
Power conversion devices
Brand Name
Littelfuse
Connection Type
Bolted Blade Style
Connection Type
Bolted Blade
Interrupt Rating
200kA@600VAC
Response Time
Very Fast-Acting (FF)
Series
PSR
Size
Square body
Special Features
Bolted Blade
Sub Brand
POWR-SPEED® PSR Series
Type
Square Body Fuse
Voltage Rating
600/500 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 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 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.