Littelfuse L75QS150 - POWR-SPEED ROUND-BODY 750VDC 2ND GEN SEMICONDUCTOR FUSE
Littelfuse

L75QS150

UPC: 079458235807


Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Overview

The Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse, SKU L75QS150, represents a critical component for safeguarding sensitive semiconductor devices in high-voltage industrial applications. Engineered by Littelfuse, a globally recognized leader in circuit protection, this fuse delivers robust and reliable overcurrent protection, ensuring the longevity and operational integrity of complex electrical systems. Designed specifically for the demanding requirements of modern power electronics, the L75QS150 fuse features a 750VDC rating, making it exceptionally well-suited for applications such as renewable energy inverters (solar, wind), electric vehicle charging infrastructure, industrial motor drives, and uninterruptible power supplies (UPS). Its round-body construction facilitates easy integration into standard fuse holders and power distribution blocks, simplifying installation and maintenance processes for electrical engineers and technicians. The 2nd Generation design of this semiconductor fuse signifies advancements in materials science and manufacturing techniques, resulting in enhanced performance characteristics. These improvements typically include faster response times to fault conditions, lower I²t values for superior energy limitation, and increased interrupting ratings, all of which contribute to a higher level of protection against damaging short circuits and overloads. This precision in protection is paramount when dealing with expensive and critical semiconductor components like IGBTs, MOSFETs, and diodes, where even transient overcurrents can lead to catastrophic failure. Littelfuse's commitment to quality and innovation is evident in the L75QS150. The company's extensive research and development efforts ensure that their products meet and exceed stringent international safety and performance standards. When selecting a fuse for high-voltage DC applications, professionals rely on the proven track record and technical expertise of manufacturers like Littelfuse to provide solutions that offer both safety and efficiency. The L75QS150 is a testament to this, offering a dependable solution for critical protection needs. Key benefits and features of the Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse (L75QS150) include: * **High Voltage Capability:** Rated for 750VDC, suitable for demanding power conversion and distribution systems. * **Advanced 2nd Gen Technology:** Offers improved protection characteristics and reliability. * **Semiconductor Protection:** Specifically designed to protect sensitive power semiconductor devices. * **Robust Construction:** Round-body design for easy mounting and durability in industrial environments. * **Trusted Manufacturer:** Backed by Littelfuse's reputation for quality and circuit protection expertise. By incorporating the L75QS150 into your system design, you are investing in a high-performance protection solution that minimizes downtime, reduces the risk of equipment damage, and ensures compliance with industry safety regulations. This fuse is an indispensable component for any application where reliable and efficient overcurrent protection is a non-negotiable requirement.
  • Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse
  • SKU: L75QS150 for high-voltage DC applications
  • Designed for robust overcurrent protection of semiconductor devices
  • Ideal for renewable energy, EV charging, and industrial automation
  • Ensures reliability and efficiency in demanding environments

Specifications

Current Rating
150 A
Mounting Type
Round-body
Series
POWR-SPEED
Voltage Rating
750 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.