Littelfuse LA70P1000-4 - Specialty Fuses 700 VAC Semiconductor Fuses
Littelfuse

LA70P1000-4

Alternate Item Number: LA70P10004

UPC: 079458151596


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Overview

The **Littelfuse LA70P1000-4** is a high-reliability **700 VAC semiconductor fuse** engineered for demanding industrial applications where precision protection is non-negotiable. Designed to safeguard sensitive electronic components in power systems, motor controls, and industrial automation, this fuse delivers **fast-acting overcurrent protection** with exceptional accuracy. The LA70P series represents Littelfuse’s commitment to advanced fuse technology, combining robust construction with precise performance to ensure the safety and longevity of critical equipment in harsh environments. **Key Features & Benefits:** - **700 VAC Voltage Rating:** Ideal for high-voltage industrial applications, including power conversion systems, variable frequency drives (VFDs), and renewable energy installations where transient overvoltages are common. - **Semiconductor Protection:** Specifically engineered for semiconductor devices, this fuse provides **ultra-fast response times** to prevent catastrophic failure during fault conditions, minimizing downtime and repair costs. - **High Breaking Capacity:** Built to interrupt high fault currents efficiently, the LA70P1000-4 ensures reliable operation even in the most demanding electrical systems. - **Robust Construction:** Constructed with high-quality materials to withstand thermal cycling, vibration, and environmental contaminants, making it suitable for industrial and outdoor applications. - **Compliance & Reliability:** Littelfuse’s reputation for quality and innovation ensures this fuse meets stringent industry standards, providing peace of mind for engineers and technicians. **Typical Applications:** The **LA70P1000-4** is a go-to solution for professionals in industries such as: - **Power Electronics:** Protecting inverters, converters, and rectifiers in solar, wind, and battery energy storage systems. - **Motor Controls:** Safeguarding motor drives, soft starters, and servo systems from overcurrent events that could damage windings or power semiconductors. - **Industrial Automation:** Ensuring the integrity of PLCs, CNC machines, and robotic systems where uninterrupted operation is critical. - **Transportation & Rail:** Providing protection in traction systems, battery management, and auxiliary power units for rail and electric vehicle applications. **Selection & Installation Considerations:** When choosing a semiconductor fuse like the **LA70P1000-4**, professionals must evaluate: - **Voltage Rating:** Must exceed the system’s maximum operating voltage to ensure proper isolation during faults. - **Interrupting Rating:** Should match or exceed the prospective fault current of the circuit to prevent arcing or explosion. - **Response Time:** Fast-acting fuses like the LA70P series are essential for protecting sensitive semiconductors from thermal runaway. - **Mounting & Form Factor:** Available in standard configurations (e.g., bolt-down, DIN rail) to simplify integration into existing systems. **Why Choose Littelfuse?** With over a century of innovation in circuit protection, Littelfuse is a trusted name in industrial safety. The **LA70P1000-4** exemplifies their expertise in semiconductor fuses, offering: - **Proven Performance:** Decades of field-tested reliability in mission-critical applications. - **Global Support:** Access to technical expertise, global distribution, and compliance with international standards (e.g., UL, IEC). - **Sustainability:** Designed for long service life, reducing maintenance costs and environmental impact. Whether you’re protecting a high-power inverter in a renewable energy farm or a precision motor drive in a factory automation line, the **Littelfuse LA70P1000-4** delivers the performance and durability required for modern industrial challenges. Trust Littelfuse to keep your systems safe, efficient, and operational—even in the toughest conditions.
  • 700 VAC voltage rating for high-voltage industrial applications
  • Ultra-fast response for semiconductor protection
  • High breaking capacity for reliable fault interruption
  • Robust construction for harsh environments
  • Compliant with industry standards for safety and reliability

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Series
LA70P
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Voltage Rating
700 VAC
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.