Littelfuse PSX3XLDB1400 - POWR-SPEED SQB SIZE 3XL DIN BL 1400A. Littelfuse PSX series 1500 V dc high-speed square bodyfuses are specially designed to protect battery energy storage systems (BESS), photovoltaic inverters, and many of dc applications such as dc common bus systems, larger industrial regenerative drives, rectifiers and, metal processing equipment. The PSX series fuses are extremely fast-acting, offering high-speed performance up to 1500 V dc, ranging from 80 A to 1400 A in the smallest NH XL package sizes. The PSX series is available with multiple mounting terminations including flush-end style, DIN-style and bolted-blade style. Visual blown fuse indication is standard on all fuses and optional micro-switch is available for external indication. PSX series are certified to UL 248-13 and designed to meet EN high-speed semiconductor fuse standard and IEC 60269-7, a new battery protection fuse standard in development.
Littelfuse

PSX3XLDB1400

Alternate Item Number: PSX3XLDB1400X

UPC: 079458263404

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Overview

The Littelfuse PSX3XLDB1400 POWR-SPEED SQB Size 3XL DIN BL 1400A fuse represents a pinnacle of DC circuit protection technology, engineered for the most demanding industrial and renewable energy applications. This high-speed, square body fuse is specifically designed to safeguard critical infrastructure such as Battery Energy Storage Systems (BESS), photovoltaic inverters, and robust DC common bus systems. Its exceptional performance characteristics make it an indispensable component in larger industrial regenerative drives, rectifiers, and metal processing equipment where rapid fault interruption is paramount. Engineered for extreme conditions, the PSX series offers ultra-fast acting protection at voltages up to 1500 V dc. The PSX3XLDB1400 variant, with its substantial 1400A rating, is housed within the compact and efficient NH XL package size, allowing for high current density without compromising on protection efficacy. This fusion of high voltage, high current, and compact form factor is a significant advantage in space-constrained installations. Littelfuse provides versatility in mounting configurations to meet diverse system integration needs. The PSX3XLDB1400 features a DIN-style mounting termination, ensuring straightforward installation and secure connection within standard DIN fuse holders. Complementing this, the PSX series is also available with flush-end style and bolted-blade style terminations, offering flexibility for various equipment designs and retrofits. This adaptability simplifies the design and maintenance processes for engineers and technicians. Reliability and operational awareness are further enhanced by standard features. All PSX series fuses include visual blown fuse indication, providing an immediate and clear visual cue when the fuse has operated, facilitating quick identification and replacement. For advanced monitoring and integration into SCADA or alarm systems, an optional micro-switch is available, enabling external indication of fuse status. This dual approach to indication ensures both on-site and remote system health monitoring. Adherence to stringent international standards underscores the quality and reliability of the PSX series. The fuses are certified to UL 248-13, a key standard for safety and performance in North America. Furthermore, they are designed to meet EN high-speed semiconductor fuse standards and the emerging IEC 60269-7 standard, specifically developed for battery protection. This compliance ensures that the PSX3XLDB1400 provides robust and compliant protection for a wide array of DC applications. Key Features and Benefits: * **Ultra-Fast DC Protection:** Engineered for rapid fault interruption, minimizing damage to sensitive equipment. * **High Voltage and Current Rating:** Supports up to 1500 V dc and 1400 A, suitable for high-power DC systems. * **Compact NH XL Package:** Offers high current density in a small footprint, ideal for space-limited applications. * **Versatile Mounting Options:** Available in DIN-style, flush-end, and bolted-blade terminations for flexible integration. * **Visual Blown Fuse Indication:** Standard feature for easy identification of fuse operation. * **Optional Micro-Switch:** Enables external monitoring and integration with control systems. * **Industry Certifications:** UL 248-13, EN semiconductor fuse standards, and IEC 60269-7 compliance for assured reliability. * **Broad Application Spectrum:** Protects BESS, PV inverters, DC common bus, regenerative drives, rectifiers, and metal processing equipment. When selecting protective devices for critical DC systems, the Littelfuse PSX3XLDB1400 stands out as a superior choice, offering unparalleled speed, robust protection, and design flexibility. Trust Littelfuse, a recognized leader in circuit protection, to safeguard your valuable assets with their advanced POWR-SPEED fuse technology.
  • 1500 V dc high-speed square body fuse for critical DC applications
  • 1400A current rating in a compact 3XL NH package size
  • DIN-style mounting termination for easy integration
  • Designed for Battery Energy Storage Systems (BESS) and photovoltaic inverters
  • Certified to UL 248-13 and meets EN/IEC standards for semiconductor and battery protection

Specifications

Amperage Rating
1400 A
Brand Name
Littelfuse
Case Size
NH 3XL
Interrupting Rating
113 kA @ 1500 Vdc
Response Time
Very Fast-Acting (FF)
Sub Brand
POWR-SPEED® Fuse
Type
Square Body Fuse
Voltage Rating
1500 V
Watts loss at 100% rated current
361.9 W
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9F61 Size B Clips 1.6in

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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 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.