Littelfuse ESR3XLDB0500X - POWR-SPEED SQB ESR 1500VDC 3XL DIN 500A
Littelfuse

ESR3XLDB0500X

Alternate Item Number: ESR3XLDB0500X

UPC: 079458370386


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Overview

The Littelfuse POWR-SPEED SQB ESR 1500VDC 3XL DIN 500A surge protective device (SPD) is engineered to deliver superior protection for critical industrial electrical systems. Designed for demanding environments, this high-performance SPD safeguards sensitive equipment from the damaging effects of transient overvoltages and lightning-induced surges. With an impressive 1500 VDC rating, it is ideally suited for DC power systems commonly found in renewable energy installations, industrial automation, and high-voltage DC power transmission. The POWR-SPEED SQB series from Littelfuse is renowned for its robust construction and reliable performance. This specific model, SKU ESR3XLDB0500X, boasts a substantial 500 Ampere current handling capability, ensuring it can effectively manage high surge currents without compromising its protective integrity. The 3XL size designation indicates a substantial physical footprint, often associated with higher energy absorption capabilities and enhanced thermal management, crucial for sustained operation under fault conditions. Installation flexibility is a key consideration in industrial settings, and the 3XL DIN mounting type of this SPD facilitates straightforward integration into standard electrical enclosures and control panels. This standardized mounting ensures compatibility with existing infrastructure and simplifies maintenance procedures. Professionals rely on Littelfuse for their commitment to quality and innovation in circuit protection, and the POWR-SPEED SQB ESR series exemplifies this dedication. Its advanced surge suppression technology offers a rapid response time, clamping dangerous voltage spikes before they can reach and damage connected equipment, thereby minimizing downtime and costly repairs. Key features and benefits include: * **High Voltage and Current Ratings:** 1500 VDC and 500 A capability for robust protection in high-power DC systems. * **Durable Construction:** Built to withstand harsh industrial environments and repeated surge events. * **Efficient Surge Suppression:** Advanced technology to quickly and effectively clamp transient overvoltages. * **DIN Mounting:** Facilitates easy and secure installation in standard industrial enclosures. * **Reliable Manufacturer:** Littelfuse is a trusted global leader in circuit protection solutions. This surge protective device is an essential component for ensuring the longevity and operational continuity of industrial machinery, control systems, power supplies, and other vital electrical assets. Its application extends across various sectors, including manufacturing, utilities, transportation, and telecommunications, where uninterrupted power and equipment integrity are paramount. By investing in the Littelfuse POWR-SPEED SQB ESR 1500VDC 3XL DIN 500A, industrial facilities can significantly enhance their resilience against electrical disturbances, safeguarding their investments and maintaining peak operational efficiency. The UNSPSC code 39121628 further categorizes this product within the electrical surge protection equipment segment, highlighting its specific function in industrial electrical systems.
  • 1500 VDC voltage rating for high-power DC systems
  • 500 Ampere current handling capability for significant surge absorption
  • 3XL size for enhanced energy dissipation and thermal management
  • DIN mounting type for simplified industrial installation
  • Littelfuse POWR-SPEED SQB series for reliable surge protection

Specifications

Current Rating
500 A
Mounting Type
DIN
Series
POWR-SPEED SQB ESR
Size
3XL
Voltage Rating
1500 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.