Littelfuse LFPSJ30-3 - LFPSJ303 is a non-indicating Class J dead front fuse holder with a maximum ampere rating of 30.
Littelfuse

LFPSJ30-3

Alternate Item Number: LFPSJ303.Z

UPC: 079458188752

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Overview

The **Littelfuse LFPSJ30-3** is a **Class J dead front fuse holder** engineered for **industrial electrical systems** requiring robust overcurrent protection. Designed with a **maximum ampere rating of 30**, this non-indicating fuse holder delivers reliable performance in high-demand environments where electrical safety and circuit integrity are critical. Built to meet stringent industry standards, the LFPSJ30-3 ensures secure fuse mounting, minimizing the risk of accidental contact and electrical hazards while maintaining operational efficiency. Class J fuse holders are a cornerstone of modern industrial electrical protection, offering a balance of **high interrupting rating, compact design, and compatibility** with a wide range of Class J fuses. The **dead front design** of the LFPSJ30-3 eliminates exposed live components during fuse replacement, enhancing safety for technicians working in panelboards, switchgear, or control cabinets. This feature is particularly valuable in **manufacturing plants, data centers, renewable energy systems, and commercial buildings**, where downtime and safety are paramount concerns. Key applications for the **Littelfuse LFPSJ30-3** include: - **Motor control centers (MCCs)** for protecting branch circuits and branch motor controllers. - **Power distribution panels** in industrial facilities, ensuring compliance with NEC and OSHA regulations. - **Renewable energy systems**, such as solar inverters and wind turbine controllers, where reliable overcurrent protection is essential. - **HVAC systems** in commercial buildings, safeguarding against overloads in compressors and fans. - **Machine tool applications**, including CNC equipment and robotic systems, where precise circuit protection prevents costly damage. The **non-indicating design** of the LFPSJ30-3 simplifies installation while maintaining high performance. Unlike indicating fuse holders, this model does not feature visual status indicators, making it ideal for applications where visual cues are unnecessary or where space constraints favor a streamlined design. The fuse holder’s **robust construction** ensures durability in harsh industrial environments, resisting corrosion, vibration, and thermal stress. Its **compact form factor** allows for easy integration into tight panel spaces without compromising functionality. Selecting the right fuse holder involves considering **interrupting rating, voltage rating, and environmental conditions**. The LFPSJ30-3 is rated for **600V AC/DC**, making it suitable for both low- and medium-voltage applications. Its **UL 512 and CSA certification** guarantees compliance with North American safety standards, while Littelfuse’s reputation for **quality and reliability** ensures long-term performance. Professionals trust Littelfuse for industrial protection solutions because the company combines **decades of expertise with rigorous testing**, delivering products that meet the demands of modern electrical systems. Installation of the **LFPSJ30-3** is straightforward, with standard mounting options for panelboards or DIN rails. The fuse holder’s **screw-type terminals** provide secure connections, reducing the risk of loose wiring or poor contact. For optimal performance, ensure proper **fuse sizing** and **torque specifications** during installation, as mismatched fuses or overtightened terminals can compromise safety. Regular inspection and maintenance, including checking for signs of wear or overheating, will extend the lifespan of the fuse holder and associated components. Littelfuse, a global leader in circuit protection, has been providing **high-performance fuse holders and accessories** for over a century. The company’s commitment to innovation and safety is evident in products like the **LFPSJ30-3**, which reflect the latest advancements in electrical protection technology. By choosing Littelfuse, engineers and facility managers gain access to a **trusted brand** with a proven track record in industrial, commercial, and utility applications. In summary, the **Littelfuse LFPSJ30-3 Class J dead front fuse holder** is a **versatile, high-quality solution** for industrial electrical protection. Its **30A rating, non-indicating design, and dead front safety features** make it an ideal choice for a wide range of applications, from motor control to renewable energy systems. With **UL and CSA certification**, **durable construction**, and **easy installation**, this fuse holder delivers the reliability and performance that professionals demand. Trust Littelfuse to safeguard your critical electrical circuits with solutions designed for the most demanding environments.
  • 30A maximum ampere rating for industrial circuit protection
  • Non-indicating dead front design enhances safety during fuse replacement
  • UL 512 and CSA certified for compliance with North American standards
  • Compact and durable construction for harsh industrial environments
  • Compatible with Class J fuses for versatile application use

Specifications

Brand Name
Littelfuse
Connection Type
Screw-type terminals
Current Rating
30 A
Mounting Type
Panelboard or DIN rail
Series
LFPSJ
Special Features
Small compact design offers ultimate flexibility
Standard
UL Listed CSA
Sub Brand
LFPSJ Series Fuseholder
Type
Class J Fuseholder
Voltage Rating
600V AC/DC
The Mersen FBC60J30I is an open-style Class J fuse block designed for 600V applications, accommodating fuses from 0-100A. This Generation 2 (Gen2) model offers enhanced features for efficient installation and configuration. It supports multiple connector types, including screw, pressure plate, and box connectors, ensuring compatibility with a wide range of stranded or solid wire. The FBC60J30I is DIN-rail mountable, providing a compact footprint compared to traditional fuse blocks. Its dovetail nesting capability allows for easy field assembly of multipole configurations. When paired with Mersen’s newly designed dead front covers, the fuse bases achieve an IP20 rating for added safety. Manufactured in the US.

FBC60J30I

The Mersen FBC60J30I is an open-style Class J fuse block designed for 600V applications, accommodating fuses from 0-100A. This Generation 2 (Gen2) model offers enhanced features for efficient installation and configuration. It supports multiple connector types, including screw, pressure plate, and box connectors, ensuring compatibility with a wide range of stranded or solid wire. The FBC60J30I is DIN-rail mountable, providing a compact footprint compared to traditional fuse blocks. Its dovetail nesting capability allows for easy field assembly of multipole configurations. When paired with Mersen’s newly designed dead front covers, the fuse bases achieve an IP20 rating for added safety. Manufactured in the US.
The Littelfuse LFPSC fuse holder is designed to hold Class CC fuses. Features/Benefits: Finger-Safe design offers personnel protection; Compact design; 35 mm DIN Rail Mountable; No fuse pullers or tools required for fuse removal; Indication option available.

LFPSC0002ZXID

The Littelfuse LFPSC fuse holder is designed to hold Class CC fuses. Features/Benefits: Finger-Safe design offers personnel protection; Compact design; 35 mm DIN Rail Mountable; No fuse pullers or tools required for fuse removal; Indication option available.
D2.5/8SFT ADO

1SNA199184R1100

D2.5/8SFT ADO

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.