Littelfuse 235004P - FAST-ACTING 5X20MM GLASS FUSE 4PA. 5x20mm medium-acting glass body fuse designed to UL specification. Features: Designed to UL/CSA/ANCE 248 Standard. Available in cartridge and axial lead format RoHS compliant and lead-free.
Littelfuse

235004P

Alternate Item Number: 0235004.VXP

UPC: 079458908510


Documents & Media
BrochureTechnical BulletinSpecification Sheet

Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Overview

The **Littelfuse 235004P 5x20mm glass fuse** delivers fast-acting overcurrent protection for industrial and electronic systems, combining precision engineering with compliance to global safety standards. Rated at **4A**, this medium-acting fuse is part of the trusted **235 Series**, designed to meet **UL/CSA/ANCE 248** specifications for reliable circuit protection in demanding environments. Its **glass body construction** ensures excellent insulation, thermal resistance, and visual status indication, while the **RoHS-compliant, lead-free** design aligns with modern environmental regulations. Available in both **cartridge and axial lead formats**, the 235004P offers versatile installation options for engineers and technicians seeking adaptable solutions across diverse applications. **Key Features & Benefits:** - **Fast-Acting Protection:** Engineered for rapid response to overcurrent conditions, minimizing downtime and preventing damage to sensitive components in power supplies, control panels, and instrumentation systems. - **Global Compliance:** Certified to **UL/CSA/ANCE 248**, ensuring compatibility with international safety standards for industrial, commercial, and residential applications. - **Versatile Mounting Options:** Supports both **cartridge and axial lead configurations**, allowing seamless integration into existing designs or custom assemblies without redesign. - **Durable Glass Construction:** The **5x20mm glass body** provides superior mechanical strength, heat resistance, and clear visibility of the fuse element for quick diagnostics. - **Environmentally Responsible:** Fully **RoHS-compliant and lead-free**, meeting modern sustainability requirements while maintaining peak performance. **Industry Applications:** The **235004P fuse** is a critical component in a wide range of sectors, including: - **Industrial Automation:** Protects PLCs, motor drives, and control circuits from transient surges and overloads in manufacturing environments. - **Power Supplies & Electronics:** Safeguards sensitive components in power conversion systems, LED drivers, and telecom equipment. - **Automotive & Transportation:** Used in vehicle electronics, charging systems, and railway signaling where reliability is paramount. - **Renewable Energy:** Ideal for solar inverters, wind turbine controllers, and battery management systems requiring precise overcurrent protection. - **Consumer Appliances:** Ensures safety in household devices like power tools, chargers, and HVAC systems. **Why Choose Littelfuse?** With over a century of innovation in circuit protection, **Littelfuse** is a globally recognized leader in fuses, relays, and semiconductor solutions. The **235 Series** reflects the company’s commitment to **precision engineering, rigorous testing, and adherence to international standards**, making it a preferred choice for engineers worldwide. Whether for high-volume production or critical infrastructure, Littelfuse fuses are trusted to deliver **consistent performance, long service life, and uncompromising safety**—even in the most challenging operating conditions. **Installation & Selection Guidance:** When specifying the **235004P**, consider the following: - **Current Rating:** Ensure the **4A** rating matches the circuit’s nominal current to avoid nuisance tripping or inadequate protection. - **Mounting Style:** Choose between **cartridge (plug-in)** for panel-mounted applications or **axial lead** for direct soldering to PCBs. - **Response Time:** Medium-acting fuses like this one balance speed and selectivity, making them ideal for protecting downstream components without false trips. - **Environmental Factors:** The glass body excels in high-temperature or vibration-prone environments, while RoHS compliance ensures future-proofing. For engineers seeking a **reliable, compliant, and versatile fuse solution**, the **Littelfuse 235004P** stands out as a proven performer. Its combination of **fast-acting protection, global certifications, and flexible installation** makes it an essential component in modern electrical and electronic systems. Trust Littelfuse to safeguard your circuits with precision and durability.
  • 4A fast-acting protection for industrial & electronic circuits
  • UL/CSA/ANCE 248 compliant for global safety standards
  • Available in cartridge and axial lead formats for versatile installation
  • RoHS-compliant, lead-free glass body for environmental responsibility
  • Trusted Littelfuse quality with durable 5x20mm glass construction

Specifications

Amperage Rating
250 Amps
Application
General Purpose
Brand Name
Littelfuse
Connection Type
Cartridge/Axial Lead
Current Rating
4 A
Material
Glass
Mounting Type
Panel/PCB
Mounting Type
PCB/Panel Mounting
Series
235 Series
Size
5x20mm
Special Features
Time-Delay
Standard
Standard 248-12 UL Listed/CSA
Sub Brand
POWR-GARD FLSR Series
Type
Class RK5
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 Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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
9F61 Size B Clips 1.6in

9F61BWW460

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.