Authorized Littelfuse Distributor
Littelfuse 0315.300MXP - SLO-BLO GLASS AXIAL M-PACK .300A. The 3AG Slo-Blo® fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Features: In accordance with UL Standard 248-14. Available in cartridge and axial lead format and with various forming dimensions. RoHS compliant and Lead-free.

Littelfuse 0315.300MXP SLO-BLO GLASS AXIAL M-PACK .300A. The 3AG Slo-Blo® fuse solves a broad range of…

UPC: 079458927108


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Minimum Qty: 1000

Multiplier: 1000

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse 3AG Slo-Blo® Glass Axial Lead Fuse (SKU: 0315.300MXP) is a precision-engineered circuit protection solution designed for demanding industrial and electronic applications. As part of Littelfuse’s renowned Slo-Blo® series, this 0.300A fuse provides superior time-delay performance, ensuring reliable operation in applications where temporary overloads or surge conditions are common. Engineered to meet UL Standard 248-14, the 3AG Slo-Blo fuse delivers consistent current interruption while maintaining exceptional thermal stability, making it ideal for sensitive electronic circuits and power distribution systems. This fuse is available in both cartridge and axial lead formats, offering versatility for installation in tight spaces or legacy equipment retrofits. The robust glass construction provides visual confirmation of fuse status while ensuring durability under harsh operating conditions. With RoHS compliance and lead-free construction, the 0315.300MXP aligns with modern environmental standards without compromising performance. **Key Applications & Industries:** The Littelfuse 3AG Slo-Blo fuse is widely deployed across multiple sectors, including: - Industrial automation and control systems - Power supplies and converters - Telecommunications equipment - Automotive electronics (where applicable) - Test and measurement instruments - HVAC and building automation systems Its time-delay characteristic makes it particularly suitable for applications with motor startups, inrush currents, or transient spikes, where standard fast-acting fuses might nuisance-trip. Professionals in electronics manufacturing, panel building, and field service rely on Littelfuse’s reputation for reliability, backed by decades of expertise in circuit protection solutions. **Why Choose Littelfuse?** Littelfuse is a global leader in circuit protection, with a portfolio spanning fuses, relays, and semiconductor protection devices. The Slo-Blo® series, including the 3AG format, is trusted by engineers worldwide for its predictable performance and long-term reliability. Installation is straightforward—simply insert the fuse into a compatible holder or PCB mount, ensuring proper alignment and contact. For high-reliability applications, consider pairing this fuse with Littelfuse’s complementary protection components to create a layered defense strategy against overcurrent events. **Technical Highlights:** - **UL 248-14 Certified:** Ensures compliance with stringent safety and performance standards for fuse components. - **Time-Delay Design:** Handles temporary overloads without premature failure, reducing maintenance and downtime. - **Glass Axial Construction:** Offers visual status indication and robust mechanical integrity. - **RoHS & Lead-Free:** Meets global environmental regulations for sustainable electronics design. - **Versatile Mounting:** Compatible with standard 3AG fuse holders and axial lead configurations. For engineers and technicians seeking a cost-effective, high-performance fuse solution, the Littelfuse 3AG Slo-Blo 0.300A Glass Axial Lead Fuse (SKU: 0315.300MXP) delivers unmatched protection and peace of mind. Trusted by industry professionals for over a century, Littelfuse continues to set the benchmark for circuit protection excellence.
  • UL Standard 248-14 certified for safety and performance
  • 0.300A time-delay fuse for handling temporary overloads
  • Glass axial lead construction for durability and visual status indication
  • RoHS compliant and lead-free for environmental compliance
  • Versatile mounting options for industrial and electronic applications

Specifications

Amperage Rating
600 Amps
Application
Protection of Semiconductors
Brand Name
Littelfuse
Connection Type
Axial Lead
Current Rating
0.300 A
Material
Glass
Mounting Type
Cartridge/Axial Lead
Series
SLO-BLO
Size
3AG
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
POWR-GARD L15S Series
Type
Semiconductor Fuse
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 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
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

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What types of motor protection does Littelfuse provide?

Littelfuse offers voltage monitors, current monitors, and Bluetooth enhanced overload relays for low and medium voltage motor protection applications.

What do Littelfuse pump controllers protect against?

Pump controllers protect and disable a pump if a hazardous condition arises, with options for single-phase and three-phase applications.

What is the benefit of Littelfuse ground-fault protection relays?

Sensitive ground-fault relays with advanced filtering quickly and reliably detect insulation resistance breakdown caused by moisture, vibration, chemicals, or dust.

What does the Littelfuse trailing-cable protection relay monitor?

Trailing-cable protection relays continuously monitor the integrity of the ground conductor in portable cables to protect equipment from hazardous voltages.

What are Littelfuse fuse blocks and holders designed for?

Littelfuse fuse blocks and holders are selected by OEMs and designers for their compact designs, indication features, and DIN-rail mounting flexibility.

What do POWR-BLOKS power distribution blocks provide?

POWR-BLOKS power distribution blocks offer a safe and convenient way to splice cables and manage power distribution requirements within panels and systems.

What is the purpose of Littelfuse feeder protection relays?

Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is the Industrial Shock-Block® GFCI designed for?

The Industrial Shock-Block® GFCI is designed for people protection in industrial facilities and meets UL Standard 943C Class C and Class D.

How do high-resistance grounding systems benefit industrial applications?

High-resistance grounding limits point-of-fault damage and eliminates arc-flash hazards and transit overvoltages associated with ground faults.

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.