Authorized Littelfuse Distributor
Littelfuse CNN350E - CNN_E fuses are rated for applications up to 80 V dc. As fork lift trucks and electrical vehicle system voltages increase, circuit protection needs to be rated higher than the standard CNN products to handle the increased voltage. The CNN_E is considered very fast-acting for quicker reaction time.

Littelfuse CNN350E CNN_E fuses are rated for applications up to 80 V dc. As fork lift trucks and electrical…

Alternate Item Number: 0CNN350E.V

UPC: 079458183351


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Minimum Qty: 5

Multiplier: 5

*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 CNN350E (SKU: CNN350E) is a very fast-acting DC fuse designed for high-voltage industrial applications up to 80V. Engineered for lift trucks, scissor lifts, pallet movers, and low-voltage battery-powered equipment, this fuse provides critical overcurrent protection in demanding environments where rapid response is essential. With a maximum interrupting rating of 2,700A, the CNN350E exceeds the capabilities of standard CNN series fuses, making it ideal for modern electric vehicle (EV) and material handling systems where system voltages are increasing beyond traditional 48V or 32V thresholds. Key specifications include a compact design measuring 3.18" (80.8mm) in length, 0.343" (8.7mm) in diameter, and 2.43" (61.7mm) in width, allowing for space-efficient installations in tight enclosures. The fuse features a visible status window for quick inspection and is RoHS-compliant and lead-free, meeting modern environmental standards. Available in ampere ratings from 10A to 800A, the CNN350E series supports a wide range of applications, from small auxiliary systems to high-current traction battery circuits. Designed for stud mounting, the CNN350E ensures secure electrical connections and mechanical stability, even in high-vibration environments common in forklifts and battery-powered equipment. Its very fast-acting response time minimizes downtime by protecting sensitive electronic components from damage during overcurrent events. Compatible with Littelfuse’s recommended fuse blocks, such as the LFFB0003Z, the CNN350E integrates seamlessly into existing protection schemes while providing reliable performance in critical applications.
  • Very fast-acting response for rapid overcurrent protection in high-voltage DC systems
  • Rated for 80V DC and up to 2,700A interrupting current
  • Compact design (3.18" x 0.343" x 2.43") for space-efficient installations
  • Visible status window for quick fuse condition inspection
  • RoHS-compliant and lead-free construction
  • Ideal for forklifts, electric vehicles, and motorized work platforms
  • Compact, space-saving design with visual operation indication

Specifications

Amperage Rating
350 Amperes
Application
Low Voltage Battery Powered Equipment
Brand Name
Littelfuse
Frequency Rating
50/60 HZ
Interrupt Rating
2,500 Amperes
Mounting Type
Stud Mount
Series
CNN_E
Special Features
Window shows fuse status
Standard
RoHS
Sub Brand
CNN Series
Type
Very Fast-Acting (FF)
Voltage Rating
80VDC Volts
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 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
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 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

What is the voltage rating of the CNN350E?

The CNN350E is rated for 80V DC and 125V AC, making it suitable for high-voltage DC applications.

Does the CNN350E have a visible status indicator?

Yes, the CNN350E features a window that shows the fuse status for quick inspection.

What ampere ratings are available in the CNN_E series?

The CNN_E series is available in ampere ratings from 10A to 800A, including 35A, 40A, 50A, 60A, 80A, 90A, 100A, 125A, 150A, 175A, 200A, 225A, 250A, 275A, 300A, 325A, 350A, 400A, 500A, 600A, 700A, and 800A.

What is the maximum interrupting rating of the CNN350E?

The CNN350E has a maximum interrupting rating of 2,700A, providing robust protection against high fault currents.

What are the dimensions of the CNN350E fuse?

The CNN350E measures 3.18 inches (80.8mm) in length, 0.343 inches (8.7mm) in diameter, and 2.43 inches (61.7mm) in width.

Is the CNN350E RoHS-compliant?

Yes, the CNN350E is RoHS-compliant and lead-free, meeting modern environmental standards.

What applications is the CNN350E suitable for?

The CNN350E is designed for lift trucks, scissor lifts, pallet movers, and low-voltage battery-powered equipment operating up to 80V DC.

Is the CNN350E compatible with standard fuse blocks?

Yes, the CNN350E is designed to work with Littelfuse’s recommended fuse blocks, such as the LFFB0003Z.

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.