Littelfuse 70D - ALARM INDICATING FUSE 5A. The Series alarm indicating fuses are designed for use in telecommunications equipment. A color-coded tip provides visual identification of the ampere rating and the fuse status. Features: Color coded tip Rated 125 VAC, 300 VDC
Littelfuse

70D

Alternate Item Number: 70D00000Z

UPC: 079458061574


Documents & Media
Brochure

Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Overview

The Littelfuse 70D Alarm Indicating Fuse (SKU: 70D) is engineered for critical overcurrent protection and status monitoring within telecommunications equipment. This 5A fuse is designed to operate reliably at 125 VAC and 300 VDC, ensuring compatibility with a broad spectrum of telecommunication systems, including central offices, data centers, and network infrastructure. A key feature of the 70D is its color-coded tip. This design element provides immediate visual identification of both the fuse's ampere rating and its operational status. Technicians can quickly ascertain if a fuse has blown without the need for manual testing, significantly reducing troubleshooting time and minimizing system downtime. This rapid fault identification is crucial in high-availability environments where service interruptions must be prevented. The alarm indicating functionality is paramount for applications where immediate awareness of a blown fuse is essential to avert cascading system failures or data loss. The robust construction of the Littelfuse 70D ensures dependable performance even in demanding industrial settings. Its compact form factor facilitates easy integration into existing telecommunications equipment, and the intuitive color-coding minimizes the risk of incorrect fuse replacement. Key Specifications: - Current Rating: 5 A - Voltage Rating: 125 VAC, 300 VDC - Series: Alarm Indicating - Feature: Color-coded tip for visual status and ampere rating identification - Application: Telecommunications equipment - UNSPSC Code: 39121628 - Country of Origin: US Choose the Littelfuse 70D for dependable circuit protection and streamlined maintenance in your telecommunications infrastructure. This fuse is a vital component for ensuring the continued operation and reliability of sensitive network equipment.
  • 5A current rating for reliable overcurrent protection
  • Rated for 125 VAC and 300 VDC applications
  • Color-coded tip for instant visual identification of ampere rating and fuse status
  • Designed for use in telecommunications equipment
  • Minimizes downtime through rapid fault identification

Specifications

Application
Telecommunications
Brand Name
Littelfuse
Current Rating
5 A
Series
70D
Special Features
Color coded tip
Sub Brand
70 Series
Type
Alarm Indication Fuse
Voltage Rating
125 VAC / 300 VDC
Package Dimensions (L x W x H)
2 IN x 0.5 IN x 1 IN
Package Dimensions (L x W x H)
5.08 cm x 12.7 mm x 25.4 mm
Package Weight (Imperial)
0.500 L
Package Weight (Metric)
0.227 kg

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.