
Contact for Pricing
Overview
- First UL Listed 600V AC and DC Class L fuse
- Eliminates risk of AC-only fuse insertion into DC circuits
- UL Listed DC interrupting rating: 50,000 amperes at 16ms time constant
- Capable of performing at much longer time constants
- Uniquely suited for crane rail circuits and mass transit systems
Specifications
Amperage Rating | 600 Amps |
Application | Inverters/UPS/DC distribution |
Brand Name | Littelfuse |
Special Features | Current-limiting |
Standard | UL Listed/ CSA Certified |
Sub Brand | POWR-PRO |
Type | Fast-Acting |

GPM-SRR90
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
C331156
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
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 circuit protection does Littelfuse offer?
Littelfuse offers a comprehensive line of fuses, fuse holders, protection relays, and timers for industrial applications. These products minimize electrical safety hazards and limit equipment damage.
Where can I find technical support for Littelfuse products?
Technical experts at Littelfuse Techline can answer questions regarding fuse and relay products. They can be reached at +1-800-TEC-FUSE or [email protected].
What are Littelfuse high-speed fuses used for?
High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters, variable-speed drives, UPS, and DC drive systems.
Does Littelfuse provide arc-flash protection solutions?
Yes, Littelfuse offers arc-flash protection relays. These relays detect developing arc-flash incidents and send a trip signal to interrupt power before significant damage occurs.
What is the Littelfuse Shock-Block GFCI designed for?
The Industrial Shock-Block GFCI is a special-purpose GFCI designed for people protection in industrial facilities. It meets UL Standard 943C Class C and Class D.
What is the purpose of Littelfuse resistance grounding?
High-resistance grounding limits point-of-fault damage and eliminates arc-flash hazards and transient overvoltages associated with ground faults. NGR monitors detect grounding circuit failures.
How do Littelfuse ground-fault protection relays work?
These sensitive relays feature advanced filtering to quickly and reliably detect the breakdown of insulation resistance. This breakdown can be caused by moisture, vibration, chemicals, or dust.
Does Littelfuse offer solutions for motor protection?
Yes, Littelfuse provides voltage monitors, current monitors, and Bluetooth enhanced overload relays for low and medium voltage motor applications.
What kind of protection does Littelfuse offer for pumps?
Littelfuse offers pump controllers, intrinsically safe relays, alternating relays, liquid level and seal leak detectors, and power monitors for pump protection.
How do trailing-cable protection relays function?
These relays continuously monitor the integrity of the ground conductor in portable cables. They protect cable-fed equipment from hazardous voltages caused by 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.











