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Overview
- Rated for 750VAC/750VDC and 30A continuous current
- Designed for IEC cylindrical fuses (14 x 51mm or 22 x 58mm)
- Reinforced pressure plate connector for secure wire retention
- High conductivity tin-plated copper clips with spring reinforcement
- Phenolic insulator with dielectric strength exceeding 2500V
Specifications
AC Voltage Rating | 750 V |
Amperage Rating | 30 A |
Application | All circuits up to 750 volts using semiconductor fuses for protection of small inverters, UPS systems, motor drives, etc. |
Brand Name | Mersen |
Class | IEC Cylindrical 14x51mm |
Connection | Pressure Plate with Reinforced Clip |
Connection Type | Pressure Plate |
Current Rating | 30A |
DC Voltage Rating | 750 V |
Material | Phenolic/Copper |
Material | Tin-Plated Copper |
Material | Thermoplastic |
Maximum Operating Temperature | 80 C |
Mounting | Direct Screw Mount |
Mounting Type | DIN-rail adapter (U710) |
Number Of Poles | 1 |
Phase | 1 |
Poles | 1P |
Poles | 1-pole |
Series | 703, U705, U710 |
Size | 3 x 1.06 x 1.37 in |
Size | 76.2 x 26.924 x 34.798 mm |
Size | 14 x 51mm or 22 x 58mm |
Size | 14 x 51mm or 22 x 58mm IEC Cylindrical fuses |
Special Features | Thermoplastic bases DIN-rail (U710) or Screw Mount Adder block design |
Standard | UL Recognized component guide IZLT2, File E52283 CSA Certified class 6225, File 32169 |
Type | Semiconductor & Special Purpose Fuse Bases & Accessories |
Voltage Rating | 750 VAC |
Package Dimensions (L x W x H) | 3 in x 1.06 in x 1.37 in |
Package Dimensions (L x W x H) | 76.2 mm x 26.924 mm x 34.798 mm |
Package Weight (Imperial) | 0.120 lb |
Package Weight (Metric) | 0.054 kg |
LFPSC0001Z
The Littelfuse LFPSC fuse holder is designed to hold Class CC fuses. Features/Benefits: Finger-Safe design offers personnel protection; Compact design; 35 mm DIN Rail Mountable; No fuse pullers or tools required for fuse removal; Indication option available.
Frequently Asked Questions
What is the dielectric strength of the insulator?
The phenolic insulator provides dielectric strength exceeding 2500V, ensuring safe operation in high-voltage applications.
What certifications does the 70326 meet?
The 70326 is UL 4248 and CSA certified, ensuring compliance with industrial safety standards.
What is the maximum operating voltage?
The 70326 operates at a maximum of 750VAC or 750VDC, suitable for high-voltage industrial applications.
What fuse types are compatible with the 70326?
The 70326 is designed for IEC cylindrical fuses in sizes 14 x 51mm or 22 x 58mm. It supports Class H, K, and R fuse types.
What wire sizes are compatible with the 70326?
The 70326 accommodates conductor sizes from 14 AWG to 10 AWG (2.5mm² to 6mm²) for solid or standard copper wire.
Does the 70326 support multi-pole configurations?
No, the 70326 is a 1-pole fuse block and does not support adder poles for multi-pole configurations.
How to Install the Mersen 70326 Fuse Block
Step-by-step guide for mounting and wiring the 70326 fuse block
Estimated time: 15m
Tools needed:
Screwdriver, Wire strippers
Supplies needed:
Mounting screws (#10, 0.190" dia.), IEC cylindrical fuse
- Mount the fuse block
Secure the fuse block to the mounting surface using #10 mounting screws (0.190" diameter). Ensure proper alignment for adjacent blocks if used.
- Connect the wires
Insert the stripped copper wire into the pressure plate connector. Tighten the pressure plate screw to secure the wire firmly.
- Insert the fuse
Place the IEC cylindrical fuse (14 x 51mm or 22 x 58mm) into the fuse holder. Ensure the fuse is seated correctly for proper contact.
- Verify installation
Check all connections for tightness and ensure the fuse is properly seated. Apply power and verify the circuit operates as expected.
Frequently Asked Questions about Mersen
What industries and applications are Mersen products used for?
Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.
What are the main product lines offered by Mersen?
Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.
What are the key features of Mersen products?
Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.
What environmental ratings do Mersen products have?
Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.
What accessories are available for Mersen products?
Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.
How are Mersen products typically installed?
Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.
What certifications and standards do Mersen products comply with?
Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.
What technical support does Mersen offer?
Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.