Mersen PCT20-R Fuse PCT - Midget - Time-Delay 500VAC 20A Slot Mount
Alternate Item Number: PCT20-R
UPC: 782001906009
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Multiplier: 100
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Overview
- Direct PCB mounting eliminates need for clips or fuseholders
- Time-delay design handles inrush currents safely
- Rated 500VAC, 20A with 100kA interrupting rating
- UL Component Recognized (File E60314)
- Compatible with automated assembly processes
Specifications
AC Voltage Rating | 500 V |
Amperage Rating | 20 A |
Application | Protection of main frame power boards, circuit breakers, components |
Body Material | GMG |
Brand Name | Mersen |
Class | Midget |
Connection | Slot Mount |
Connection Material | Tin-Plated Copper |
Connection Type | Slot Mount |
Current Rating | 20A |
Interrupt Rating | 100 kA |
Mounting | PC Mount |
Mounting Type | Direct-mountable |
Series | PCT |
Size | 1.53 x 0.41 in |
Size | 38.862 x 10.414 mm |
Size | Midget |
Special Features | Time-delay PC board mount Three mounting styles |
Standard | UL Recognized Components File E60314 |
Type | Midget Fuses |
Voltage Rating | 500 VAC |
Package Dimensions (L x W x H) | 1.53 in x 0.41 in x 0.41 in |
Package Dimensions (L x W x H) | 38.862 mm x 10.414 mm x 10.414 mm |
Package Weight (Imperial) | 0.020 lb |
Package Weight (Metric) | 0.009 kg |
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Frequently Asked Questions
What are the voltage and amperage ratings for PCT fuses?
PCT fuses are rated for 500VAC and amperage from 1 to 30A.
What is the interrupting rating for these fuses?
The interrupting rating (I.R.) for these fuses is 100kA.
What type of fuse is the Mersen PCT series?
The Mersen PCT series are time-delay, direct-mountable fuses designed for PC board mounting.
What applications are Mersen PCT fuses used for?
They are used for protection of main frame power boards, circuit breakers, and other components.
Are Mersen PCT fuses UL recognized?
Yes, Mersen PCT fuses are UL Recognized Components with File E60314.
What mounting styles are available for PCT fuses?
PCT fuses are available in three mounting styles: Slot Mount, Double Hole Mount, and Surface Mount.
What are the benefits of using PCT fuses on PC boards?
PCT fuses reduce parts by eliminating clips and fuse blocks, allowing automated assembly.
What is the purpose of the time-delay feature in PCT fuses?
The time-delay feature provides protection with greatly increased ampere, voltage, and interrupting ratings to the board itself.
What is the nominal thickness of the circuit board for mounting?
The mounting hole detail is for a 0.062 (1.6) nominal circuit board thickness.
What is the maximum recommended screw size for surface mount PCT fuses?
The maximum recommended screw size for surface mount PCT fuses is 3.5mm.
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.