Mersen MEV55C12-P EVpack Fuse 550VDC UL 12A Max. Rated Breaking Capacity DC: 20 kA @ 550 V L/R ≤ 1 ms Slot…
Alternate Item Number: MEV55C12-P
UPC: 782001483142
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Overview
- 550VDC maximum rating with 12A current rating
- 20kA interrupting rating at L/R ≤ 1ms for reliable DC fault clearing
- Slot-mount ferrule design for compact integration in battery systems
- Low watt losses and high cycling performance for efficient operation
- Minimum breaking capacity as low as 2xIn for precise cable protection matching
Specifications
Amperage Rating | 12 A |
Application | EV/HEV Battery pack protection Battery Disconnect Unit (BDU) Battery Management Systm (BMS) Battery Junction Box for auxiliaries On-Board Charging |
Brand Name | Mersen |
Connection | Slot Mount |
Connection Material | Tin-Plated Copper |
Current Rating | 12 A |
DC Voltage Rating | 550 V |
Interrupting Rating | 20 kA |
L/r Ratio | ≤ 1 ms |
Minimum Breaking Capacity | 2xIn |
Mounting | PC Mount |
Mounting Type | Slot Mount |
Series | EVpack |
Size | 1.55 x 0.41 in |
Size | 39.3 x 10.3 mm |
Special Features | Design for DC applications Low watt losses High cycling performance Full coverage of battery module voltage and current Ultra compact size Current Ratings (In): 5 to 800A Interrupting Rating (IR) for MEV55C: 20kA @550VDC, L/R = 1ms Interrupting Rating (IR) for MEV50A: 30kA @500VDC, L/R = 2.5ms |
Standard | Complies to Automotive IATF 16949:2016 Quality System IEC 60 269-4 ISO 8820-8 JAS0 D622 |
Type | Battery Pack Fuses |
Voltage Rating | 550 VDC |
Package Dimensions (L x W x H) | 1.55 in x 0.41 in x 0.62 in |
Package Dimensions (L x W x H) | 39.3 mm x 10.3 mm x 15.7 mm |
Package Weight (Imperial) | 0.022 lb |
Package Weight (Metric) | 0.010 kg |
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Frequently Asked Questions
What is the maximum DC voltage rating for these fuses?
The maximum DC voltage rating for the EVpack-fuse MEV55C and MEV50A series is 550VDC for MEV55C and 500VDC for MEV50A.
What are the typical applications for the EVpack-fuse series?
These fuses are designed for EV/HEV applications, including battery pack protection, Battery Disconnect Units (BDU), Battery Management Systems (BMS), and on-board charging.
What are the available current ratings for the MEV55C fuses?
The MEV55C fuses have current ratings (In) ranging from 5A to 50A.
What are the available current ratings for the MEV50A fuses?
The MEV50A fuses have current ratings (In) ranging from 60A to 800A.
What standards do these EVpack-fuses comply with?
The fuses comply with Automotive IATF 16949:2016 Quality System (China only), IEC 60 269-4, and ISO 8820-8.
What is the interrupting rating (IR) for the MEV55C fuses?
The interrupting rating (IR) for the MEV55C is 20kA at 550VDC.
What is the interrupting rating (IR) for the MEV50A fuses?
The interrupting rating (IR) for the MEV50A is 30kA at 500VDC.
What are the available mounting styles for the MEV55C fuses?
The MEV55C fuses are available in Ferrule Fuse, PC Board Mount (-P), and Surface Mount (-S) styles.
What is the operating temperature range for the MEV55C and MEV50A fuses?
The operating temperature range for these fuses is -40°C to 125°C.
What is the L/R time constant for the MEV55C fuses?
The L/R time constant for the MEV55C fuses is less than or equal to 1ms.
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.