Mersen M200U12 UL 98 Non-Fusible Switch 600VAC 200A 3-Pole Configuration: 1-2
Alternate Item Number: M200U12
UPC: 782001462604
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- UL 98 listed non-fusible disconnect switch
- 600VAC, 200A, 3-pole configuration
- Capable of fully rated load-break and load-make
- Service entrance rated
- Compact size with modular handle placement
Specifications
AC Voltage Rating | 600 V |
Amperage Rating | 200 A |
Application | Service entrance or main panel disconnects “Make and break” power circuit applications on load Electrical isolation Safety switch |
Brand Name | Mersen |
Connection | Terminal |
Connection Type | Screw Terminal |
Current Rating | 200 A |
DC Voltage Rating | 250 V |
Material | Heavy-duty construction |
Maximum Operating Temperature | 40 C |
Minimum Operating Temperature | -5 C |
Mounting Type | Direct Screw Mount |
Number Of Poles | 3 |
Poles | 3-pole |
Poles | 3 |
Series | M200U |
Size | 6.69 x 6.67 x 2.76 in |
Size | 169.926 x 169.418 x 70.104 mm |
Special Features | Service entrance rated Front or side operation Most compact size Internally mounted auxiliary contacts Flange mounting accessories Flexible mounting Adjustable shaft depth |
Standard | All UL switches meet the requirements of UL and CSA UL listed guide WHTY, File E191605 for UL 98 (ratings from 30 A to 1200 A) IEC 60947-3 |
Type | UL 98 Non Fusible |
Voltage Rating | 600VAC |
Voltage Rating | 600 VAC |
Package Dimensions (L x W x H) | 6.69 in x 6.67 in x 2.76 in |
Package Dimensions (L x W x H) | 169.926 mm x 169.418 mm x 70.104 mm |
Package Weight (Imperial) | 3.470 lb |
Package Weight (Metric) | 1.574 kg |

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The NNC75X75WH2 Halogen-Free Wide Slot Wiring Duct is used to route, protect, and manage wires near sensitive electronic equipment and in environments where heat resistance or public safety is a concern. UL 94 flame class of V-0 with a UL recognized continuous-use temperature up to 95 C (203 F). Halogen-Free, Polyphenylene Oxide (PPO). Mounting holes provided. 2.85" x 2.97" (72.4 mm x 75.4 mm) and 6.6' (2 m) long. Cover included. Color White. 5 pieces per package.Frequently Asked Questions
Are these switches UL listed and CE marked?
Yes, they are listed to UL 98 and bear the CE mark for conformance to IEC 60947-3.
What is the maximum operating voltage for Mersen disconnect switches?
The maximum operating voltage for these switches is 600VAC.
What are the available ampacity ratings for Mersen non-fusible disconnect switches?
Available ampacity ratings include 30A, 60A, 100A, 200A, 400A, 600A, 800A, and 1200A.
Can auxiliary contacts be added to these switches?
Yes, normally closed, normally open, and combined NO+NC auxiliary contacts are available, as well as an 8-contact module.
What is the Short-Circuit Current Rating (SCCR) for these switches?
The SCCR is up to 200kA when used with fuses and is suitable as a motor disconnect.
What types of handles are available for Mersen disconnect switches?
Various handles are available, including direct front operation locking handles and external front operation pistol style handles.
What are the DC ratings for the M1200U switch?
The M1200U has a DC current rating of 600A at 250VDC and 200A at 600VDC.
What is the maximum fuse size for a 600A switch at 415V?
The maximum fuse size (gG/aM) for a 600A switch at 415V is 600A.
What is the mechanical endurance rating for Mersen disconnect switches?
The mechanical endurance is rated for 20,000 operations for most models, with some higher ampacity models having lower ratings.
What is the power loss per pole for a 1200A switch at rated current?
The power loss per pole for a 1200A switch at rated operational current is 48W.
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.













