Mersen T229120 - NH plastic base Size NH00 1000VAC 1000VDC 160A 3-Pole Screw Connection Screw Indirect touch protection IP20
Mersen

T229120

Alternate Item Number: BB003SFSBLOC

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Overview

The Mersen T229120 NH00 3-pole plastic fuse-base is a high-integrity component designed for IEC NH fuse systems, delivering reliable overcurrent protection in industrial and commercial electrical installations. Rated for 1000VAC and 1000VDC with a continuous current capacity of 160A, this fuse-base is optimized for applications requiring high dielectric strength and thermal stability. The three-pole design supports parallel mounting in compact configurations, with phase-partition walls included for enhanced safety and reduced risk of phase-to-phase faults. Constructed from a single-part plastic base, the T229120 ensures robust mechanical integrity while maintaining a compact footprint (122mm x 100mm x 59.5mm). The silver-plated electrolytic copper contact springs, formed from a single piece, provide low-resistance electrical paths and are reinforced by highly resilient captive steel springs to withstand thermal stress up to 6kV impulse withstand voltage. Screw connections (M8) with indirect touch protection (IP20) comply with IEC 60269-1/-2 and NF EN 60269-1 standards, ensuring operator safety in compliance with global electrical safety regulations. Compatible with NH fuse-links (size 00) and gPV fuse-links (size 121), the T229120 supports both AC and DC applications, including photovoltaic systems. Optional accessories such as striker-operated microswitches (250VAC/10A) enable remote fault indication, while plug-on covers clip onto contact springs for added protection. The fuse-base is designed for screw mounting (M10, torque 8-10Nm) and is suitable for use in motor feeders, industrial cabinets, and renewable energy systems where high breaking capacity and fault isolation are critical. Key benefits include high dielectric strength, IP20 indirect touch protection, and compliance with international standards for low-voltage fuse systems. The T229120 is ideal for OEMs, panel builders, and electrical contractors seeking a dependable, code-compliant solution for NH fuse applications.
  • Rated for 1000VAC and 1000VDC with 160A continuous current
  • 3-pole design with phase-partition walls for compact parallel mounting
  • Silver-plated copper contact springs with captive steel spring reinforcement
  • Indirect touch protection (IP20) and compliance with IEC 60269-1/-2
  • Compatible with NH fuse-links (size 00) and gPV fuse-links (size 121)

Specifications

AC Voltage Rating
1000 V
Amperage Rating
160 A
Application
For fuse-links with rated voltages up to 1000VAC and 1000VDC
Brand Name
Mersen
Connection
Screw
Connection Type
Screw Connection
Current Rating
160A
DC Voltage Rating
1000 V
IP Rating
IP20
Material
Plastic
Mounting
Screw
Mounting Type
Parallel rows with phase-partition walls
Number Of Poles
3
Poles
3-pole
Size
3.35 x 4.09 x 5.71 in
Size
85 x 104 x 145 mm
Size
NH00
Special Features
Polyamide insulating bases Silver-plated contacts High-pressure spring contacts Screw or rail mounting Connecting cable: 50mm Multipolar bases possible by direct linkage in 00 size and with separator accessory in sizes 0, 1, 2 and 3 Variety of options for protecting active parts through use of accessories: separating plates, separator, cover shields and fuse cover Dual cable-connection system on 00 size: by screw or clamp
Standard
IEC 60269 Compliance Dimensions in accordance with DIN 43620 DIN VDE 0636-2, 0636-21
Type
IEC NH Fuse Bases
Voltage Rating
1000VAC 1000VDC
Package Dimensions (L x W x H)
3.35 in x 4.09 in x 5.71 in
Package Dimensions (L x W x H)
85 mm x 104 mm x 145 mm
Package Weight (Imperial)
1.168 lb
Package Weight (Metric)
0.530 kg
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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.