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Mersen B223515 - Fuse Holder UltraSafe™ 800VAC 800VDC UL Fuse size 27x60 1-Pole Visual Indicator Ring lug IP20

Mersen B223515 Fuse Holder UltraSafe™ 800VAC 800VDC UL Fuse size 27x60 1-Pole Visual Indicator Ring lug…

Alternate Item Number: US27IRING


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Specification Sheet

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Overview

The Mersen B223515 UltraSafe™ 1-pole fuse holder is engineered for 27x60 fuse-links with a maximum rating of 800VAC and 800VDC, making it suitable for high-voltage industrial applications. This compact fuse holder features a ring lug connection for secure, vibration-resistant wiring and a built-in visual blown-fuse indicator for immediate status verification without tools. The tool-free fuse replacement mechanism enables rapid maintenance with a simple finger flick, reducing downtime in critical operations. Constructed from high-performance thermoplastic or thermoset materials, the B223515 delivers long-term reliability and resistance to harsh environmental conditions, including temperature extremes and chemical exposure. Its modular design allows for flexible integration into existing systems, and it can be paired with auxiliary microswitches (sold separately) for remote indication of fuse status. Typical applications include semiconductor circuits, motor drives, UPS systems, power conversion equipment, and other high-voltage protection scenarios where reliable overcurrent interruption is essential.
  • 1-pole fuse holder for 27x60 fuse-links
  • Rated for 800VAC and 800VDC applications
  • IP20 finger-safe design with visual blown-fuse indicator
  • Ring lug connection for secure wiring
  • Tool-free fuse replacement with modular compatibility

Specifications

AC Voltage Rating
800 V
Amperage Rating
140 A
Application
All circuits up to 800V using semiconductor fuses for protection of small inverters, UPS systems, motor drives, etc. Non-load operation
Brand Name
Mersen
Connection Type
Ring Lug
DC Voltage Rating
800 V
IP Rating
IP20
Material
thermoplastic or thermoset
Material
Thermoplastic/Thermoset
Maximum Operating Temperature
60 C
Minimum Operating Temperature
-25 C
Mounting
DIN rail acc. EN 60715
Mounting Type
Tool-free
Number of poles
1
Operating Temperature, Maximum
140 F
Operating Temperature, Minimum
-13 F
Poles
1-pole
Series
Modulostar UltraSafe
Series
UltraSafe
Size
27x60
Size
Size 27x60
Size
3.68 x 1.57 x 11.89;93.47 x 39.88 x 302.01 in;mm
Special Features
Finger safe Degree of protection: IP20 Optional visual blown fuse indicator & microswitch Designs available for DIN rail mounting and direct mounting on board Modular design Multi-pole assembly kit available Plastic material UL94V2 mini Flame retardant materials with glow wire flammability index to 960°C
Standard
IEC 60269-2 and IEC 60947-3 Compliance UL4248-1 Compliant RoHS Compliant Plastic material: NF 16101 & 16102 Requirement 2 Compliant CCC (screw terminal connection only)
Sub Brand
Modulostar®
Type
UL/CSA Fuse Holders
Voltage Rating
800VAC 800VDC
Voltage Rating
800VAC/800VDC
Package Dimensions (L x W x H)
3.68 in x 1.57 in x 11.89 in
Package Dimensions (L x W x H)
93.47 mm x 39.88 mm x 302.01 mm
Package Weight (Imperial)
0.668 lb
Package Weight (Metric)
0.303 kg
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Frequently Asked Questions

What is the operating temperature range for these fuse holders?

The operating temperature range for these fuse holders is from -25°C to 60°C.

What types of fuse links are compatible with these fuse holders?

These fuse holders are designed for cylindrical fuse links of size 27x60 or J60.

What is the flame retardancy rating of the plastic material?

The plastic material is UL94V2 and flame retardant with a glow wire flammability index to 960°C.

What is the maximum operating voltage and current rating?

The UL ratings for these fuse holders are 800V AC/DC and 150A, with a SCCR of 200 kA.

What is the recommended tightening torque for the terminals?

The recommended tightening torque for the terminals is 3.5Nm (30lbs-in).

How are these fuse holders mounted?

They are designed for installation on DIN rails to EN 60715 or for direct mounting on a board using M4 screws.

What is the degree of protection for Modulostar fuse-holders?

Modulostar modular fuse-holders are finger-safe and provide an IP20 grade of protection.

What are the wire connection capabilities for these fuse holders?

They accept rigid wire from 1.5-50mm² and multistrand wire from 1.5-16mm².

Are microswitches available for remote indication?

Yes, microswitches are available and can be supplied with the holders or ordered separately for remote indication.

What is the minimum operational voltage for auxiliary switches?

The minimum operational voltage for auxiliary switches is 20V AC/DC.

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.