Mersen UltraSafe Class J Fuse Holder, 600VAC/600VDC

Mersen US3J3 UltraSafe Class J Fuse Holder, 600VAC/600VDC 30A 3-Pole

The Mersen US3J3 UltraSafe Class J Fuse Holder delivers dependable circuit protection for demanding industrial and commercial electrical systems. This 3-Pole, DIN Rail mount holder supports dual 600VAC/600VDC operation at 30A, with a 200 kA short circuit current rating (SCCR) for critical fault protection. Durable polyamide construction and IP65 environmental protection make it suitable for challenging panel environments, while clip-in fuse installation simplifies maintenance and service access.

Key Features

• Dual Voltage Rating: 600VAC/600VDC compatibility supports both AC and DC circuit protection in a single device.
• Ampere Rating: 30A max fuse rating for reliable overcurrent protection.
• 3-Pole Configuration: Consolidates three-phase or multi-circuit fuse protection into one compact assembly.
• High Short Circuit Rating: 200 kA SCCR delivers exceptional fault current interruption capability for critical system protection.
• IP65 Environmental Protection: Sealed enclosure guards against dust and water ingress in demanding industrial environments.
• DIN Rail Mounting: Standard rail compatibility enables quick installation and space-efficient panel integration.
• Durable Construction: Polyamide body insulating material provides excellent electrical isolation and mechanical strength.
• Clip-in Fuse Installation: Tool-free fuse replacement reduces maintenance time and improves service accessibility. Accommodates #2 to 14 AWG conductors with a 35 lb-in torque rating for secure wiring connections.

Certifications & Compliance

• RoHS Compliant
• IP65 Rated Enclosure

Technical Specifications

• Rohs Compliant: Yes

Typical Applications

• Industrial Control Panels and Motor Control Centers
• Commercial Electrical Distribution Systems
• Manufacturing Equipment Protection
• Process Control and Automation Systems
• Power Distribution in Critical Facilities
• Data Center and Telecommunications Infrastructure

Why Mersen?

Mersen UltraSafe fuse holders combine proven circuit protection engineering with practical safety features for professional electrical work. RoHS compliant construction, a durable polyamide body, and IP65 environmental sealing support long-term performance in demanding industrial settings, while the 200 kA SCCR and dual 600VAC/600VDC rating give installers confidence in critical power distribution and control panel applications.