Mersen USCC3 UltraSafe Class C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$212.96
Mersen USCC3 UltraSafe Class CC Fuse Holder, 30A 3-Pole DIN Rail Mount

Mersen USCC3 UltraSafe Class CC Fuse Holder, 30A 3-Pole DIN Rail Mount

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Model: USCC3

In Stock (leaves warehouse same day if ordered before 3pm ET)

$212.96
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Mersen USCC3I UltraSafe Class CC Fuse Holder, 600VAC/600VDC 30A 3-Pole with LED Indication

The Mersen UltraSafe Class CC Fuse Holder (USCC3I) delivers professional-grade circuit protection with dual 600VAC/600VDC voltage capability and a 30A ampere rating for Class CC fuses. This 3-pole, DIN rail mounted fuse holder features an integrated LED indication system for at-a-glance fuse status monitoring, a glass filled polycarbonate housing, clip-in fuse installation, and an IP20 enclosure rating for secure operation in industrial and commercial panels.

Key Features

  • Dual Voltage Rating: 600VAC/600VDC compatibility provides flexibility for diverse AC and DC electrical systems.
  • 30A Ampere Rating with Class CC Compatibility: Handles substantial current loads (max fuse rating 30A) while maintaining precise Class CC overcurrent protection.
  • LED Indication System: Visual fuse status monitoring enables quick identification of blown fuses and reduces troubleshooting time.
  • Glass Filled Polycarbonate Construction: Durable insulating body material provides excellent mechanical strength and thermal stability.
  • 200 kA Short Circuit Current Rating: High fault current interruption capability ensures reliable protection under severe fault conditions.
  • DIN Rail Mounting: Standard industrial mounting method enables quick installation and professional panel integration.
  • Clip-In Fuse Installation: Simple, tool-minimal fuse installation method for efficient maintenance and fuse replacement.
  • IP20 Enclosure Rating: Appropriate protection against solid objects while maintaining accessibility for servicing.

Certifications & Compliance

  • UL Rated Voltage: 600VAC / 600VDC
  • RoHS Compliant

Technical Specifications

  • Indication System: Yes
  • Indication System Type: LED
  • Rohs Compliant: Yes
  • Fuse Class: Class CC
  • Number Of Poles: 3-Pole
  • Wiring Range: Cu #6-14
  • Torque Rating: 15 lb-in
  • Frequency: 50/60 Hz

Typical Applications

  • Industrial Control Panels and Motor Control Centers
  • Commercial Electrical Distribution Systems
  • Manufacturing Equipment Protection
  • Process Control and Automation Systems
  • Power Distribution Panels
  • Electrical Maintenance and Service Applications

Why Mersen?

Mersen UltraSafe fuse holders combine dual voltage capability, LED indication, and a robust glass filled polycarbonate housing to deliver dependable, code-compliant circuit protection. With a 200 kA short circuit current rating and RoHS compliance, the USCC3I is built for long-term reliability in demanding industrial and commercial electrical environments.

Manufacturer Resources

Product Specs

Ac Or Dc:
AC/DC
Rated Voltage Ac Ul:
600 V
Number Of Poles:
3-Pole
Fuse Installation Method:
Clip-in
Product Length:
3.07 in
Product Height:
2.32 in
Wiring Range:
Cu #6-14
Fuse Type Class:
Class CC
Short Circuit Current Rating Sccr:
200 kA
Product Width:
2.07 in
Department:
Electrical
Ampere Rating:
30 A
Rohs Compliant:
Yes
Max Fuse Rating:
30 A
Product Group:
Wiring Devices
Torque Rating:
15 lb-in
Body Insulating Material:
Glass Filled Polycarbonate
Frequency Hz:
50/60 Hz
Rated Voltage Dc Ul:
600 V
Fuse Class:
Class CC
Product Weight:
0.43 lb
Installation Mounting:
DIN Rail
Product Type:
Fuse Holder

Mersen USCC3 – Frequently Asked Questions

1) What size fuses does the Mersen USCC3 fuse holder take?
Class CC fuses only, up to 30 A. The USCC3 is built around the Class CC body, so a midget or Class J fuse of the same amperage will not clip in. Fuses drop in with a clip-in installation, no tools needed to swap one out.
2) What is the difference between the Mersen USCC3 and USCC3I?
The indicator. USCC3I carries the LED blown-fuse indication, USCC3 is the plain holder with no indicator. Everything else matches: 3-pole, Class CC, 30 A, DIN rail. If the panel is deep in a machine enclosure and you want to spot an open fuse without pulling each one, order the I version.
3) Can I use this Mersen fuse holder on a DC circuit?
Yes, it is rated 600 V DC as well as 600 V AC, so it works in DC drives, battery and solar-side circuits as well as standard 50/60 Hz AC control power.
4) What wire size and torque should I use landing conductors on the USCC3?
Terminals accept copper #6 through #14, torqued to 15 lb-in. Copper only, and the wire range covers most 30 A branch and control feeds without a reducer.
5) Will the Mersen USCC3 meet a 200 kA SCCR requirement on my control panel?
The holder carries a 200 kA short circuit current rating, so it will not be the limiting component in a panel labeled to a high available fault current. The overall panel SCCR still depends on the lowest rated device in the circuit.
6) Can a Littelfuse WPB1 in-line fuse holder be used instead of the Mersen USCC3 in a control panel?
They solve different problems. The Mersen USCC3 is a 3-pole DIN rail mounted Class CC fuse holder rated 600VAC/600VDC at 30A, with a glass filled polycarbonate body, clip-in fuse installation and a Cu #6-14 wiring range torqued to 15 lb-in, so it is built to sit on the rail inside an enclosure alongside other DIN components. The Littelfuse WPB1 is an in-line watertight fuse holder, which is a cable-mounted device intended to be spliced into a run rather than mounted to a rail. If the fuse position belongs on a panel backplate with three phases landed on terminals, the USCC3 is the form factor; an in-line body would have to be supported by the wire itself.
7) How much DIN rail space does the Mersen USCC3 three-pole fuse holder take up?
It measures 3.07 x 2.32 x 2.07 inches and weighs 0.43 lb. Lay that against your rail length and wireway clearance before you finalize the panel layout, and leave room above for the fuse carriers to swing out.
8) Is this fuse holder safe to leave exposed inside a panel?
It is an IP20 finger-safe style holder with a glass filled polycarbonate body, so it is meant to sit inside an enclosure or control panel. IP20 means protection against solid objects, not against water or dust, so it is not for outdoor or washdown locations. For a wet or in-line application look at a watertight holder like the Littelfuse WPB1 Series instead.
9) Do I need one holder per phase for a three-phase motor circuit?
No. The USCC3 is a 3-pole unit, so one holder covers all three phases of a 480 V or 600 V three-phase branch. Single unit on the rail, three Class CC fuses.
10) Can I use this Mersen holder as a residential plug-fuse replacement?
No. This is a DIN rail Class CC holder for 600 V industrial and commercial panels. For a plug-fuse box cover unit at 125 V, 15 A, the Littelfuse LSRY Series is the right family instead.
11) If I need the fuse holder outdoors or in a wet location, is the Mersen USCC3 the right choice?
The Mersen USCC3 is a DIN rail device with a glass filled polycarbonate body intended for mounting inside an industrial or commercial panel, where the enclosure provides the environmental protection. Where the fuse has to live in the open on a cable run exposed to moisture, the Littelfuse WPB1 in-line watertight fuse holder is the style designed for that condition. The trade-off is poles and fuse class: the USCC3 gives you three poles for Class CC fuses up to 30A at 600V, which an in-line single-fuse body does not.
12) Does the Mersen USCC3 accept plug fuses like the ones used with a Littelfuse LSRY box cover unit?
No. The Mersen USCC3 is a Class CC holder and accepts Class CC fuses up to 30A, installed by clipping them into the holder. The Littelfuse LSRY series is a plug fuse box cover unit, which uses screw-base plug fuses at 125V 15A. The two fuse bodies are not interchangeable, so a Class CC fuse has to be specified for the USCC3 regardless of what is stocked for plug fuse applications.
13) Is the Mersen USCC3 RoHS compliant for export builds?
Yes, the UltraSafe USCC3 is RoHS compliant, which matters if the finished panel ships into markets that require it.
How fast can I get the Mersen USCC3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Mersen USCC3 come with a warranty?
Absolutely. The Mersen USCC3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Mersen USCC3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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