Mersen Class K5 Fast-Acting Fu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$55.90
$5.90

Mersen Class K5 Fast-Acting Fuse 20A 250VAC/250VDC Ferrule Terminal

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Model: OT20

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

$55.90
$5.90
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Mersen Class K5 Fast-Acting Fuse 20A 250VAC/250VDC Ferrule Terminal

Professional Fast-Acting Circuit Protection with Ferrule Terminals

The Mersen Class K5 Fast-Acting Fuse delivers reliable circuit protection for 20A applications at 250VAC/250VDC. This professional-grade fuse features ferrule terminals for secure connections, paper body insulation, and copper terminal construction. Designed for clip mounting with 50kA breaking capacity, this fast-acting fuse provides dependable overcurrent protection for electrical systems requiring precise response characteristics.

Professional Features & Benefits

  • 20A Current Rating: Provides precise overcurrent protection for medium-load electrical circuits and equipment.
  • 250VAC/250VDC Dual Voltage: Versatile voltage compatibility for both AC and DC applications in diverse electrical systems.
  • 50kA Breaking Capacity: High interrupting rating ensures safe fault current interruption in demanding electrical environments.
  • Class K5 Fast-Acting Response: Quick response time protects sensitive equipment from overcurrent conditions and electrical faults.
  • Ferrule Terminal Design: Secure copper ferrule terminals provide reliable electrical connections and easy installation.
  • Paper Body Insulation: Professional insulating material ensures safe operation and electrical isolation.
  • RoHS Compliant Construction: Environmentally responsible design meets modern regulatory standards for electrical components.

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 50 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 20 A
  • Body Insulating Material: Paper
  • Connection Terminal Material: Copper
  • Connection Terminal Type: Ferrule
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Class K5
  • Mounting Method: Clip
  • Product Length: 2 in
  • Product Weight: 0.029 lb
  • Rated Voltage Ac Ul: 250 V
  • Rated Voltage Dc Ul: 250 V
  • Rohs Compliant: Yes
  • Speed Characteristic: Fast-Acting

Installation & Operation

  1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
  2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
  3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
  4. Configure any available load management or control features as supported by the provided specifications.
  5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
  6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

  • Industrial Control Panels and Motor Control Centers
  • Commercial Electrical Distribution Systems
  • HVAC Equipment Protection
  • Lighting Control Systems
  • Power Supply and Converter Protection
  • Electronic Equipment Overcurrent Protection
  • Instrumentation and Control Circuit Protection

Why Choose Mersen Quality?

Mersen delivers professional-grade electrical protection components with proven reliability and durability. This Class K5 fast-acting fuse features RoHS compliant construction, copper terminal materials, and precise 20A rating for dependable circuit protection. The 2-inch compact design and clip mounting method ensure versatile installation options while maintaining the high breaking capacity and fast-acting response characteristics required for professional electrical applications.

Manufacturer Resources

Product Specs

Ac Max I R Breaking Capacity I1:
50 kA
Ac Or Dc:
AC/DC
Ampere Rating:
20 A
Body Insulating Material:
Paper
Connection Terminal Material:
Copper
Connection Terminal Type:
Ferrule
Frequency Hz :
50/60 Hz
Fuse Class:
Class K5
Mounting Method:
Clip
Product Length:
2 in
Product Weight:
0.029 lb
Rated Voltage Ac Ul:
250 V
Rated Voltage Dc Ul:
250 V
Rohs Compliant:
Yes
Speed Characteristic:
Fast-Acting

Mersen OT20 – Frequently Asked Questions

How fast can I get the Mersen OT20 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 OT20 come with a warranty?
Absolutely. The Mersen OT20 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 OT20?
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
Why buy the Mersen OT20 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.