Mersen OTM20 Midget Fast-Actin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.30
$8.30

Mersen OTM20 Midget Fast-Acting Fuse 250VAC 20A Ferrule Terminal Amp-Trap Protection

(No reviews yet) Write a Review

Model: OTM20

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

$58.30
$8.30
Adding to cart… The item has been added
Free Shipping on orders over $99
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks

Mersen OTM20 Midget Fast-Acting Fuse 250VAC 20A Ferrule Terminal Amp-Trap Protection

Professional Fast-Acting Circuit Protection for Critical Applications

The Mersen OTM20 Midget Fast-Acting Fuse delivers reliable 20A circuit protection at 250VAC with professional-grade Amp-Trap technology. Featuring tin-plated copper ferrule terminals and paper body insulation, this midget-class fuse provides 10 kA breaking capacity for demanding electrical applications requiring fast-acting overcurrent protection.

Professional Features & Benefits

  • 20A Current Rating: Provides precise overcurrent protection for circuits up to 20 amperes, ensuring reliable operation within safe parameters.
  • 250VAC Voltage Rating: Designed for standard commercial and industrial voltage applications with proven performance reliability.
  • Fast-Acting Response: Rapid fault clearing minimizes equipment damage and reduces downtime in critical electrical systems.
  • 10 kA Breaking Capacity: High interrupting rating handles substantial fault currents safely, providing robust protection in demanding environments.
  • Ferrule Terminal Design: Tin-plated copper terminals ensure secure connections and excellent conductivity for long-term reliability.
  • Midget Class Construction: Compact 1.5-inch length fits standard midget fuse holders while delivering full protection capability.
  • RoHS Compliant: Meets environmental standards for responsible electrical component manufacturing and installation.

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 10 kA
  • Ac Or Dc: AC
  • Ampere Rating: 20 A
  • Body Insulating Material: Paper
  • Connection Terminal Material: Tin-Plated Copper
  • Connection Terminal Type: Ferrule
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Midget
  • Mounting Method: Clip
  • Product Length: 1.5 in
  • Product Weight: 0.012 lb
  • Rated Voltage Ac 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

  • Commercial Building Electrical Panels
  • Industrial Control Circuits
  • Motor Control Centers
  • HVAC System Protection
  • Lighting Circuit Protection
  • Equipment Branch Circuits
  • Electrical Distribution Systems

Why Choose Mersen Quality?

Mersen delivers proven electrical protection solutions with RoHS compliant manufacturing and professional-grade construction. The tin-plated copper terminals and paper body insulation provide long-term reliability, while the compact midget class design ensures versatile installation compatibility across diverse electrical applications.

Manufacturer Resources

Product Specs

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

Mersen OTM20 – Frequently Asked Questions

How fast can I get the Mersen OTM20 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 OTM20 come with a warranty?
Absolutely. The Mersen OTM20 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 OTM20?
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 OTM20 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.