Mersen Class K5 Fast-Acting Bl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$150.39
$100.39
Mersen Class K5 Fast-Acting Blade Fuse 125A 250VAC/250VDC Amp-Trap Protection System

Mersen Class K5 Fast-Acting Blade Fuse 125A 250VAC/250VDC Amp-Trap Protection System

(No reviews yet) Write a Review

Model: OT125

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

$150.39
$100.39
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
You may also like

Mersen Class K5 Fast-Acting Blade Fuse 125A 250VAC/250VDC Amp-Trap Protection System

Professional overcurrent protection with fast-acting response and high interrupting capacity

Mersen Class K5 Fast-Acting Blade Fuse delivers reliable overcurrent protection for electrical systems requiring 125A capacity at 250VAC/250VDC. This professional-grade Amp-Trap fuse features fast-acting response characteristics with 50 kA interrupting capacity, PolyTube insulating material construction, and tin-plated copper blade terminals for secure clip mounting installation.

Professional Features & Benefits

  • 125A Ampere Rating: Provides precise overcurrent protection for high-capacity electrical circuits and equipment applications.
  • Class K5 Fast-Acting Response: Delivers rapid fault clearing to minimize equipment damage and enhance system protection reliability.
  • 50 kA Breaking Capacity: Handles high fault currents safely, ensuring robust protection in demanding electrical environments.
  • 250VAC/250VDC Dual Voltage Rating: Versatile protection for both AC and DC applications across multiple system configurations.
  • Blade Terminal Design: Tin-plated copper terminals ensure reliable connections and easy clip mounting installation.
  • PolyTube Insulating Material: Durable construction provides excellent electrical insulation and mechanical protection.
  • RoHS Compliant: Meets environmental standards for safe installation in commercial and industrial applications.

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 50 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 125 A
  • Body Insulating Material: PolyTube
  • Connection Terminal Material: Tin-Plated Copper
  • Connection Terminal Type: Blade
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Class K5
  • Mounting Method: Clip
  • Product Length: 7.13 in
  • Product Weight: 0.733 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 fuse in a suitable fuse holder or disconnect 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 Motor Control Centers
  • Commercial Electrical Distribution Panels
  • HVAC Equipment Protection
  • Manufacturing Process Equipment
  • Data Center Power Distribution
  • Healthcare Facility Critical Systems
  • Educational Institution Electrical Infrastructure

Why Choose Mersen Quality?

Mersen Class K5 Fast-Acting Blade Fuse combines proven reliability with professional-grade construction, featuring RoHS compliant materials and precision engineering. The robust PolyTube insulating material and tin-plated copper terminals ensure long-term performance and dependable overcurrent protection for critical electrical systems.

Manufacturer Resources

Product Specs

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

Mersen OT125 – Frequently Asked Questions

How fast can I get the Mersen OT125 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 OT125 come with a warranty?
Absolutely. The Mersen OT125 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 OT125?
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 OT125 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.
!