Mersen Class J Time-Delay Fuse...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$762.67
$712.67
Mersen Class J Time-Delay Fuse 250A 600VAC/500VDC with SmartSpot Indication System

Mersen Class J Time-Delay Fuse 250A 600VAC/500VDC with SmartSpot Indication System

(No reviews yet) Write a Review

Model: AJT250

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

$762.67
$712.67
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 J Time-Delay Fuse 250A 600VAC/500VDC with SmartSpot Indication System

Professional Circuit Protection with Advanced Fault Indication Technology

The Mersen Class J Time-Delay Fuse delivers reliable circuit protection with 250A rating for both AC and DC applications. Featuring 600VAC and 500VDC voltage ratings with 200 kA breaking capacity, this blade-type fuse incorporates SmartSpot indication technology for immediate fault status visibility. The GMG insulating material body with brass connection terminals ensures durable performance in professional electrical installations.

Professional Features & Benefits

  • 250A Current Rating: Provides robust protection for high-amperage circuits in commercial and industrial applications
  • Dual Voltage Capability: 600VAC/500VDC rating offers versatility for both AC and DC power systems
  • 200 kA Breaking Capacity: Delivers exceptional fault current interruption capability for enhanced system safety
  • SmartSpot Indication System: Provides immediate visual confirmation of fuse status, reducing troubleshooting time
  • Class J Design: Ensures current-limiting performance and dimensional standardization for reliable system integration
  • Time-Delay Characteristic: Allows temporary overloads while providing fast response to fault conditions
  • Blade Terminal Design: Enables secure clip or bolted mounting for versatile installation options

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 200 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 250 A
  • Body Insulating Material: GMG
  • Connection Terminal Material: Brass
  • Connection Terminal Type: Blade
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Class J
  • Indication System: Yes
  • Indication System Type: SmartSpot�
  • Mounting Method: Clip or Bolted
  • Product Length: 7.13 in
  • Product Weight: 1.79 lb
  • Rated Voltage Ac Ul: 600 V
  • Rated Voltage Dc Ul: 500 V
  • Rohs Compliant: Yes
  • Speed Characteristic: Time Delay

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 Motor Control Centers
  • Commercial Power Distribution Systems
  • Manufacturing Equipment Protection
  • Data Center Power Infrastructure
  • Healthcare Facility Electrical Systems
  • Educational Institution Power Distribution
  • Municipal and Government Facilities

Why Choose Mersen Quality?

Mersen fuses deliver proven reliability with RoHS compliant construction and professional-grade materials including GMG insulating body and brass terminals. The SmartSpot indication system and Class J current-limiting design provide enhanced safety and system performance for critical electrical protection applications.

Manufacturer Resources

Product Specs

Ac Max I R Breaking Capacity I1:
200 kA
Ac Or Dc:
AC/DC
Ampere Rating:
250 A
Body Insulating Material:
GMG
Connection Terminal Material:
Brass
Connection Terminal Type:
Blade
Frequency Hz :
50/60 Hz
Fuse Class:
Class J
Indication System:
Yes
Indication System Type:
SmartSpot®
Mounting Method:
Clip or Bolted
Product Length:
7.13 in
Product Weight:
1.79 lb
Rated Voltage Ac Ul:
600 V
Rated Voltage Dc Ul:
500 V
Rohs Compliant:
Yes
Speed Characteristic:
Time Delay

Mersen AJT250 – Frequently Asked Questions

How fast can I get the Mersen AJT250 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 AJT250 come with a warranty?
Absolutely. The Mersen AJT250 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 AJT250?
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 AJT250 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.
!