Mersen Class J Time-Delay Fuse...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$797.50
$747.50

Mersen Class J Time-Delay Fuse 225A 600VAC/500VDC with SmartSpot Indication System

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Model: AJT225

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

$797.50
$747.50
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Mersen Class J Time-Delay Fuse 225A 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 225A rating for both AC and DC applications. Featuring dual voltage capability of 600VAC and 500VDC, this professional-grade fuse incorporates SmartSpot indication technology for immediate fault status visibility. The blade terminal design with brass connections ensures secure mounting via clip or bolted installation methods, while the GMG body material provides superior insulating properties for demanding electrical environments.

Professional Features & Benefits

  • 225A Current Rating: Handles high-amperage loads with reliable overcurrent protection for demanding applications
  • Dual Voltage Capability: 600VAC/500VDC rating provides versatility for both AC and DC circuit protection requirements
  • SmartSpot Indication System: Visual fault indication technology enables immediate status assessment without testing equipment
  • 200kA Breaking Capacity: High interrupting rating ensures safe fault current interruption in high-energy electrical systems
  • Time-Delay Characteristic: Allows temporary overloads while providing fast response to fault conditions
  • Class J Design: Current-limiting construction reduces let-through energy and protects downstream equipment
  • Brass Blade Terminals: Corrosion-resistant connections ensure long-term electrical integrity and reliable contact

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 200 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 225 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 and Distribution Panels
  • Commercial HVAC and Lighting Systems
  • Data Centers and Critical Power Infrastructure
  • Manufacturing Equipment Protection
  • Renewable Energy Systems and Battery Storage
  • Healthcare and Emergency Services Facilities
  • Educational and Government Buildings

Why Choose Mersen Quality?

Mersen fuses deliver proven reliability with RoHS compliant construction and professional-grade materials. The GMG insulating body and brass terminal construction ensure long-term performance, while the 200kA breaking capacity provides confidence in high-energy fault protection applications.

Manufacturer Resources

Product Specs

Ac Max I R Breaking Capacity I1:
200 kA
Ac Or Dc:
AC/DC
Ampere Rating:
225 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 AJT225 – Frequently Asked Questions

How fast can I get the Mersen AJT225 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 AJT225 come with a warranty?
Absolutely. The Mersen AJT225 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 AJT225?
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 AJT225 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.