Mersen Class L Time-Delay Fuse...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,664.31
$1,614.31

Mersen Class L Time-Delay Fuse 1000A 600VAC/300VDC Blade Terminal Amp-Trap

(No reviews yet) Write a Review

Model: A4BY1000

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

$1,664.31
$1,614.31
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 Class L Time-Delay Fuse 1000A 600VAC/300VDC Blade Terminal Amp-Trap

Professional High-Amperage Circuit Protection with Time-Delay Characteristics

The Mersen Class L Time-Delay Fuse delivers reliable circuit protection for high-amperage applications requiring 1000A capacity. Engineered with dual voltage ratings of 600VAC and 300VDC, this blade terminal fuse features GMG body insulating material and silver-plated copper terminals for superior conductivity and durability. The time-delay characteristic provides enhanced protection against temporary overloads while ensuring fast clearing of fault conditions.

Professional Features & Benefits

  • 1000A Ampere Rating: Handles high-current applications with reliable overcurrent protection for demanding electrical systems.
  • Class L Design: Meets stringent industry standards for current-limiting performance and arc interruption capability.
  • Time-Delay Characteristic: Allows temporary overloads while providing fast fault clearing, reducing nuisance tripping in motor and transformer applications.
  • 200 kA Breaking Capacity: Provides exceptional fault current interruption capability for high-fault current installations.
  • Dual Voltage Rating: Supports both 600VAC and 300VDC applications for versatile system compatibility.
  • Silver-Plated Copper Terminals: Ensures optimal electrical conductivity and corrosion resistance for long-term reliability.
  • GMG Body Construction: Delivers superior insulation properties and mechanical strength for demanding environments.

Technical Specifications

  • Ac Max I R Breaking Capacity I1: 200 kA
  • Ac Or Dc: AC/DC
  • Ampere Rating: 1000 A
  • Body Insulating Material: GMG
  • Connection Terminal Material: Silver-Plated Copper
  • Connection Terminal Type: Blade
  • Frequency Hz : 50/60 Hz
  • Fuse Class: Class L
  • Mounting Method: Bolted
  • Product Length: 10.75 in
  • Product Weight: 4.28 lb
  • Rated Voltage Ac Ul: 600 V
  • Rated Voltage Dc Ul: 300 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 Facility 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 precision engineering. The robust GMG insulating material and silver-plated copper terminals ensure long-term performance in demanding electrical environments, backed by comprehensive UL ratings for both AC and DC applications.

Manufacturer Resources

Product Specs

Ac Max I R Breaking Capacity I1:
200 kA
Ac Or Dc:
AC/DC
Ampere Rating:
1000 A
Body Insulating Material:
GMG
Connection Terminal Material:
Silver-Plated Copper
Connection Terminal Type:
Blade
Frequency Hz :
50/60 Hz
Fuse Class:
Class L
Mounting Method:
Bolted
Product Length:
10.75 in
Product Weight:
4.28 lb
Rated Voltage Ac Ul:
600 V
Rated Voltage Dc Ul:
300 V
Rohs Compliant:
Yes
Speed Characteristic:
Time Delay

Mersen A4BY1000 – Frequently Asked Questions

How fast can I get the Mersen A4BY1000 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 A4BY1000 come with a warranty?
Absolutely. The Mersen A4BY1000 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 A4BY1000?
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 A4BY1000 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.