Mersen Amp-Trap A50P Series Hi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$80.74
Mersen Amp-Trap A50P Series High-Speed Fuse, 500VAC/450VDC, Blade Terminal

Mersen Amp-Trap A50P Series High-Speed Fuse, 500VAC/450VDC, Blade Terminal

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Model: A50P30-1

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

$80.74
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Mersen Amp-Trap A50P Series High-Speed Fuse, 500VAC/450VDC, Blade Terminal

The Mersen Amp-Trap A50P Series is a line of high-speed fuses engineered for fast-acting overcurrent protection in demanding industrial and commercial power systems, with dual voltage capability of 500VAC/450VDC. Built with a GMG insulating body and tin-plated copper blade terminals for secure, bolted mounting, this series delivers a 25 kA breaking capacity for reliable performance under significant fault conditions, with current ratings such as 40A available within the line. The high-speed characteristic and compact, lightweight construction make these fuses well suited to protecting sensitive equipment where fast clearing is critical. Bolted blade-terminal mounting simplifies installation and servicing while maintaining a secure, low-resistance connection point in the circuit.

Key Features

  • Dual Voltage Capability (500VAC/450VDC): Versatile protection for both AC and DC systems with high voltage tolerance for industrial applications.
  • High-Speed Characteristic: Fast-acting response protects sensitive equipment from damage during fault conditions.
  • 25 kA Breaking Capacity: High interrupting rating handles significant fault currents safely and reliably.
  • Blade Terminal Design: Secure bolted mounting with tin-plated copper terminals ensures reliable electrical connections and easy installation.
  • GMG Insulating Material: Professional-grade body construction provides excellent electrical insulation and mechanical durability.
  • Compact, Lightweight Build: Space-saving dimensions support versatile installation options across panels and enclosures.
  • Current Rating Options: Available in ratings such as 40A to match a range of medium-load circuit and equipment protection needs.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Product Material: GMG

Typical Applications

  • Industrial Motor Control Centers
  • Commercial HVAC Systems
  • Power Distribution Panels
  • Manufacturing Equipment Protection
  • Data Center Power Systems
  • Renewable Energy Installations

Why Mersen?

Mersen builds the Amp-Trap A50P Series with a GMG insulating body, tin-plated copper blade terminals, and RoHS-compliant construction for dependable, code-conscious performance. A 25 kA breaking capacity paired with a dual 500VAC/450VDC rating delivers the fast-acting, high-speed overcurrent protection professionals rely on for critical electrical infrastructure. Its blade-terminal design and compact footprint make it a practical choice for engineers standardizing high-speed fuse protection across motor control centers, power distribution panels, and other demanding installations.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Product Type:
Fuse
Product Material:
GMG
Voltage Rating:
500VAC/450VDC
Connection Type:
Blade Terminal
Product Finish:
Tin-Plated Copper
Standards:
RoHS Compliant
Department:
Electrical
Product Group:
Wiring Devices

Mersen A50P30-1 – Frequently Asked Questions

1) What amp ratings does the Mersen A50P high-speed fuse come in?
Three ratings in the Amp-Trap A50P blade-terminal line: 30A (A50P30-1), 40A (A50P40-4) and 60A (A50P60-4). All three share the same 500VAC/450VDC dual rating, so the amp rating is the only choice you make when ordering.
2) Can I use the Mersen A50P fuse on a DC bus, or is it AC only?
Both. The A50P Series carries a dual rating of 500VAC and 450VDC, so it works on AC distribution and on DC links up to 450V, which is why it turns up in drive, rectifier and renewable-energy DC applications as well as motor control centers.
3) How does the A50P mount, and do I need a clip-style fuse holder?
No clips. The A50P uses tin-plated copper blade terminals that bolt down, so it needs a bolted fuse block or bus landing rather than a spring-clip holder. Bolted blades give a low-resistance joint and let you torque the connection during service.
4) Will the A50P handle the available fault current on a large industrial panel?
It carries a 25 kA breaking capacity, so it can safely interrupt fault currents up to that level. Check the available short-circuit current at the point of installation against 25 kA; if your calculated fault duty is higher, you need a device with a larger interrupting rating.
5) Can a Littelfuse CCMR040 Class CC fuse be used in place of a 40A Mersen A50P high-speed fuse?
No. The Mersen Amp-Trap A50P is a high-speed fuse rated 500VAC/450VDC with blade terminals for bolted mounting, and the 40A rating is the A50P40-4. The Littelfuse CCMR040 is a Class CC time-delay fuse at 40A, so it is a ferrule-style Class CC body with a time-delay characteristic rather than a bolted high-speed element. Time-delay is intended to ride through motor inrush; high-speed clearing is what protects semiconductor devices such as drives and rectifiers. The two are not mechanically or electrically interchangeable even at the same amperage.
6) What is the difference between the Mersen A50P and a Littelfuse BLF midget fast-acting fuse?
Both are fast-clearing, but they sit in different parts of a system. The Littelfuse BLF Series is a midget fast-acting fuse rated 250V in a laminated tube body, which suits control circuits and small branch loads that clip into midget fuse holders. The Mersen A50P is rated 500VAC/450VDC with a GMG insulating body and tin-plated copper blade terminals that bolt into place, and it is offered at 30A, 40A and 60A. If the drawing calls for a DC-rated, bolt-in high-speed fuse, the BLF will not cover it; if the panel has midget clips and a 250V control circuit, the A50P will not fit the holder.
7) For a DC bus application, which of these fuses is actually rated for DC?
The Mersen Amp-Trap A50P carries a dual rating of 500VAC/450VDC, so it is the one specified for DC bus and rectifier work as well as AC, and it is available at 30A, 40A and 60A with bolted blade terminals. Among the alternatives, the Littelfuse BLF midget is listed at 250V and the Square D PowerLogic meter fuses at 600V, both in the context of AC circuit and metering duty. If the requirement on the print is a DC voltage rating with high-speed clearing, the A50P is the part that states it.
8) Is the Mersen A50P RoHS compliant for a spec that requires it?
Yes, the Amp-Trap A50P Series is RoHS compliant, which covers most facility and OEM procurement specs calling for restricted-substance conformity.
9) I need a small inline fuse for a control or metering circuit, not a bolted power fuse. Is the A50P right?
Not for that job. The A50P is a bolted blade-terminal power fuse for 500VAC/450VDC circuits. For low-current control and instrument work, look at glass tube fuses like the Littelfuse AGA Series 5A or the AGU Series, the Littelfuse BLF midget fast-acting 250V fuse, or the Square D PowerLogic energy meter fuse pack (set of 3, 0.5A 600V) for metering.
10) Will a Square D PowerLogic energy meter fuse pack work for protecting a drive the way the A50P does?
No. The Square D PowerLogic Energy Meter Fuse Pack is a set of three 0.5A 600V fuses intended for metering circuits, where the fuse protects the voltage-sensing leads of the meter. The Mersen A50P is a high-speed power fuse rated 500VAC/450VDC with tin-plated copper blade terminals, offered at 30A, 40A and 60A for protecting equipment and feeders. A 0.5A metering fuse will not carry a drive or motor load at all, so the two serve entirely separate roles in the same panel.
11) What is the A50P fuse body made of?
The insulating body is GMG, a rigid insulating material, with tin-plated copper blades at each end. That combination gives dielectric strength plus the mechanical stiffness a bolted fuse needs when it is carrying bus loads.
12) Where are Mersen A50P fuses typically used?
Industrial motor control centers, commercial HVAC equipment, power distribution panels, manufacturing machinery, data center power systems and renewable energy installations. Anywhere the load is sensitive enough that a fast clear matters more than inrush tolerance.
13) Is the A50P a RoHS compliant option compared with the other fuses?
Yes. The Mersen Amp-Trap A50P is built to RoHS compliant construction, with a GMG insulating body and tin-plated copper blade terminals, which matters for specifications that require RoHS declarations on electrical components going into new equipment builds. It is offered at 30A, 40A and 60A, so a facility standardizing on one high-speed fuse family across motor control centers and distribution panels can cover several load sizes with the same part family.
How fast can I get the Mersen A50P30-1 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 A50P30-1 come with a warranty?
Absolutely. The Mersen A50P30-1 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 A50P30-1?
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
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