Mersen A70P Amp-Trap High Spee...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$426.69
Mersen A70P Amp-Trap High Speed Fuse, 700VAC/650VDC Bolted Blade Terminal

Mersen A70P Amp-Trap High Speed Fuse, 700VAC/650VDC Bolted Blade Terminal

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Model: A70P150-4

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

$426.69
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Mersen A70P200-4 Amp-Trap High-Speed Fuse, 200A 700VAC/650VDC Bolted Blade Terminal

The Mersen A70P200-4 Amp-Trap High-Speed Fuse delivers reliable 200A circuit protection with dual voltage ratings of 700VAC and 650VDC, making it suitable for both AC and DC power distribution systems. Featuring bolted blade terminals constructed of tin-plated brass and a GMG body insulating material, this high-speed fuse is engineered for fast fault clearing, a 50 kA breaking capacity, and consistent performance in demanding industrial and commercial electrical applications where equipment protection is critical.

Key Features

  • 200A Current Rating: Handles substantial electrical loads while providing precise overcurrent protection for critical circuits and equipment.
  • Dual Voltage Capability: 700VAC and 650VDC ratings offer versatility for both AC and DC applications in industrial and commercial settings, including motor control and process equipment.
  • High Speed Characteristic: Fast fault clearing minimizes equipment damage and reduces arc energy exposure during fault conditions, protecting downstream components.
  • 50 kA Breaking Capacity: Exceptional interrupting capability safely clears high fault currents in demanding electrical systems without compromising circuit integrity.
  • Bolted Blade Terminals: Secure tin-plated brass connections ensure reliable contact and simplified installation in compatible bolted-type fuse holders.
  • GMG Insulating Material: Professional-grade body construction provides excellent electrical insulation and mechanical durability for repeated service cycles.
  • Frequency Rating: Rated for 50/60 Hz operation, supporting standard AC and DC circuit configurations worldwide.
  • Compact Footprint: A 5.09-inch product length and 0.6 lb weight allow installation in space-constrained fuse holders and panelboards.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Body Insulating Material: GMG
  • Rohs Compliant: Yes

Typical Applications

  • Industrial Motor Control Centers
  • Commercial Power Distribution Systems
  • Manufacturing Equipment Protection
  • Data Center Power Infrastructure
  • Healthcare Facility Electrical Systems
  • Educational Institution Power Distribution
  • Critical Process Equipment Protection

Why Mersen?

Mersen high-speed fuses deliver proven reliability with RoHS compliant construction and professional-grade GMG insulating materials that stand up to demanding electrical environments. The robust tin-plated brass blade terminals and compact 5.09-inch, 0.6 lb design ensure dependable, code-compliant performance in installations where fast fault clearing, a 50 kA breaking capacity, and consistent AC/DC operation are essential. For engineers and electricians specifying circuit protection for motor control centers, data centers, and manufacturing equipment, the Amp-Trap A70P200-4 offers a dependable, industry-recognized solution.

Manufacturer Resources

Mersen Product Catalog

Product Specs

Product Group:
Wiring Devices
Product Finish:
Tin-Plated Brass
Product Type:
Fuse
Product Material:
GMG
Voltage Rating:
700VAC/650VDC
Department:
Electrical
Connection Type:
Blade

Mersen A70P150-4 – Frequently Asked Questions

1) What amp ratings does the Mersen A70P Amp-Trap high speed fuse come in?
The A70P Amp-Trap is offered in two ratings: 150A as part number A70P150-4, and 200A as part number A70P200-4. Both share the same 700VAC/650VDC rating and the same bolted blade terminal style, so the only thing you pick is the amperage.
2) Can I use the Mersen A70P fuse on a DC bus, or is it AC only?
Both. The A70P carries a dual rating of 700VAC and 650VDC, so it can be applied on AC distribution up to 700V or on DC circuits up to 650V, with 50/60 Hz operation on the AC side. That dual rating is why it shows up in drive and motor control work where a rectified DC link sits behind an AC supply.
3) Will a bolted blade fuse like the Mersen A70P fit my clip-style fuse holder?
No. The A70P uses bolted blade terminals, which mount with bolts through the blade into a bolted-type fuse block or busbar. It will not drop into a spring clip holder built for ferrule or midget fuses. If your holder is clip style, you want a cylindrical fuse such as the Littelfuse BLF Series midget fast-acting fuse or a Class CC like the Littelfuse CCMR, not a bolted blade high speed fuse.
4) What is the interrupting rating on the Mersen A70P200-4, and is it enough for a high fault-current panel?
The A70P200-4 is rated for a 50 kA breaking capacity, so it can clear fault currents up to that level in a 700VAC or 650VDC system. For a switchboard or motor control center with available fault current inside 50 kA, it is within rating; above that you need to look at a higher interrupting device.
5) Can a Littelfuse CCMR Class CC time-delay fuse be used in place of a Mersen A70P high speed fuse?
No. The Mersen A70P Amp-Trap is a high speed fuse rated 700VAC/650VDC with bolted blade terminals for fast fault clearing ahead of semiconductor and power conversion equipment. The Littelfuse CCMR040 is a Class CC time-delay fuse rated 40A, built to ride through motor inrush rather than clear a fault quickly, and it mounts in a Class CC rejection clip holder, not a bolted blade base. The two are different mounting styles and opposite time-current behavior, so they are not interchangeable.
6) Why would I specify a high speed fuse instead of a standard time-delay fuse?
High speed fuses like the A70P are built to clear a fault fast enough to protect semiconductors, rectifiers, and drive components that fail in milliseconds. A time-delay fuse, such as the Littelfuse CCMR Class CC, does the opposite on purpose, it rides through motor inrush without opening. Use time-delay ahead of a motor starter; use the A70P ahead of power electronics where fast clearing limits let-through energy.
7) What should I use for a low-amperage control or instrument circuit instead of the Mersen A70P?
The A70P is a 150A or 200A bolted blade high speed fuse for power circuits, far too large for control or metering duty. For a low-amperage circuit, the Littelfuse BLF series is a midget fast-acting fuse rated 250V in a laminated tube, and the Square D PowerLogic energy meter fuse pack supplies 0.5A 600V fuses in a set of three for metering inputs. Both use clip-style holders rather than the bolted blade mounting the A70P requires.
8) Is a Littelfuse AGU or AGA glass tube fuse a fast-acting equivalent to the Mersen A70P?
No. The Littelfuse AGU is an AG-series glass tube fuse and the AGA5 is a 5A AGA-series glass fuse, both small ferrule-style cartridges for low-voltage accessory and automotive-type circuits. The Mersen A70P Amp-Trap is a 700VAC/650VDC high speed fuse with tin-plated brass bolted blade terminals and a GMG body, intended for industrial power distribution and motor control. A glass tube fuse will not physically fit a bolted blade base and does not carry the A70P voltage rating.
9) What are the A70P fuse terminals and body made of?
Terminals are tin-plated brass, which gives a stable low-resistance bolted joint against copper bus. The body is GMG insulating material, chosen for dielectric strength and mechanical durability under repeated thermal cycling.
10) Is the Mersen Amp-Trap A70P RoHS compliant for a facility spec?
Yes, the A70P Amp-Trap is RoHS compliant. That is the compliance item stated for this fuse, and it is usually what a hospital, campus, or government procurement spec is asking about on a fuse submittal.
How fast can I get the Mersen A70P150-4 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 A70P150-4 come with a warranty?
Absolutely. The Mersen A70P150-4 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 A70P150-4?
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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