Mersen A70P20-4 High Speed Fuse Amp-Trap® A70P 700VAC 650VDC 20A Bolted Blade
Alternate Item Number: A70P20-4
UPC: 782001948122
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- 20A current rating with 700VAC/650VDC voltage capability
- 100kA interrupting rating (AC/DC) and L/R ≤10ms for fast response
- Bolted blade connection for secure, low-resistance installation
- UL-recognized (File E60314) for AC/DC applications per UL 198L
- Low I²t minimizes component damage during short circuits
Specifications
AC Voltage Rating | 700 V |
Amperage Rating | 20 A |
Application | Protection of 700V or less DC drives, UPS, inverters, reduced voltage starters, etc. |
Brand Name | Mersen |
Case | GMG |
Case Material | GMG |
Connection | Blade |
DC Voltage Rating | 650 V |
Mounting | Bolted |
Mounting | Bolt |
Size | 2.88 x 0.56;73.152 x 14.224 in;mm |
Size | 2.88 x 0.56 in |
Size | 73.152 x 14.224 mm |
Special Features | Low I2t minimizes damage to protected components on short circuit Controlled arc voltage reduces stress to circuit components during fuse clearing Choice of mounting types helps in equipment design |
Standard | UL recognized component UL File E60314 AC: guide no. JFHR2 (10-1000A) DC: tested to UL standard 198L parameters (10-800A) |
Sub Brand | Amp-Trap® |
Type | Round Body High-Speed Fuse-Links AC Protection |
Voltage Rating | 700 V |
Voltage Rating | 700 V V |
Package Dimensions (L x W x H) | 2.88 in x 0.56 in x 0.56 in |
Package Dimensions (L x W x H) | 73.152 mm x 14.224 mm x 14.224 mm |
Package Weight (Imperial) | 0.450 lb |
Package Weight (Metric) | 0.204 kg |

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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.Frequently Asked Questions
What are the voltage and current ratings for A70P fuses?
A70P fuses are rated for 700VAC and 650VDC, with ampere ratings from 10 to 1000A for AC and 10 to 800A for DC.
What is the interrupting rating (I.R.) for A70P fuses?
The interrupting rating for A70P fuses is 100kA I.R. for both AC and DC applications.
What applications are A70P fuses designed for?
A70P fuses are designed for higher voltage AC and DC drives, UPS systems, and reduced voltage motor starters.
What are the key features of A70P high speed fuses?
Key features include low I2t for component protection, controlled arc voltage, and availability in various mounting types.
Are A70P fuses UL recognized?
Yes, A70P fuses are UL recognized components, with specific guide numbers for AC and tested parameters for DC.
What is the LR rating for A70P fuses?
The LR rating for A70P fuses is 10ms.
What types of mounting are available for A70P fuses?
Available mounting types include ferrule, blades (bolt-in), hockey puck (bolt-in), and options for integral blown-fuse indicators or trigger actuators.
What is the purpose of the low I2t in A70P fuses?
The low I2t characteristic minimizes damage to protected components during a short circuit.
Can I get A70P fuses with indicator options?
Yes, A70P fuses offer indicator options, such as integral blown-fuse indicators.
What are the dimensions for A70P fuses rated 450-600A?
For A70P fuses rated 450-600A with mounting type 4, 4TA, or 4TI, the dimensions are 7.09 in length, 2.38 in width, and 2.84 in height.
Frequently Asked Questions about Mersen
What industries and applications are Mersen products used for?
Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.
What are the main product lines offered by Mersen?
Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.
What are the key features of Mersen products?
Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.
What environmental ratings do Mersen products have?
Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.
What accessories are available for Mersen products?
Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.
How are Mersen products typically installed?
Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.
What certifications and standards do Mersen products comply with?
Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.
What technical support does Mersen offer?
Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.










