Mersen A2D-R Class RK1 Time-Delay Fuse 20A 250VAC/250VDC with SmartSpot Indication

Mersen A2D-R Class RK1 Time-Delay Fuse 20A 250VAC/250VDC with SmartSpot Indication

Professional Circuit Protection with Advanced Indication Technology

The Mersen A2D-R Class RK1 Time-Delay Fuse delivers reliable circuit protection for AC and DC applications up to 250V. Featuring SmartSpot indication technology and ferrule terminals with tin-plated copper construction, this 20A fuse provides professional-grade performance with visual status monitoring. The PolyTube body construction and clip mounting method ensure secure installation and dependable operation in demanding electrical environments.

Professional Features & Benefits

• 20A Current Rating: Provides precise overcurrent protection for medium-load circuits and equipment applications.
• Class RK1 Performance: Delivers superior current-limiting characteristics and enhanced safety compared to standard fuse classes.
• Time-Delay Characteristic: Allows temporary overloads while providing fast protection against short circuits and sustained overcurrent conditions.
• SmartSpot Indication: Visual indication system clearly shows fuse status, reducing troubleshooting time and improving maintenance efficiency.
• 200 kA Breaking Capacity: Handles high fault currents safely, providing robust protection in demanding electrical systems.
• AC/DC Compatibility: Versatile design works with both alternating and direct current applications up to 250V.
• Ferrule Terminal Design: Tin-plated copper terminals ensure reliable connections and resist corrosion in various environments.

Technical Specifications

• Ac Max I R Breaking Capacity I1: 200 kA
• Ac Or Dc: AC/DC
• Ampere Rating: 20 A
• Body Insulating Material: PolyTube
• Connection Terminal Material: Tin-Plated Copper
• Connection Terminal Type: Ferrule
• Frequency Hz : 50/60 Hz
• Fuse Class: Class RK1
• Indication System: Yes
• Indication System Type: SmartSpot�
• Mounting Method: Clip
• Product Length: 2 in
• Product Weight: 0.037 lb
• Rated Voltage Ac Ul: 250 V
• Rated Voltage Dc Ul: 250 V
• Rohs Compliant: Yes
• Speed Characteristic: Time Delay

Installation & Operation

1. Mount the fuse in a suitable fuse holder or clip assembly 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 Control Panels and Motor Control Centers
• Commercial HVAC and Lighting Systems
• Power Distribution Equipment and Switchgear
• Electronic Equipment and Instrumentation Protection
• Renewable Energy Systems and Battery Applications
• Process Control and Automation Systems
• Emergency Power and UPS Systems

Why Choose Mersen Quality?

Mersen fuses deliver proven reliability with RoHS compliant construction and advanced SmartSpot indication technology. The robust PolyTube body and tin-plated copper terminals provide long-term durability and consistent performance in professional electrical applications.