Mersen A2D-R Class RK1 Time-Delay Fuse 40A 250VAC/250VDC with SmartSpot Indication

Mersen A2D-R Class RK1 Time-Delay Fuse 40A 250VAC/250VDC with SmartSpot Indication

Professional Time-Delay Protection with Visual Indication Technology

The Mersen A2D-R Class RK1 time-delay fuse delivers reliable overcurrent protection for 40A circuits operating at 250VAC or 250VDC. Featuring advanced SmartSpot indication technology and ferrule terminals with tin-plated copper construction, this Amp-Trap 2000 series fuse provides professional-grade protection with clear visual status indication for critical electrical applications.

Professional Features & Benefits

• 40A Current Rating: Provides precise overcurrent protection for medium-duty electrical circuits and equipment.
• Class RK1 Time-Delay: Offers superior coordination with downstream protective devices while allowing temporary overloads during motor starting.
• 250VAC/250VDC Dual Rating: Versatile voltage compatibility for both AC and DC applications in commercial and industrial settings.
• SmartSpot Indication System: Visual indication technology clearly shows fuse status, reducing troubleshooting time and improving maintenance efficiency.
• 200kA Breaking Capacity: High interrupting rating ensures reliable protection even under severe fault conditions.
• Ferrule Terminal Design: Tin-plated copper terminals provide secure connections and excellent conductivity for reliable performance.
• PolyTube Body Construction: Durable insulating material ensures long-term reliability and safety in demanding environments.

Technical Specifications

• Ac Max I R Breaking Capacity I1: 200 kA
• Ac Or Dc: AC/DC
• Ampere Rating: 40 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: 3 in
• Product Weight: 0.119 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 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

• Motor Control Centers and Industrial Equipment Protection
• Commercial HVAC Systems and Building Services
• Power Distribution Panels and Switchgear
• Manufacturing Equipment and Process Control
• Emergency Power Systems and UPS Applications
• Lighting Control and Electrical Distribution
• Data Center and Telecommunications Infrastructure

Why Choose Mersen Quality?

Mersen A2D-R fuses combine advanced SmartSpot indication technology with robust Class RK1 time-delay characteristics and high 200kA breaking capacity. The RoHS compliant design with PolyTube insulation and tin-plated copper terminals ensures reliable performance and environmental responsibility for professional electrical protection applications.