Mersen Class J Time-Delay Fuse 40A 600VAC/400VDC with SmartSpot Indication System

Mersen Class J Time-Delay Fuse 40A 600VAC/400VDC with SmartSpot Indication System

Professional electrical protection with visual indication technology

The Mersen Class J Time-Delay Fuse delivers reliable overcurrent protection for electrical systems operating at 600VAC or 400VDC with 40A capacity. Featuring SmartSpot indication system for visual fuse status monitoring, this professional-grade fuse incorporates ferrule terminals with tin-plated copper construction and GMG body insulating material for dependable performance in demanding applications.

Professional Features & Benefits

• 40A Current Rating: Provides precise overcurrent protection for medium-duty electrical circuits and equipment loads.
• Class J Design: Delivers current-limiting protection with rejection feature to prevent installation of non-current-limiting fuses.
• Time-Delay Characteristic: Allows temporary overloads while providing fast clearing of short-circuit faults for motor and transformer applications.
• SmartSpot Indication System: Offers visual indication of fuse status for quick maintenance assessment and reduced downtime.
• 200kA Breaking Capacity: Handles high fault currents safely with reliable interruption performance in industrial applications.
• Dual Voltage Rating: Supports both 600VAC and 400VDC applications for versatile installation flexibility.
• Ferrule Terminal Design: Ensures secure electrical connections with tin-plated copper terminals for corrosion resistance.

Technical Specifications

• Ac Max I R Breaking Capacity I1: 200 kA
• Ac Or Dc: AC/DC
• Ampere Rating: 40 A
• Body Insulating Material: GMG
• Connection Terminal Material: Tin-Plated Copper
• Connection Terminal Type: Ferrule
• Frequency Hz : 50/60 Hz
• Fuse Class: Class J
• Indication System: Yes
• Indication System Type: SmartSpot�
• Mounting Method: Clip
• Product Length: 2.38 in
• Product Weight: 0.167 lb
• Rated Voltage Ac Ul: 600 V
• Rated Voltage Dc Ul: 400 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

• Industrial Motor Control Centers
• Commercial Electrical Panels
• Manufacturing Equipment Protection
• HVAC System Controls
• Process Control Applications
• Transformer Primary Protection
• Emergency Power Systems

Why Choose Mersen Quality?

Mersen fuses deliver proven reliability with RoHS compliant construction and professional-grade materials including GMG insulating body and tin-plated copper terminals. The SmartSpot indication system provides enhanced maintenance visibility while the 200kA breaking capacity ensures dependable fault protection in demanding electrical environments.