MARS 82138 600V 30A Fuse

The MARS 82138 is a professional-grade 30A 600V TRS cartridge fuse designed for high-demand HVACR and industrial applications. This UL Class RK5 fuse features a dual-element, time-delay construction that allows for temporary surge currents without nuisance tripping, making it ideal for protecting HVAC compressor motors and inductive loads. Built with a high-grade fiberglass body for thermal stability and silica filler for superior arc quenching, the 82138 ensures high current limitation and a 200kA interrupting rating. This 600V current-limiting fuse is a direct replacement for standard TRS, FLSR, and IDSR series, providing essential branch circuit protection for heating, lighting, and cooling systems where precision overcurrent safety is non-negotiable.

• SmartSpot technology: Features a visual blown fuse indicator for rapid troubleshooting in dark or cramped mechanical rooms.
• High Interrupting Rating: Rated for 200,000 Amps RMS, providing robust protection against catastrophic short circuits.
• Time-Delay Performance: Specifically engineered to handle the high inrush currents of HVAC condenser motors without failing prematurely.
• Class RK5 Protection: Ensures current-limiting performance to minimize peak let-thru current and protect sensitive downstream components.
• Industrial Durability: The moisture-resistant fiberglass body provides dimensional stability in harsh, high-temperature service environments.

Can I use this fuse for 240V or 480V HVAC equipment?
Yes. While rated for 600VAC, the MARS 82138 is fully compatible with any system operating at 600V or less, including standard 208V, 240V, and 480V commercial circuits.

What is the difference between this and a fast-acting fuse?
As a time-delay fuse, this unit stays intact during brief startup surges typical of motors and transformers. A fast-acting fuse would likely blow immediately upon motor engagement, leading to unnecessary service calls.

Are these fuses interchangeable with other RK5 brands?
Yes, the MARS 82138 is a standard 5-inch by 13/16-inch cartridge that fits all standard 30A 600V Class R fuse blocks and can replace Bussmann FRSR-30 or Littelfuse FLSR030 models.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.