ECSR40 - 40Amp Fuse

ECSR40 - 40Amp Fuse

If you’re looking for dependable protection for industrial or commercial electrical systems, the ECSR40 40‑Amp Fuse delivers. This Class RK5, dual‑element, time‑delay fuse is built to safeguard motors, transformers, control panels, and heavy‑duty circuits from both overloads and short circuits — with none of the nuisance tripping that undermines uptime. Its 600 V AC rating and 200 kAIC interrupt capacity make it a solid choice for demanding applications where reliability matters.

Key Features and Benefits

• Time‑Delay Technology: Designed to ride through those brief startup or inrush current spikes without interrupting power. That means your motors, HVAC systems, or control units get the power they need to start without blowing the fuse.
• Dual‑Element Construction: Combines overload and short‑circuit protection in one fuse, giving you an accurate response under varying electrical demands.
• High Interrupting Capacity: With a 200,000‑amp interrupt rating, the fuse can safely clear severe fault currents without damage, keeping wiring and equipment protected even under worst‑case conditions.
• Finger‑Safe Ferrule Ends: Installation and maintenance are safer and easier thanks to ferrule ends that reduce risk during handling.
• Industrial‑Grade Durability: Built to take on repeated thermal and electrical stress typical in manufacturing, motor controls, and commercial power distribution setups.

Technical Specifications

• Catalog Number: ECSR40
• Voltage Rating: 600 Volts AC
• Amperage Rating: 40 Amps
• Interrupt Rating: 200,000 Amps (200 kAIC)
• Response Time: 10 seconds at 500% overload
• Dimensions:
  • Length: 11.63 in
  • Diameter: 2.34 in
• Weight: 2.35 lbs
• End Configuration: Ferrule x Ferrule
• Fuse Indicator: Non-indicating

Material Compliance and Certifications

• CE marked
• UL listed
• CSA certified
• Compliant with UL 248-12 and CSA C22.2 standards
• RoHS compliant — manufactured without hazardous substances

Where It Works Best

• This fuse is a top pick for use in motor control centers, HVAC panels, industrial automation systems, and transformer protection. It excels in environments with frequent motor starts, high inrush currents, or variable loads — such as commercial HVAC systems, factory production lines, pump controls, and large-scale electrical installations. Facility managers and system designers choose the ECSR40 when they need a single fuse that reliably handles short-term overloads and severe fault conditions without compromising safety or uptime.