300A Explosion Proof Fused Disconnect - 600V Rated - Time Delay Fuse (3) 300A Fuses (3) NPT Hubs


Sale price$32,673.99


Specifications / Additional Information
EPFDS-300A-3P-3X300A.600V-TD Explosion Proof Disconnect Switch Features/Ratings
Unit Type: Explosion Proof Disconnect Switch (Fused) Class I, Division 1&2 Groups C,D
Dimensions: - Class I, Zones 1&2 Groups llB,llA
Weight: 425 lbs Class II, Division 1&2 Groups E,F,G
Rated Voltage: 600V AC (Maximum) Class III
Configuration: 3-Pole NEMA 3,4,4X,7 (C,D), 9 (E,F,G)
Amps: 300A (Maximum) IP66
Fuses: Included  
Fuse Type: Time Delay Fuse  
Time Delay: 10 Seconds (Minimum) @ 500% Overload  
Fuse Qty: (3) 300A 3P [600V]
Materials: Cast Aluminum
Hardware Materials: Stainless Steel
Mounting: Surface Mount Toll Free: 1-800-369-6671
Hub Qty: 3 Intl: 1-214-616-6180
Hub Sizes/Locations: (2) 3" NPT @ Top, (1) 0.5" NPT @ Bottom
Conduit: Operator Provided
*All grounding shall comply with state and local codes and meet the minimum requirements of the National Electronic Code section 250*
' Product Overview '
The Larson Electronics EPFDS-300A-3P-3X300A.600V-TD Explosion Proof Fused Disconnect is designed for use in Class I, II and III environments. Equipped with time-delay fuses, this 3-pole unit contains three 300-amp 600V fuses and three NPT hubs. The explosion proof disconnect offers delayed response to transient surges, making it ideal for addressing pulse currents and temporary overloads associated with motors, HVAC systems and HID lights in flammable work sites. *PLEASE NOTE: ANY FREE SHIPPING OFFERS DO NOT APPLY TO EXPLOSION PROOF ENCLOSURES* The EPFDS-300A-3P-3X300A.600V-TD ensures active protection of electrical systems in combustible facilities. Rated at 600V AC, this fused unit contains three 300-amp 3-pole 600V time-delay fuses. The fuses feature 10-second time delay at 500% overload. These explosion proof disconnects are not sensitive to electrical pulses, allowing connected systems to utilize more power without activating the fuse. Time-delay fuses (also known as a short-blow fuse or a slow-blow fuse) can withstand electrical surges for a specific period of time, typically 10-15 seconds. This feature is useful for equipment that relies on high voltage current during startup, such as motors. Choosing between a time-delay fuse and a fast-acting fuse highly depends on the type of system or device requiring protection, as both protective methods are effective (one is not superior over the other). The explosion proof disconnect switch/breaker is constructed of cast aluminum and stainless steel cover bolts. The external on/off lever can be locked into the "on" or "off" position with room for up to three padlocks for superior security. A gasketed flange with O-ring (in the side bolt circle) is available for protection from the ingress of moisture. Hubs: For completing electrical connections, three NPT hubs are provided on the enclosure. Two 3" NPT hubs are located at the top of the unit; and one 0.5" NPT hub can be found at the bottom of the disconnect, with a wire size compatibility of #2-600MCM. Mounting: Operators can mount the explosion proof disconnect on flat surfaces. Applications: Motors, VFDs, phase converters, HVAC systems, dryers, fluorescent lights, HID lights, metal halide, high pressure sodium, mercury vapor, petroleum refineries, chemical and petrochemical plants, storage areas, and other processing facilities where hazardous substances are handled or stored.

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