|EPFDS-250A-3P-3X250A.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: 250A (Maximum)||IP66|
|Fuse Type: Time Delay Fuse|
|Time Delay: 10 Seconds (Minimum) @ 500% Overload|
|Fuse Qty: (3) 250A 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*|
|The Larson Electronics EPFDS-250A-3P-3X250A.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 250-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-250A-3P-3X250A.600V-TD ensures active protection of electrical systems in combustible facilities. Rated at 600V AC, this fused unit contains three 250-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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