• Bulletin Number: 1494G (Heavy-Duty Industrial Safety Disconnect Switch)
• Switch Rating: G (600 A)
• Enclosure Type: C (Type 4/4X, 304 Stainless Steel Enclosure)
• Poles: 3 (3-pole, 3-phase)
• Fusing: N (Non-fusible)
Additional Option Descriptions
• -98: (1) Normally Open (NO) auxiliary contact, rated at 10A
• -203W: With observation window
Detailed Specifications
Electrical Ratings:
◦ Rated Insulation Voltage (Ui): (600)660 V
◦ Continuous Current Rating: 600 A (600V AC / 250V DC)
◦ Horsepower (HP) Ratings (60 Hz):
▪ 460V AC: 400 HP
▪ 575V AC: 500 HP
◦ IEC Applications (AC23):
▪ 440V/50 Hz: 295 kW
▪ 550V/50 Hz: 375 kW
Auxiliary Contacts (-98):
◦ Type: 1 Normally Open (NO)
◦ Ratings (NEMA/EEMAC): A600, 0600
◦ Ratings (IEC): AC 15, DC 13 to IEC/EN 60947-5-1 and UL 508, 17V, 5mA minimum
Observation Window (-203W):
◦ Provides visual indication of switch blade status.
Mechanical Characteristics:
◦ Mechanical Life (Typical): 5,000 operations
◦ Switching Frequency: Maximum 3 times per hour
◦ Handle Type: Stainless Steel (Type 4/4X)
Environmental Specifications:
◦ Operating Temperature: -35°C to +40°C (-31°F to +104°F)
◦ Storage Temperature: -40°C to +65°C (-40°F to +149°F)
◦ Altitude: 2000 meters (6562 feet) (Conforms to IEC 947-1)
◦ Relative Humidity: 90% at +20°C (+68°F) and 50% at +40°C (+104°F) (Conforms to IEC 947-3)
Design and Testing:
◦ Dielectric Strength: 2200V for 1 minute
◦ Short-Circuit Withstand Capacity:
▪ Non-fusible: 10,000 A
▪ With Class H Fuses: 10,000 A
▪ With Class J or Class R Fuses: 200,000 A
Construction:
◦ Switch Body Material: Glass Fiber Filled Thermosetting Plastic
◦ Contact Material: Copper, Tin-Plated
◦ Enclosure: Type 4/4X, 304 Stainless Steel
Summary
This model is a 600A, 3-pole, non-fusible heavy-duty industrial safety disconnect switch housed in a 304 stainless steel (Type 4/4X) enclosure. It is equipped with a normally open auxiliary contact for status indication and an observation window for viewing the switch blade position. Its design complies with various certifications and standards, including UL, CSA, and CE.