• Product Series: Allen-Bradley® 1494G Industrial Safety Disconnect Switches
• Model Description: This model is a non-fusible disconnect switch housed in a standard-sized enclosure, featuring specific auxiliary contact options.
Electrical Parameters
Rated Current: 600 A
Rated Voltage:
◦ 600V AC
◦ 250V DC
Number of Poles: 3-pole, 3-phase
Horsepower (HP) Ratings (based on UL/CSA/NEMA standards, 60 Hz):
◦ 230V AC: 200 HP
◦ 460V AC: 400 HP
◦ 575V AC: 500 HP
◦ 250V DC: 50 HP
IEC Application Ratings (Maximum kW, AC23 Category):
◦ 220V/50 Hz: 150 kW
◦ 440V/50 Hz: 295 kW
◦ 550V/50 Hz: 375 kW
Mechanical and Structural Characteristics
Enclosure Type: Type 3R/4/12 (weatherproof, splash-proof, dustproof painted metal enclosure)
Operating Handle: Standard non-metallic handle. Optional painted metal handle (option code -412) or stainless steel handle (option code -413), but as per code "-989" no handle change is specified, so it should be the standard non-metallic handle.
Visible Blade Construction: Present (√), providing visual indication of safe on/off status.
Interlock Mechanism: Complies with NFPA 79 standards, with the handle always interlocked with the switch.
Mechanical Life: Typically 5,000 operations.
Operating Frequency: Maximum 3 operations per minute.
Certifications and Standards
• Safety Certifications: cULus Listed (File No. E227497; Guide No. WIAX)
• Compliance Standards:
◦ CSA C22.2 No. 4
◦ UL 98
◦ UL 508
• Environmental Certification: RoHS Compliant
Physical Characteristics
• Mounting Method: Flange-mounted handle
• Enclosure Material: Glass fiber reinforced thermosetting plastic
• Terminal Material: Tin-plated copper
Environmental Specifications
• Operating Ambient Temperature:
◦ Open Environment: -20°C to +60°C (-4°F to +140°F)
◦ Enclosed Environment: -20°C to +40°C (-4°F to +104°F)
• Storage Temperature: -40°C to +65°C (-40°F to +149°F)
• Altitude: 2000 meters (6562 feet)
• Relative Humidity: 90% at +20°C (+68°F), 50% at +40°C (+104°F)
The 1494G-GF3N-989 is a 600A, 600V AC/250V DC, 3-pole industrial non-fusible safety disconnect switch, equipped with one normally open and one normally closed auxiliary contact. It is suitable for harsh industrial environments and holds comprehensive international certifications.