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Siemens S74B - 600A 3-Pole Molded Case Circuit Breaker

Siemens
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Siemens S74B Circuit Breaker is a high-capacity industrial circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. This unit is rated for 600V AC and carries a current rating of 600A, ensuring robust protection for heavy-duty loads. The breaker features a compact frame construction with a weight of 60.12 lb, designed for panelboard or switchboard mounting with a thermal-magnetic trip mechanism. It complies with UL 489 and CSA standards, ensuring reliable performance in demanding environments. Typical applications include industrial power distribution, manufacturing facilities, and commercial building main service panels.

Key Features & Specifications
  • Type: Industrial molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Dimensions: Standard frame size for panelboard mounting
  • Standards: UL 489, CSA
  • Applications: Industrial power distribution, manufacturing, commercial main panels
  • Switch Type: Thermal-magnetic
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard industrial packaging
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 600A
  • AIC rating: 65kA at 480V
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Circuit isolation and protection
  • Frame Size: S7
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard or switchboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Up to 500 MCM
  • Metal Type: Copper and steel
  • Panel Style: Industrial
  • Bus Type: Copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Bolt-on
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 600 HP at 480V
  • Aux Contacts: Optional
  • CPT: Not included
  • Full Load Amps: 600A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 600A
  • Full Load Amp Minimum: 600A
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 600A
  • Amperage Minimum: 600A
  • Nema Rating: NEMA 1
  • Switch Style: Toggle
  • Wire Size: #6 AWG to 500 MCM
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: S7
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: S7
  • Current Rating: 600A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 078364302119
  • GTIN: 00783643021198