Square D 9999SB8 - Molded Case Circuit Breaker 100A 600V
Square D 9999SB8 - Molded Case Circuit Breaker 100A 600V

Square D 9999SB8 - Molded Case Circuit Breaker 100A 600V

Square D
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Square D 9999SB8 is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in industrial power distribution systems. It is rated for 600V AC maximum and 100A continuous current, with a 25kAIC at 480V AC interrupting capacity. The unit features a three-pole configuration with a thermal-magnetic trip mechanism, housed in a compact 5.19 lb frame with dimensions of 4.0 x 2.5 x 3.0 inches, constructed from durable thermoplastic and copper alloy contacts. It complies with UL 489 and CSA C22.2 No. 5 standards, ensuring reliable performance in demanding environments. Typical applications include motor control centers, panelboards, and switchboards in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, thermoplastic housing
  • Voltage Rating: 600V AC
  • Current Rating: 100A
  • Dimensions: 4.0 x 2.5 x 3.0 inches
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Toggle
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 5.0 x 3.5 x 4.0 inches
  • Phase: Three-phase
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 25kAIC at 480V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and short-circuit protection
  • Frame Size: 100A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Industrial panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: 1/0 AWG max
  • Metal Type: Copper alloy contacts
  • Panel Style: Standard
  • 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: 2.5 inches
  • Clas: Not applicable
  • Mounting: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 50 HP at 480V
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open type
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 1/0 AWG
  • Certification: UL listed, CSA certified
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Lug type
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: Square D QO and NQ
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 100A
  • Current Rating: 100A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • 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: Not available
  • GTIN: Not available