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Crouse-Hinds STTTB5 - Safety Switch 600V 30A (NEMA 4X)

Crouse-Hinds
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The Crouse-Hinds STTTB5 is a heavy-duty, enclosed safety switch designed for reliable circuit disconnection and equipment protection in industrial environments. It is rated for 600V AC and carries a current rating of 30A, providing robust performance for motor and power distribution applications. The switch features a NEMA 4X stainless steel enclosure for corrosion resistance, with dimensions of approximately 8.5 inches in height, 4.5 inches in width, and 3.5 inches in depth, and weighs 1.24 lb. It complies with UL 98 and CSA C22.2 standards, ensuring adherence to North American safety requirements. Typical applications include use in chemical plants, refineries, and other harsh industrial settings where a durable, non-corrosive disconnect is necessary.

Key Features & Specifications
  • Type: Heavy-duty enclosed safety switch, stainless steel construction, manual operation
  • Voltage Rating: 600V AC
  • Current Rating: 30A
  • Dimensions: 8.5" H x 4.5" W x 3.5" D
  • Standards: UL 98, CSA C22.2
  • Applications: Chemical plants, refineries, industrial power distribution
  • Switch Type: Heavy-duty safety switch
  • Configuration: 2-pole, 3-wire
  • Coil Voltage Maximum: Not applicable (manual switch)
  • Temp Rating: -20°C to 40°C
  • Shipping Dimensions: 9" x 5" x 4"
  • Phase: Single-phase
  • Voltage: 600V AC
  • Amperage: 30A
  • AIC rating: 10kA at 600V AC
  • Connection: Screw terminals
  • Poles: 2
  • Protection: Overcurrent protection via fuse
  • Functions: Disconnect, isolation
  • Frame Size: 30A
  • Trip Type: Not applicable (fuse-based)
  • Panel Type: NEMA 4X
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Stainless steel
  • Panel Style: Enclosed
  • Bus Type: Copper
  • Fuse Class: Class H or K
  • Insulation Temperature: 105°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Surface mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 7.5 HP at 600V
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: 30A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 30A
  • Full Load Amp Minimum: 0A
  • Enclosure: NEMA 4X stainless steel
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper
  • Amperage Maximum: 30A
  • Amperage Minimum: 0A
  • Nema Rating: 4X
  • Switch Style: Heavy-duty
  • Wire Size: 14 AWG to 4 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 98, CSA C22.2
  • Compatible Frames: Not applicable
  • Installation Type: Surface
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 30A
  • 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: 78473110226
  • GTIN: 00784731102263