Cutler Hammer MSH66A - Molded Case Switch 600V 600A (3-Pole)
Cutler Hammer MSH66A - Molded Case Switch 600V 600A (3-Pole)

Cutler Hammer MSH66A - Molded Case Switch 600V 600A (3-Pole)

Cutler Hammer
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Cutler Hammer MSH66A is a molded case switch designed for primary circuit isolation and disconnection in industrial power distribution systems. It is rated for 600V AC and 600A continuous current, providing robust switching capability for high-load applications. The unit features a compact, heavy-duty construction with a weight of 5.19 lb, utilizing a thermal-magnetic trip mechanism for reliable overcurrent protection. This switch complies with UL 489 and NEMA standards, ensuring safe operation in demanding environments. Typical applications include use in panelboards, switchboards, and motor control centers for branch circuit isolation.

Key Features & Specifications
  • Type: Molded case switch, thermal-magnetic trip
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Weight: 5.19 lb
  • Standards: UL 489, NEMA
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers
  • Switch Type: Molded case
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (manual switch)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Not specified
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 600A
  • AIC rating: Not specified
  • Connection: Line and load terminals
  • Poles: 3
  • Protection: Overcurrent
  • Functions: Isolation, switching
  • Frame Size: Not specified
  • Trip Type: Thermal-magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded case switch
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 600A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Molded case
  • Wire Size: Not specified
  • Certification: UL 489
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Line and load
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA
  • Compatible Frames: Not specified
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not specified
  • Current Rating: 600A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 78667824189
  • GTIN: 00786678241890