Cutler Hammer MSH21A - Molded Case Switch 100A 600V
Cutler Hammer MSH21A - Molded Case Switch 100A 600V

Cutler Hammer MSH21A - Molded Case Switch 100A 600V

Cutler Hammer
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Cutler Hammer MSH21A is a molded case switch designed for primary circuit isolation and protection in industrial power distribution systems. It is rated for 600V AC and 250V DC with a continuous current rating of 100A, housed in a compact 11 lb frame with a NEMA-rated enclosure for robust construction. This switch complies with UL 489 and CSA standards, ensuring reliable performance in demanding environments. Typical applications include motor control centers, panelboards, and switchboards requiring manual disconnection.

Key Features & Specifications
  • Type: Molded case switch, non-fusible, manual operation
  • Voltage Rating: 600V AC / 250V DC
  • Current Rating: 100A
  • Dimensions: Standard frame size (11 lb weight)
  • Standards: UL 489, CSA
  • Applications: Industrial motor control, panelboard isolation, switchboard disconnects
  • Switch Type: Non-automatic, manual
  • Configuration: 3-pole
  • Coil Voltage Maximum: N/A (manual switch)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 6 x 4 x 3 inches (approx)
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 10kA at 600V AC
  • Connection: Line and load terminals
  • Poles: 3
  • Protection: Overcurrent (via external fuse)
  • Functions: On/Off isolation
  • Frame Size: MSH21
  • Trip Type: N/A (non-automatic)
  • Panel Type: NEMA 1
  • Breaker Type: Molded case switch
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Steel enclosure
  • Panel Style: Surface mount
  • Bus Type: Copper
  • Fuse Class: N/A (non-fusible)
  • Insulation Temperature: 105°C
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: N/A
  • Horse Power: 50 HP at 600V
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: 100A
  • Dist Voltage: 600V
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 0A
  • Enclosure: NEMA 1
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: Copper
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-wire
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: MSH series
  • Installation Type: Panel
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: MSH21
  • Current Rating: 100A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 78667824165
  • GTIN: 00786678241654