Cutler Hammer MSH45A - Molded Case Switch 45A 600V
Cutler Hammer MSH45A - Molded Case Switch 45A 600V

Cutler Hammer MSH45A - Molded Case Switch 45A 600V

Cutler Hammer
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Cutler Hammer MSH45A is a molded case switch designed for primary circuit isolation and protection in industrial power distribution systems. This switch is rated for 600V AC and 250V DC, with a continuous current rating of 45A, and features a compact frame size with a robust thermoplastic enclosure for durability in harsh environments. It complies with UL 489 and CSA standards, ensuring reliable performance in short-circuit and overload conditions. Typical applications include motor control centers, panelboards, and switchboards requiring manual disconnect and branch circuit protection.

Key Features & Specifications
  • Type: Molded case switch, non-fusible, manual operation
  • Voltage Rating: 600V AC / 250V DC
  • Current Rating: 45A
  • Dimensions: 3.5 in H x 2.0 in W x 3.0 in D
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Non-fusible disconnect
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (manual switch)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 4.0 in H x 3.0 in W x 4.0 in D
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 45A
  • AIC rating: 10 kA at 600V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Manual disconnect and isolation
  • Frame Size: 45A frame
  • Trip Type: Thermal-magnetic (if equipped)
  • Panel Type: Non-metallic
  • Breaker Type: Molded case switch
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: #14 to #4 AWG
  • Metal Type: Copper alloy contacts
  • Panel Style: Flush mount
  • Bus Type: Not applicable
  • Fuse Class: Not applicable (non-fusible)
  • 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: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 30 HP at 600V AC
  • Aux Contacts: 1 NO/NC optional
  • CPT: Not included
  • Full Load Amps: 45A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 45A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open type
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: #14 to #4 AWG copper
  • Amperage Maximum: 45A
  • Amperage Minimum: 0A
  • Nema Rating: 1 (indoor)
  • Switch Style: Toggle handle
  • Wire Size: #14 to #4 AWG
  • Certification: UL listed, CSA certified
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Screw lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: Cutler Hammer CH series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 45A
  • Current Rating: 45A
  • 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: 78667824181
  • GTIN: 00786678241814