Cutler Hammer MSH73A - Molded Case Switch 100A 600V
Cutler Hammer MSH73A - Molded Case Switch 100A 600V

Cutler Hammer MSH73A - Molded Case Switch 100A 600V

Cutler Hammer
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The Cutler Hammer MSH73A is a molded case switch designed for primary circuit isolation and protection in industrial power distribution systems. This unit is rated for 600V AC and 250V DC with a continuous current rating of 100A, featuring a compact 3-pole configuration housed in a NEMA 1 enclosure. Constructed with a heavy-duty thermoplastic frame and silver alloy contacts, it offers a 65kAIC at 480V AC for robust fault current interruption. The switch complies with UL 489 and CSA C22.2 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 switch, non-fusible, manual operation
  • Voltage Rating: 600V AC / 250V DC
  • Current Rating: 100A continuous
  • Dimensions: 4.13 in H x 2.75 in W x 3.38 in D
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Non-fusible disconnect
  • Configuration: 3-pole, 3-wire
  • Coil Voltage Maximum: Not applicable (manual switch)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 5.5 in x 4.5 in x 4.0 in
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 65kA at 480V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent protection via external device
  • Functions: On/Off isolation
  • Frame Size: 100A frame
  • Trip Type: None (switch only)
  • Panel Type: NEMA 1
  • Breaker Type: Molded case switch
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: #14 AWG to #2 AWG
  • Metal Type: Copper alloy contacts
  • Panel Style: Surface mount
  • Bus Type: Not applicable
  • 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: Not applicable
  • 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: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: N/A
  • Wire: Copper or aluminum
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Toggle handle
  • Wire Size: #14 AWG to #2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Screw lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Cutler Hammer CH series
  • Installation Type: Panel mount
  • 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: 78667824191
  • GTIN: 00786678241913