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Siemens 49EC17FW362408R - 400A 3-Pole MCCB 600V AC

Siemens
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The Siemens 49EC17FW362408R is a heavy-duty industrial circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. It is rated for 600V AC and 400A continuous current, housed in a robust molded case with a compact 5.19 lb frame for panelboard installation. The breaker features a thermal-magnetic trip mechanism, three-pole configuration, and a 65kAIC at 480V AC interrupting capacity, complying with UL 489 and NEMA AB-1 standards. This unit is suited for commercial and industrial applications requiring reliable branch circuit protection, such as manufacturing plants, data centers, and infrastructure facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, thermal-magnetic trip, three-pole
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: Standard 3-pole frame size
  • Standards: UL 489, NEMA AB-1, CSA C22.2 No. 5
  • Applications: Industrial panelboards, switchboards, motor control centers
  • Switch Type: Thermal-magnetic
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard industrial packaging
  • Phase: Three-phase
  • Voltage: 600V AC
  • Amperage: 400A
  • AIC rating: 65kA at 480V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Circuit isolation and protection
  • Frame Size: Standard 400A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Up to 500 MCM
  • Metal Type: Copper alloy contacts
  • Panel Style: Industrial
  • Bus Type: Copper
  • 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: Panelboard bolt-on
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 400A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 400A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open (no enclosure)
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 400A
  • Amperage Minimum: 0A
  • Nema Rating: NEMA AB-1
  • Switch Style: Thermal-magnetic
  • Wire Size: #6 AWG to 500 MCM
  • Certification: UL 489, CSA
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Line and load lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL 489, NEMA AB-1, CSA C22.2 No. 5
  • Compatible Frames: Siemens panelboards
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 400A frame
  • Current Rating: 400A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • 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: 78308778959
  • GTIN: 00783087789593