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Siemens Q21540CTNC - Molded Case Breaker 40A 240V (2-Pole)

Siemens
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Siemens Q21540CTNC is a 2-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in residential and light commercial applications. It is rated for 240V AC, 40A, with a 10kA interrupting capacity at 240V, providing LI (Long-Time and Instantaneous Trip) protection for branch circuits. The unit features a plug-in connection, measures 2.756 x 2.756 x 1.969 inches, weighs 0.75 lb, and is constructed for single-phase systems. This breaker complies with applicable UL and CSA standards, making it suitable for use in Siemens load centers and panelboards. Typical applications include protecting lighting, appliance, and general-purpose circuits in industrial and commercial environments.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Dimensions: 2.756 x 2.756 x 1.969 inch
  • Standards: UL, CSA
  • Applications: Branch circuit protection in residential and light commercial panels
  • Switch Type: Toggle
  • Configuration: 2-Pole
  • Coil Voltage Maximum: N/A
  • Temp Rating: N/A
  • Shipping Dimensions: 2.756 x 2.756 x 1.969 inch
  • Phase: 1
  • Voltage: 240V
  • Amperage: 40A
  • AIC rating: 10kA@240V
  • Connection: Plug-In
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Frame Size: N/A
  • Trip Type: Thermal Magnetic
  • Panel Type: N/A
  • Breaker Type: Molded Case
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: N/A
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: N/A
  • Insulation Temperature: N/A
  • 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: Plug-In
  • Hz: N/A
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: N/A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: Toggle
  • Wire Size: N/A
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: Plug-In
  • Frequency Rating: N/A
  • Phase Connection: Single-Phase
  • Standards: UL, CSA
  • Compatible Frames: N/A
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 40A
  • 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: N/A
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 804766373572
  • GTIN: 00804766373572