Siemens Industry Q21540CT 1/2-Pole 120/240 VAC 15/40 Amp 10 kA Plug-In Common Trip Quadplex Circuit Breaker
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Manufacturer Siemens
Mfg Catalog # Q21540CT
North Coast Part # 487751


  • One 40 Amp double pole and two 15 Amp single pole circuit breakers
  • Triplex 1/2 in. frame
  • Plug in type
  • Space saving design allows 2 poles to fit in a 1 in. panel space
  • 10K AIC series rating
  • 120/240 VAC
  • UL listed
  • CSA certified
  • HACR rated
  • Designed for residential/commercial applications


  • Design of the product: QT
  • Type of electrical connection: PLUG-IN
  • Standard: UL 489
  • Suitability for operation: Electrical Distribution
  • Product brandname: SIEMENS
  • Height [in]: 3 in
  • Depth [in]: 3 in
  • Width [in]: 2 in


GTiN 00783643194977
Length 3 Inch
Width 2 in
Voltage 120/240 Volt
Type QT
Applications ElectricalDistribution
Depth 3 in
Height 3 Inch
Connection Type Plug-In
Family Brand Name Siemens
TC Connection PLUG-IN
Number of Poles 2-4 Pole
Interrupt Rating 10 AIC
Trip Range Thermal Magnetic
Product UPC 78364319497
Operating Temperature N/A
Frame N/A
Actuator N/A
Trip Type N/A
Load Rating N/A
Enclosure N/A
Sub Brand N/A

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