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Siemens THHQB1125ST1 - Circuit Breaker 25A 1-Pole (Bolt-On)

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Siemens THHQB1125ST1 is a 1-pole bolt-on circuit breaker designed for overload and short-circuit protection in residential and commercial load centers. It is rated for 120/240 VAC at 25 amps with a 10 kAIC interrupting capacity, featuring a thermal-magnetic trip mechanism for reliable performance. The breaker weighs 5.19 lb and is constructed with a compact frame for easy installation in Siemens panelboards. It complies with UL 489 and CSA standards, ensuring safety and code compliance. This breaker is commonly used in lighting, appliance, and general-purpose branch circuit applications.

Key Features & Specifications
  • Type: 1-pole bolt-on circuit breaker, thermal-magnetic trip
  • Voltage Rating: 120/240 VAC
  • Current Rating: 25 A
  • Dimensions: Compact frame size
  • Standards: UL 489, CSA
  • Applications: Lighting, appliance, general-purpose branch circuits
  • Weight: 5.19 lb
  • Breaker Type: THQB
  • Poles: 1
  • Connection: Bolt-on
  • AIC Rating: 10 kAIC
  • Phase: 1
  • Amperage: 25 A
  • Voltage: 120/240 VAC
  • Frame Size: Compact
  • Trip Type: Thermal-magnetic
  • Panel Type: Siemens load centers
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single
  • Installation Type: Panelboard
  • Item QTY: 1
  • Breaker Frame: THQB
  • Current Rating: 25 A


Product Identification
  • UPC: Not available
  • GTIN: Not available