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Square D SDSA4040D - Type 1 SPD 40kA (480VAC 3-Phase)

Square D
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Square D SDSA4040D is a Type 1 Surge Protective Device (SPD) designed to protect critical electrical equipment from transient overvoltages in 480V delta, 3-phase, 3-wire systems. It is rated for 40kA surge current per phase with a 200kA short circuit current rating (SCCR) and operates at 480VAC with a 10kA current rating across 3 poles. The device measures 3.07 in (78 mm) x 3.6 in (92 mm) x 2.6 in (67 mm) and weighs 0.94 lb, featuring a compact panel-mount design with a NEMA 4X enclosure and LED indicators for operational status. It complies with UL 1449:ed. 4 and CSA C22.2 No 8:1986 standards, holding UL and CSA certifications, and is compatible with QO frames. This SPD is suited for demanding industrial and commercial applications requiring robust surge protection for power panels or sensitive equipment.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Type: Surgelogic
  • Series: SDSA
  • Surge Current per Phase: 40kA
  • System Voltage: 480V AC Delta
  • Configuration: 3-phase, 3-wire
  • Mounting Type: Panel mount
  • Short Circuit Current Rating (SCCR): 200kA
  • Enclosure: NEMA 4X
  • Protection Modes: 3
  • Operating Temperature: 65°C
  • LED Indicators: Yes
  • Type: Type 1 SPD
  • Dimensions: 3.07 in (78 mm) x 3.6 in (92 mm) x 2.6 in (67 mm) (Height x Width x Depth)
  • Weight: 0.94 lb
  • Voltage Rating: 480VAC
  • Poles: 3
  • Standards: UL 1449:ed. 4, CSA C22.2 No 8:1986
  • Wire Size: AWG 12, Copper
  • Certification: UL, CSA
  • Compatible Frames: QO
  • Phase: 3
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Current Rating: 10kA
  • Country of Origin: Mexico