PHSD240V Whole House Surge Protector (120/240V Split-Phase, 520kA, ETL Listed)

PHSD240V Whole House Surge Protector for 120/240V Split-Phase Systems

Protect your home’s electrical system and connected equipment with the PHSD240V whole house surge protector from Bad Wolf. Designed for 120/240V split-phase electrical systems, the PHSD240V helps defend against damaging surges caused by lightning, utility switching, grid disturbances, and other transient overvoltage events. Bad Wolf’s current site snippets also position the PHSD240V for protection related to EMP and solar flare surges, alongside home, generator, and PV-system applications.

Built for demanding residential and light commercial applications, the PHSD240V provides 520kA surge current capacity, giving it substantially higher surge handling capability than standard residential panel SPDs. It is designed to help protect electrical panels, HVAC systems, appliances, smart home electronics, garage equipment, generators, PV-related equipment, and other sensitive electrical loads from damaging voltage spikes. The current product-page snippet lists PHSD240V as a Type 1 SPD with 120/240V electrical ratings, while a surfaced instruction-PDF snippet refers to it as Type 2, so you should make sure the final website wording matches the product label and listing documents before publishing.

The PHSD240V is also positioned as an EM-rated surge protective device for customers seeking added defense against electrical disturbances associated with EMP, CME, and solar flare-related events. Electromagnetic and geomagnetic events can induce damaging voltages and currents onto conductors and power lines, making service-entrance surge protection an important part of a broader electrical resilience strategy. Your site already markets this product family around that use case.

Its rugged NEMA 4X / IP67 enclosure supports indoor or outdoor installation, and the hardwired design provides whole house surge protection at the electrical panel where incoming surge energy can be addressed before it reaches connected equipment.

Electrical Specifications

• System Voltage: 120/240V AC Split-Phase

• Frequency: 50/60 Hz

• Surge Current Capacity: 520kA

• Short Circuit Current Rating (SCCR): 100kA

• Modes of Protection: 6

  • L1-L2

  • L1-N

  • L2-N

  • L1-G

  • L2-G

  • N-G

• Maximum Continuous Operating Voltage (MCOV):

  • 300V Line-to-Line

  • 150V Line-to-Ground

• Voltage Protection Rating (VPR):

  • 1000V Line-to-Line

  • 500V Line-to-Ground

• Connection Leads: 36-inch wire leads

• Enclosure Rating: NEMA 4X / IP67

• Installation Location: Indoor or Outdoor

Certifications and Compliance

ETL Listed to UL 1449 5th Edition and CSA C22.2 No. 269.1 / 269.2, with additional testing to FCC 47 CFR Part 15: 2024 and ICES-003: 2020.

The PHSD240V is an excellent choice for helping protect:

• Main electrical panels

• HVAC systems and air handlers

• Appliances

• Smart home electronics

• Garage and workshop equipment

• Pump and well systems

• Generators

• PV and solar-related electrical equipment

• Other sensitive household and light commercial electrical loads