PHSD240V Whole House Surge Protector (120/240V Split-Phase, 520kA, ETL Listed)
$449.00
PHSD240V is a 520kA Type 1 whole house surge protector for 120/240V split-phase electrical systems. Designed to help protect electrical panels and connected equipment from damaging surges, it features 6 modes of protection, 100kA SCCR, and a rugged NEMA 4X / IP67 enclosure for indoor or outdoor installation. 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.
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
Product Details
| Weight | 19 oz |
|---|---|
| Dimensions | 5 × 4 × 2 in |
| Application | Commercial, EV Charging Station, Farm, Generator, Home, Irrigation, Marine, RV, Solar, Wind |
| Connection Type | Hardwire |
| Surge Type Category Rating | EMP (E1, E2 and E3 Phase), Lightning, Solar Flare (CME) |
| Environmental Rating | Indoor, Outdoor |
| Product Dimensions | 5"x4"x2" |
| Product Weight | 18 oz |
| Service Type | Split Phase |
| Surge Current Rating (A) | 520kA |
| Type of Electrical Current | AC |
| SPD Classification | Type 1, Type 2 |
| Voltage (Vac) | 240 |
Specifications
Review the product details and product description for voltage, surge current rating, connection type, enclosure rating, wiring details, certifications, and other technical information.
For detailed product-specific ratings, refer to the specifications listed on this product page and any available product documentation.
Installation
Installation should be performed by a qualified electrician, licensed contractor, or qualified installer in accordance with the product instructions, applicable electrical codes, and local requirements.
Always disconnect power before installation and verify the product is suitable for the electrical system where it will be installed.
Warranty
Bad Wolf surge protection devices include a 5-year product warranty.
Eligible products may also include connected equipment warranty coverage when properly installed and registered according to the warranty terms.
Please review the full warranty terms for complete details, limitations, registration requirements, and coverage information.
FAQ
What is the PHSD240V mainly used for?
The PHSD240V is commonly used as a premium high-capacity whole-house surge protector for residential, light commercial, garage, workshop, and small business 120/240V split-phase electrical systems.
Where is the PHSD240V installed?
The PHSD240V is typically installed at the main electrical panel, service equipment, or another compatible panel location to help protect connected equipment throughout the electrical system from damaging power surges.
What type of electrical system is this surge protector designed for?
The PHSD240V is designed for 120/240V split-phase electrical systems commonly used in homes, garages, workshops, small businesses, and light commercial applications.
Can the PHSD240V be used as a whole-house surge protector?
Yes. The PHSD240V is designed for whole-house surge protection applications when properly installed on a compatible 120/240V split-phase electrical system.
How is the PHSD240V different from the HSD240V?
The PHSD240V is the higher-capacity version of the HSD240V. Both products are designed for the same type of 120/240V split-phase applications, but the PHSD240V has a 520KA surge current rating compared to the 260KA surge current rating of the HSD240V.
What does the 520KA rating mean?
The 520KA rating refers to the surge current capacity of the device. The PHSD240V is designed for customers who want one of Bad Wolf’s highest-capacity whole-house surge protection options for compatible 120/240V split-phase electrical systems.
Does the PHSD240V protect against lightning?
The PHSD240V is designed to help protect against surge events caused by indirect lightning activity. No surge protector can guarantee protection from a direct lightning strike, but a properly installed surge protective device can help reduce the risk of damage from surge energy entering the electrical system.
Does the PHSD240V provide EMP, CME, or solar flare protection?
Yes. The PHSD240V is designed to help protect against damaging surge activity associated with electromagnetic disturbance events, including EMP, CME, and solar flare related electrical disturbances. Proper installation, grounding, and bonding are important for effective protection.
Should I choose the PHSD240V or the HSD240V?
The HSD240V is a strong high-capacity whole-house surge protection option with a 260KA surge current rating. The PHSD240V is the higher-capacity option with a 520KA surge current rating for customers who want Bad Wolf’s highest protection level in this product group.
What do the two green LED indicator lights mean?
The PHSD240V has two green LED status lights: one for Line 1 and one for Line 2. When a green light is on, that line’s protection is functioning correctly. If one of the green lights is off, that side’s protection has been damaged and the surge protector should be replaced.
Does the PHSD240V have red indicator lights?
No. The PHSD240V does not use red indicator lights. It uses two green LED status lights to show the protection status for Line 1 and Line 2.
Is this a Type 1 surge protective device?
Yes. The PHSD240V is a Type 1 surge protective device, which allows it to be installed on the line side or load side of the service disconnect when installed in accordance with the product instructions and applicable electrical codes.
Does this surge protector need to be installed with a circuit breaker?
This surge protector is a Type 1 surge protective device and does not have to be installed in conjunction with a circuit breaker when installed as a Type 1 SPD in accordance with the product instructions and applicable electrical codes.
If this surge protector is installed as a Type 2 SPD on the load side of the service disconnect, Bad Wolf recommends using a 20 amp double-pole circuit breaker unless otherwise required by the authority having jurisdiction, local code, or the specific installation conditions.
Can this surge protector be installed outdoors?
Yes. The PHSD240V uses a durable enclosure suitable for indoor or outdoor installation when installed according to the product instructions and applicable electrical codes.
Who should install this product?
This product should be installed by a qualified electrician, licensed contractor, or qualified installer familiar with electrical panels, service equipment, grounding, bonding, and surge protective devices.
Does this product include a warranty?
Bad Wolf surge protection devices include a 5-year product warranty. Eligible products may also include connected equipment warranty coverage when properly installed and registered according to the warranty terms.