SP240V50KA-A 50kA Type 1 Whole-House Surge Protector – 120/240V – Panel Mount
$89.00
SP240V50KA-A 50kA Type 1 Whole-House Surge Protector
The SP240V50KA-A is a compact 50kA Type 1 whole-house surge protector designed for 120/240V split-phase electrical systems. It can be installed in compatible service-entrance applications and can also be used in appropriate load-side locations.
Its built-in 1/2-inch NPT male connection allows direct mounting to a compatible electrical panel or enclosure, making it a practical choice for whole-house surge protection while also being well suited for HVAC equipment, pumps, motors, subpanels, and other dedicated electrical loads.
Type 1 SPD — Can Also Be Installed in Compatible Type 2 Load-Side Locations
SP240V50KA-A 50kA Type 1 Whole-House Surge Protector
The Bad Wolf SP240V50KA-A is a compact, hardwired 50kA Type 1 surge protective device designed for 120/240V split-phase electrical systems. It provides a practical whole-house surge protection solution with a direct panel-mount design that is also well suited for dedicated equipment applications.
As a Type 1 SPD, the SP240V50KA-A can be installed in compatible service-entrance applications and can also be installed in appropriate load-side locations where a Type 2 SPD might otherwise be considered. Installation must follow the product listing, installation instructions, applicable electrical codes, and the configuration of the electrical system.
Whole-House and Equipment Protection
The SP240V50KA-A is suitable for whole-house surge protection and can also be used to help protect electrical panels and circuits serving equipment such as:
- Whole-house 120/240V electrical systems
- Main electrical panels
- Compatible subpanels
- HVAC and air-conditioning equipment
- Heat pumps
- Well and pool pumps
- Motors and motor-driven equipment
- Garages and workshops
- Other dedicated 120/240V electrical loads
Compact Type 1 Design
With a 50kA surge current capacity, the SP240V50KA-A provides a compact starting point for homeowners who want permanently installed whole-house surge protection. Customers wanting additional surge-current capacity can also compare Bad Wolf's higher-capacity 65kA, 100kA, 200kA, 225kA, 400kA, HSD, and PHSD whole-house surge protector families.
Direct Panel-Mount Connection
The SP240V50KA-A includes a built-in 1/2-inch NPT male connection for direct mounting to a compatible electrical panel, disconnect, or enclosure. This provides a clean, compact installation without requiring a separate liquid-tight connector.
Type 1 Installation Flexibility
A Type 1 designation does not mean the SP240V50KA-A must be installed only at the service entrance. A properly selected Type 1 SPD can also be installed in a compatible Type 2/load-side location. This gives homeowners and installers greater flexibility when determining where whole-house surge protection should be installed.
SP240V50KA-A — Compact 50kA Type 1 whole-house surge protection with direct panel mounting and the versatility to also protect HVAC systems, pumps, motors, subpanels, and dedicated electrical equipment.
Product Details
| Weight | 8 oz |
|---|---|
| Dimensions | 2.5 × 2.5 × 2.25 in |
| Operating Voltage (Vac) | 120/240V |
| Electrical System | 120/240V Split Phase |
| Current Type | AC |
| SPD Type | Type 1, Type 2 |
| Recommended Applications | Dedicated Equipment, Electrical Panel, HVAC, Light Commercial Panel, Pump, Residential Panel, Service Entrance, Subpanel, Whole House |
| Installation / Connection Type | Panel Mount, Pre-wired Leads, Hardwire |
| Surge Current Capacity | 50kA |
| Surge Events Protected Against | Lightning-related surges, load switching transients, motor-generated surges, utility switching transients |
| Enclosure Rating | Indoor, IP67, NEMA 4X, Outdoor |
| Product Dimensions | 2.5 x 2.5 x 2.25 |
| Product Weight | 12 oz |
Installation
Professional installation is recommended.
The SP240V50KA-A connects directly to the electrical system and should be installed by a qualified electrical professional or other qualified installer familiar with the electrical system and equipment being protected. Follow the product label, installation instructions, applicable electrical codes, and local requirements.
Always disconnect power before installation.
Verify that power has been disabled using an appropriate voltage-sensing device before working on the electrical system. Confirm that the SP240V50KA-A is compatible with the voltage, wiring configuration, and installation location before installation.
Whole-House / Panel Installation
The SP240V50KA-A is a 50kA Type 1 surge protective device designed for compatible 120/240V split-phase electrical systems. As a Type 1 SPD, it can be installed in compatible service-entrance applications and can also be installed in appropriate load-side locations.
- The SP240V50KA-A uses a 3-wire connection: L1, L2, and Ground. It does not require a neutral connection.
- The SPD may be used for whole-house surge protection at compatible service equipment, main electrical panels, disconnects, or other approved service-entrance locations.
- The SP240V50KA-A may also be installed in compatible load-side applications, including main panels and subpanels.
- A Type 1 SPD is not limited to service-entrance installation. The SP240V50KA-A may also be installed in an appropriate location where a Type 2/load-side SPD would normally be used.
Direct Panel-Mount Installation
- The SP240V50KA-A includes a built-in 1/2-inch NPT male connection for direct mounting to a compatible electrical panel, disconnect, or enclosure.
- Direct mounting allows the surge protector to be positioned close to the electrical connection point and helps minimize unnecessary conductor length.
- Mount the surge protector securely using the appropriate connection method and hardware for the electrical panel or enclosure.
- Maintain the integrity of the electrical enclosure and use appropriate sealing methods when the installation is exposed to moisture or outdoor conditions.
HVAC, Pump, Motor & Dedicated Equipment Applications
In addition to whole-house surge protection, the compact SP240V50KA-A is well suited for dedicated electrical equipment and panel applications, including:
- HVAC condensers and heat pumps
- Mini-split outdoor equipment
- Pool pumps and pool equipment panels
- Well, irrigation, and septic pumps
- Motors and motor-driven equipment
- Garages and workshops
- Compatible subpanels
- Other dedicated 120/240V electrical loads
Electrical Connections
- Black Wire – L1: Connect to Line 1.
- Red Wire – L2: Connect to Line 2.
- Green Wire – Ground: Connect to the equipment grounding system.
No neutral connection is required for the SP240V50KA-A.
Connect all conductors according to the product wiring diagram, product label, installation instructions, and applicable electrical code requirements.
Use the appropriate electrical connection method, overcurrent protection, disconnecting means, and other installation components required for the specific installation and applicable electrical codes.
For Best Surge Protection Performance
The physical installation of a surge protective device can affect its performance. Install the SP240V50KA-A as close to the electrical connection point as practical and minimize the length of the connecting conductors.
- Keep conductors as short and straight as practical.
- Avoid unnecessary bends and loops.
- Do not coil excess conductor length.
- Route conductors using the most direct path practical.
- Maintain secure electrical and grounding connections.
Status Indicator
After installation is complete and all electrical connections have been verified, restore power and check the green status LED.
- Green ON: Protected / normal operation
- Green OFF: Replace unit
If the green LED does not illuminate after installation, disconnect power and verify the wiring and electrical connections before placing the system into service.
Important:
Refer to the SP240V50KA-A product label and Bad Wolf installation instructions for product-specific wiring and installation requirements. Installation must comply with the National Electrical Code (NEC), applicable local electrical codes, and requirements of the authority having jurisdiction.
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 SP240V50KA-A mainly used for?
The SP240V50KA-A is a compact 50kA Type 1 surge protective device designed for whole-house surge protection on compatible 120/240V split-phase electrical systems. It is also well suited for HVAC equipment, heat pumps, pool pumps, well pumps, irrigation pumps, motors, subpanels, garages, workshops, and other dedicated electrical loads.
Can the SP240V50KA-A be used as a whole-house surge protector?
Yes. The SP240V50KA-A is designed for whole-house surge protection on compatible 120/240V split-phase electrical systems. Its compact size and direct panel-mount connection make it a practical 50kA Type 1 option for installation at compatible service equipment, main electrical panels, and other approved locations.
Is the SP240V50KA-A a Type 1 surge protective device?
Yes. The SP240V50KA-A is a Type 1 surge protective device. A Type 1 SPD can be installed in compatible service-entrance applications and can also be installed in appropriate load-side locations when installed in accordance with the product instructions, listing requirements, and applicable electrical codes.
Can a Type 1 SP240V50KA-A be installed where a Type 2 SPD would normally be used?
Yes, in compatible load-side applications. A Type 1 SPD is not limited to service-entrance installation. The SP240V50KA-A can also be installed in an appropriate Type 2/load-side location when permitted by the product instructions and electrical system configuration.
What type of electrical system is the SP240V50KA-A designed for?
The SP240V50KA-A is designed for compatible 120/240V split-phase AC electrical systems. It uses an L1, L2, and Ground connection.
Does the SP240V50KA-A require a neutral connection?
No. The SP240V50KA-A is a 3-wire L1/L2/Ground surge protective device and does not require a neutral connection. Its protection modes are L1-L2, L1-G, and L2-G.
Does being a 3-wire SPD prevent it from being used for whole-house protection?
No. The SP240V50KA-A's 3-wire configuration does not prevent it from being used as a whole-house surge protector. The important considerations are that the electrical system matches the product ratings and that the SPD is installed according to the product instructions and applicable electrical codes.
What is the difference between the SP240V50KA-A and SP240V50KA?
Both models provide 50kA-per-phase Type 1 surge protection for compatible 120/240V split-phase electrical systems and use the same L1/L2/Ground electrical configuration. The primary difference is the mounting method.
The SP240V50KA-A has a built-in 1/2-inch NPT male connection for direct mounting to a compatible electrical panel or enclosure. The standard SP240V50KA uses a 1/2-inch liquid-tight connection for installations where a flexible liquid-tight mounting arrangement is preferred.
How is the SP240V50KA-A mounted?
The SP240V50KA-A includes a built-in 1/2-inch NPT male connection designed for direct mounting to a compatible electrical panel, disconnect, or enclosure. Direct mounting allows the SPD to be positioned close to the electrical connection point and helps minimize unnecessary conductor length.
What does the 50kA rating mean?
The 50kA rating refers to the surge current capacity of the device. The SP240V50KA-A is rated for up to 50kA per phase. Surge current capacity should not be confused with Voltage Protection Rating (VPR), which is a separate performance specification.
Is 50kA enough for whole-house surge protection?
A 50kA Type 1 SPD can be a legitimate whole-house surge protection option when its voltage, electrical ratings, and installation requirements match the application. Homeowners who want additional surge-current handling capacity can also consider higher-capacity Bad Wolf whole-house surge protectors.
What if I want more surge-current capacity?
Bad Wolf offers higher-capacity whole-house surge protectors including 65kA, 100kA, 200kA, 225kA, 260kA HSD, 400kA, and 520kA PHSD product families. A higher kA rating provides additional surge-current handling capacity, but VPR, MCOV, installation location, mounting style, and electrical-system compatibility should also be considered.
Can the SP240V50KA-A be installed on an HVAC system?
Yes. The SP240V50KA-A is well suited for compatible HVAC condensers, heat pumps, mini-split outdoor equipment, and similar electrical loads when the electrical system matches the product ratings and installation requirements.
Can the SP240V50KA-A be used on a pool pump?
Yes. The SP240V50KA-A may be used to help protect compatible pool pump circuits, pool equipment panels, and similar motor-driven equipment when the voltage and wiring configuration match the product specifications.
Can the SP240V50KA-A be used on a well pump or irrigation pump?
Yes. The SP240V50KA-A may be used with compatible well pumps, irrigation pumps, septic pumps, and similar equipment circuits when the electrical system matches the product ratings and installation requirements.
Can the SP240V50KA-A be installed at a subpanel?
Yes. The SP240V50KA-A can be installed at a compatible subpanel or other appropriate load-side location. Installing surge protection at selected subpanels can also be part of a layered surge-protection strategy.
What does the green status light mean?
The SP240V50KA-A uses a single green LED to indicate protection status.
- Green ON: Protected / normal operation
- Green OFF: Replace unit
Can the SP240V50KA-A be installed outdoors?
Yes. The SP240V50KA-A uses a NEMA 4X / IP67 enclosure suitable for indoor or outdoor applications when properly installed according to the product instructions and applicable electrical requirements.
Who should install the SP240V50KA-A?
The SP240V50KA-A connects directly to the electrical system and should be installed by a qualified person familiar with the equipment and circuit being protected. Installation must follow the product instructions, product label, applicable electrical codes, and local requirements.
Does the SP240V50KA-A require a circuit breaker?
When the SP240V50KA-A is installed as a Type 1 SPD, it does not have to be installed in conjunction with a circuit breaker when installed in accordance with the product instructions and applicable electrical codes.
When installed in a Type 2/load-side application, Bad Wolf recommends a 20 amp double-pole circuit breaker unless otherwise required by the authority having jurisdiction, local electrical code, or the specific installation conditions.
Does the SP240V50KA-A include a warranty?
Yes. The SP240V50KA-A includes a 5-year limited product warranty. Eligible products may also include connected-equipment warranty coverage when properly installed and registered according to the applicable Bad Wolf warranty terms.
Specifications
SP240V50KA-A Specifications
| Model Number | SP240V50KA-A |
|---|---|
| Product Type | 3-wire Type 1 whole-house and equipment surge protective device |
| SPD Type | Type 1 — also suitable for compatible Type 2 load-side locations |
| Electrical System | 120/240V split-phase |
| Frequency | 50/60 Hz |
| Current Type | AC |
| Surge Current Capacity | 50kA per phase |
| Nominal Discharge Current (In) | 10kA |
| Short-Circuit Current Rating (SCCR) | 100kA RMS symmetrical |
| Maximum Continuous Operating Voltage (MCOV) | 300 VAC L-L / 150 VAC L-G |
| Voltage Protection Rating (VPR) | 1000V L-L / 500V L-G |
| Protection Modes | L1-L2, L1-G, L2-G |
| Response Time | As fast as 500 picoseconds |
| Connection Type | Hardwired with pre-wired leads and built-in 1/2-inch NPT male panel-mount connection |
| Wiring | 36 inches of 12 AWG leads |
| Recommended Applications | Whole-house surge protection, main electrical panels, compatible subpanels, HVAC equipment, heat pumps, pumps, motors, garages, workshops, and dedicated 120/240V electrical loads |
| Enclosure Rating | NEMA 4X / IP67 |
| Housing Flammability Rating | V-0 |
| Installation Environment | Indoor or outdoor |
| Status Indicator | Single green LED |
| LED Status | Green ON = Protected / normal operation; OFF = Replace unit |
| Product Dimensions | 2.5 x 2.5 x 2.25 in |
| Product Weight | 12 oz |
| Listings | Intertek ETL Listed to UL 1449 5th Edition; certified to CSA C22.2 No. 269.1 and 269.2 |
| EMC Compliance | FCC 47 CFR Part 15 and ICES-003 |
| Warranty | 5 years |