SP240V50KA-A Electrical Panel Surge Protector – 120/240V Split Phase – 50kA – Panel Mount – Type 1 SPD
$89.00
The Bad Wolf SP240V50KA-A is a compact 3-wire Type 1 surge protection device designed for compatible 120/240V split-phase electrical systems. Its built-in 1/2-inch NPT male mounting connection allows the surge protector to mount directly to a compatible electrical panel or enclosure, providing a clean installation while helping keep conductor length short.
Key Features
- Direct panel-mount design: Built-in 1/2-inch NPT male connection for mounting directly to a compatible electrical panel or enclosure
- 3-wire configuration: L1, L2, and Ground for compatible 120/240V split-phase systems
- 50kA per phase surge current capacity
- Type 1 SPD: Suitable for compatible line-side or load-side applications when installed in accordance with applicable electrical codes
- Low VPR: 1000V L-L / 500V L-G
- 100kA SCCR
- NEMA 4X / IP67 enclosure: Suitable for indoor or outdoor installation
- Single green status LED: Green = protected; Off = replace
- 5-year limited warranty
SP240V50KA-A Electrical Panel Surge Protector – 120/240V Split Phase – 50kA Type 1 SPD
The Bad Wolf SP240V50KA-A is a compact 3-wire Type 1 surge protection device designed for compatible 120/240V split-phase electrical systems. It provides surge protection for L1-L2, L1-G, and L2-G and is well suited for protecting individual equipment circuits, HVAC systems, pumps, subpanels, and other compatible electrical applications.
The SP240V50KA-A is the direct panel-mount version of the SP240V50KA. Instead of using a conduit connection, the enclosure incorporates a 1/2-inch NPT male mounting connection that can be installed directly into a compatible 1/2-inch knockout in an electrical panel or enclosure. This mounting style allows the SPD to be positioned close to the electrical connection point and helps keep conductor length short.
Designed for demanding environments, the SP240V50KA-A uses a rugged NEMA 4X / IP67 enclosure suitable for indoor or outdoor applications. A single green LED provides an easy visual indication of protection status.
Key Features & Benefits
- Direct panel-mount design: Built-in 1/2-inch NPT male connection allows direct mounting to a compatible electrical panel or enclosure.
- 3-wire configuration: L1, L2, and Ground for compatible 120/240V split-phase electrical systems.
- 50kA per phase surge current capacity: Provides surge protection for connected electrical equipment and circuits.
- Type 1 SPD: Suitable for compatible line-side or load-side applications when installed in accordance with applicable electrical codes.
- 10kA nominal discharge current (In): Designed and tested for demanding surge environments.
- Low VPR: 1000V L-L and 500V L-G.
- Low MCOV: 300V L-L and 150V L-G.
- 100kA SCCR: Suitable for high available fault-current environments when properly applied.
- Indoor/outdoor enclosure: NEMA 4X / IP67 construction for protection from environmental exposure.
- Simple status indication: A single green LED provides at-a-glance protection status.
- Made in the USA: Manufactured by Bad Wolf, a Service-Disabled Veteran-Owned Small Business.
Installation Notes
Mount the SP240V50KA-A directly to a compatible 1/2-inch electrical panel or enclosure knockout using the device's built-in 1/2-inch NPT male connection. Locate the SPD as close to the electrical connection point as practical and keep all conductors as short, straight, and direct as possible for optimum surge protection performance.
The SP240V50KA-A uses three electrical conductors: L1, L2, and Ground. Installation should be performed by a qualified electrician in accordance with the product installation instructions, the National Electrical Code (NEC), and applicable local electrical codes.
LED Status Indicator
- Green ON: Protected / normal operation
- Green OFF: Protection is no longer active and the unit should be replaced
Important: Because the SP240V50KA-A is a 3-wire L1/L2/G device, Bad Wolf generally recommends it for individual equipment, circuit, and similar surge protection applications rather than as the primary whole-home surge protector. For primary whole-home protection, consider a Bad Wolf 4-wire L1/L2/N/G model beginning with the SP240V65KA or higher.
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, Subpanel |
| 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 | 8 oz |
Installation
Professional installation is recommended. Installation should be performed by a qualified electrical professional 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 and wiring configuration of the circuit or equipment being protected.
Direct Panel-Mount Installation
- The SP240V50KA-A is designed for compatible 120/240V split-phase electrical systems.
- This model uses a 3-wire connection: L1, L2, and Ground. It does not use a neutral connection.
- The SP240V50KA-A includes a built-in 1/2-inch NPT male mounting connection designed to mount directly into a compatible 1/2-inch electrical panel or enclosure knockout.
- Position the surge protector as close to the electrical connection point as practical.
- Keep all conductors as short, straight, and direct as possible between the surge protector and the electrical connection point.
- Avoid sharp bends, coils, loops, or unnecessary conductor length, as additional conductor length can reduce surge protection performance.
- Connect the conductors according to the product wiring diagram, product label, and applicable electrical code requirements.
- Use the appropriate electrical connection method, overcurrent protection, disconnecting means, and other installation components required for the specific application and applicable electrical codes.
- Maintain the integrity of the electrical enclosure and use appropriate sealing methods when the installation is exposed to moisture or outdoor conditions.
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 used with the SP240V50KA-A.
For Best Surge Protection Performance
The physical installation of a surge protection device has a direct effect on its performance. Install the SP240V50KA-A as close to the protected circuit or equipment connection point as practical and minimize the length of all connecting conductors.
Whenever possible:
- Keep conductors short and straight.
- Avoid unnecessary bends and loops.
- Do not coil excess wire.
- Route conductors using the most direct path available.
- 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: Protection is no longer active and the surge protector should be replaced
If the green LED does not illuminate after installation, disconnect power and verify the wiring and electrical connections before placing the protected equipment back into service.
Important: Refer to the product label and Bad Wolf installation instructions for product-specific wiring 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 commonly used to help protect HVAC condenser units, heat pump outdoor units, mini-split systems, pool pumps, well pumps, irrigation pumps, dedicated equipment circuits, subpanels, and similar compatible 120/240V electrical applications from damaging power surges.
What is the difference between the SP240V50KA-A and SP240V50KA?
Both models provide 50kA-per-phase surge protection for compatible 120/240V split-phase electrical systems and use a 3-wire L1/L2/Ground configuration. The primary difference is the mounting method.
The SP240V50KA-A has a built-in 1/2-inch NPT male mounting connection for mounting directly to a compatible electrical panel or enclosure knockout. The standard SP240V50KA is designed for installations using a conduit connection.
How is the SP240V50KA-A mounted?
The SP240V50KA-A includes a built-in 1/2-inch NPT male connection designed to mount directly into a compatible 1/2-inch knockout in an electrical panel or enclosure. Direct mounting allows the surge protector to be positioned close to the electrical connection point and can help keep conductor length short.
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 units, and similar equipment operating on a compatible 120/240V electrical system.
Can the SP240V50KA-A be used on a pool pump?
Yes. The SP240V50KA-A may be used to help protect compatible pool pump circuits when the circuit 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, and similar equipment circuits when the voltage and electrical configuration match the product specifications.
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 two line conductors and an equipment grounding conductor.
Does the SP240V50KA-A require a neutral connection?
No. The SP240V50KA-A is a 3-wire L1/L2/Ground surge protector and does not use a neutral connection.
Can the SP240V50KA-A be used as a whole-house surge protector?
The SP240V50KA-A is a Type 1 surge protective device and can be installed in compatible electrical-panel applications when permitted by the product instructions and applicable electrical codes. However, because it is a 3-wire L1/L2/Ground device, Bad Wolf generally recommends it for dedicated equipment, circuits, subpanels, and similar applications rather than as the primary whole-home surge protector.
For primary whole-home surge protection, Bad Wolf recommends considering a 4-wire L1/L2/Neutral/Ground model beginning with the SP240V65KA or higher.
Why does Bad Wolf recommend a 4-wire model for primary whole-home protection?
A 4-wire Bad Wolf whole-home surge protector connects to L1, L2, Neutral, and Ground and provides additional protection modes involving the neutral conductor. This makes the 4-wire models better suited to protecting the complete 120/240V split-phase electrical system at the home's main electrical panel.
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 and is designed to divert damaging transient surge energy away from compatible connected electrical equipment.
Is the SP240V50KA-A a Type 1 surge protective device?
Yes. The SP240V50KA-A is a Type 1 surge protective device. Type 1 SPDs are suitable for compatible Type 1 applications and may also be used in compatible Type 2 applications when installed according to the product instructions and applicable electrical codes.
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: Protection is no longer active and the surge protector should be replaced
Can the SP240V50KA-A be installed outdoors?
Yes. The SP240V50KA-A uses a rugged NEMA 4X / IP67 enclosure suitable for indoor or outdoor applications when properly installed in accordance with the product instructions and applicable electrical requirements.
Who should install the SP240V50KA-A?
Installation should be performed by a qualified electrical professional or other qualified installer familiar with the equipment and electrical 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?
The SP240V50KA-A is a Type 1 surge protective device. The required connection and overcurrent-protection method depends on where and how the device is installed. Follow the Bad Wolf installation instructions, product labeling, applicable electrical codes, and requirements of the authority having jurisdiction for the specific installation.
Does the SP240V50KA-A include a warranty?
Yes. The SP240V50KA-A includes a 5-year limited product warranty. Refer to the current Bad Wolf warranty terms for complete coverage, registration, eligibility, limitations, and connected-equipment coverage information.
Specifications
SP240V50KA-A Specifications
| Model Number | SP240V50KA-A |
|---|---|
| Product Type | 3-wire direct panel-mount surge protection device |
| SPD Type | Type 1 |
| 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 | Hardwire, pre-wired leads; built-in 1/2-inch NPT male panel-mount connection |
| Wiring | 36 inches of 12 AWG leads |
| 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 | 8 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 |