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Bad Wolf HVAC Surge Protector
HVAC Surge Protector
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Service Panel Surge Protector 50kA
SP240V50KA 240V Split-Phase 50kA Type 1 Whole-House Surge Protector - Image 6
SP240V50KA 240V Split-Phase 50kA Type 1 Whole-House Surge Protector - Image 7

SP240V50KA 240V Split-Phase 50kA Type 1 Whole-House Surge Protector

$89.00

Key benefits

  • Type 1 whole-home protection for 120/240V split-phase service (service entrance / panel)

  • 50 kA per phase surge current capacity

  • Nominal Discharge Current (In): 10 kA (UL 1449 performance metric)

  • 100 kA SCCR (RMS symmetrical) for high fault-current environments

  • Low VPR: 1000V L-L / 500V L-G to help protect sensitive electronics

  • NEMA 4X / IP67, V-0 enclosure for durable indoor/outdoor installation

  • Pre-wired with 36″ of 12 AWG leads for flexible mounting and clean routing

  • Status LED: Green = Protected, Off = Replace

  • Backed by a 5-year warranty

Listings & Compliance

  • Intertek ETL Listed to UL 1449 (5th Edition)

  • Certified to CSA C22.2 No. 269.1 & 269.2

  • EMC Tested: FCC 47 CFR Part 15 (2024) and ICES-003 (2020)

Specifications

  • Electrical system: 120/240V split-phase, 50/60 Hz

  • SPD Type: Type 1

  • Surge current capacity: 50 kA per phase

  • Nominal Discharge Current (In): 10 kA

  • SCCR: 100 kA RMS symmetrical

  • MCOV: 300 VAC L-L / 150 VAC L-G

  • VPR: 1000V L-L / 500V L-G

  • Protection modes: 3 (L1–L2, L1–G, L2–G)

  • Response time: as fast as 500 picoseconds

  • Enclosure: NEMA 4X / IP67, flammability V-0 housing

  • Wiring: 36 inches, 12 AWG leads (pre-wired)

  • Warranty: 5 years

SKU: SP240V50KA Category:

Bad Wolf SP240V50KA — 120/240V Split-Phase Type 1 Whole-Home Surge Protector (3-Wire, NEMA 4X)

Protect your 120/240V split-phase electrical system from transient overvoltage events caused by lightning, utility switching, and large motor loads. The Bad Wolf SP240V50KA is a 3-wire Type 1 surge protective device (SPD) designed for service equipment and panel protection, operating at 240 VAC line-to-line and 120 VAC line-to-ground.

Built for demanding environments, the SP240V50KA features a rugged NEMA 4X / IP67 enclosure for indoor or outdoor installation and fast surge diversion to help reduce the risk of damage to appliances, HVAC equipment, and sensitive electronics. A sealed, tamper-resistant design supports long-term reliability, and a simple status indicator confirms protection at a glance (Green = Protected, Off = Replace).

Key Features & Benefits

⚡ High surge capability — 50 kA per phase with 100 kA SCCR (RMS symmetrical) for robust protection in high fault-current environments.
🎯 Low let-through protection — VPR 1000V L-L / 500V L-G to help protect sensitive electronics and controls.
🔌 Split-phase optimized (3-wire) — Protection modes: L1–L2, L1–G, L2–G for comprehensive coverage on 120/240V service.
🧰 Pre-wired for flexible installs — Includes 36 inches of 12 AWG leads for mounting and routing convenience.
🌧 Indoor/outdoor rated — NEMA 4X / IP67, V-0 flammability housing for durable performance in harsh locations.
✅ Simple status indication — Green = Protected; Off = Replace for quick visual confirmation.
🇺🇸 Made in the USA — Built by a Service-Disabled Veteran-Owned manufacturer.

Installation notes

  • Mount as close to the service equipment/panel as practical and keep leads short and straight for best performance.

  • Install per NEC and local electrical code. A licensed electrician is recommended.

  • For outdoor installs, mount to maintain sealing and use appropriate cable management (drip loop, strain relief).

LED status

  • Green ON: Protected / normal operation

  • OFF: Replace unit (protection has reached end-of-life)

Additional information

Weight 8 oz
Dimensions 2.5 × 2.4 × 2 in
Application

Commercial, EV Charging Station, Farm, Generator, Home, HVAC, Irrigation, Marine, RV, Solar, Wind
Connection Type

Hardwire
Environmental Rating

Indoor, Outdoor
Service Type

Split Phase
SPD Classification

Type 1, Type 2
Surge Current Rating (A)

50kA
Type of Electrical Current

AC
Voltage (Vac)

240
Surge Type Category Rating

Lightning
Is this Type 1?
Yes — SP240V50KA is a Type 1 SPD intended for service equipment/panel applications when installed per code.
Can it be installed outdoors?
Yes — the enclosure is NEMA 4X / IP67, suitable for indoor or outdoor installation.
What does 50 kA mean?
This model is rated 50 kA per phase surge current capacity.
What should I do if the LED turns off?
If the status LED is OFF, the unit should be replaced.
Will this help protect my mini-split / HVAC system?
Yes—installing the SP240V50KA at the service panel helps protect HVAC electronics and other connected equipment from damaging surges.

Bad Wolf USA ImageOptional Mounting Kit:  50KA-KIT
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90 Degree Half Inch Black Liquid Tight FittingOptional BLK 90 Degree Conduit Elbow Fitting:  1/2″ BLK 90 DEG
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Half Inch Black Liquid Tight FittingOptional BLK Straight Conduit Fitting: 1/2: BLK STR
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Half Inch Gray Liquid Tight FittingOptional GRAY Straight Conduit Fitting:   1/2″ GRAY STR
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Liquid Tight ConduitOptional 1/2 inch Liquid-Tight Flexible Conduit:    1/2″ FLEXIBLE LIQUID-TIGHT CONDUIT
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