Description
Leviton P2120-B Whole-Home Surge Protective Device
Quick Answer: The Leviton P2120-B is a whole-home Type 1 Whole-House Surge Protective Device (SPD) engineered for 120/240V split-phase residential electrical panels. It provides 50 kA of surge current protection per phase (25 kA per mode), features a 200 kA Short Circuit Current Rating (SCCR), and comes housed in a NEMA 4X weather-resistant enclosure for indoor or outdoor panel installation.
Leviton P2120-B Overview & Key Features
The Leviton P2120-B Whole-House Surge Protective Device delivers high-capacity surge suppression to protect sensitive appliances, smart devices, and home automation electronics against utility switching spikes and indirect lightning strikes:
- Type 1 SPD Versatility: Approved for line-side installation (before the main disconnect) or load-side installation (after the main breaker).
- High Surge Capacity: Thermally protected Metal Oxide Varistors (MOVs) divert up to 50 kA maximum surge current per phase safely to ground.
- Real-Time LED Diagnostics: Visual green LED indicators confirm active surge protection status across both 120V hot legs.
- Weatherproof NEMA 4X Enclosure: Built with a UV-stabilized, water-tight, and dust-proof enclosure for reliable indoor or outdoor panel mounting.
Leviton P2120-B Technical Specifications
Core performance specifications and electrical ratings for the Leviton P2120-B Surge Protective Device:
| Specification Parameter | Rating / Value | Details & Standard |
|---|---|---|
| Operating Voltage | 120/240 VAC | Single/Split-Phase, 50/60 Hz standard residential supply |
| SPD Rating Type | Type 1 / Type 2 | UL 1449 4th Edition Listed |
| Max Surge Current Capacity | 50 kA per Phase | 25 kA per Mode (L-N, L-L) |
| Short Circuit Current Rating (SCCR) | 200 kA | High-capacity short circuit protection rating |
| Nominal Discharge Current (In) | 10 kA | UL 1449 tested discharge capacity rating |
| Voltage Protection Rating (VPR) | 600V (L-N) / 1000V (L-L) | Low clamping threshold voltage protection level |
| Enclosure Rating | NEMA 4X / IP66 | Weather-proof, corrosion-resistant plastic enclosure |
Installation & Mounting Guidelines
- Mounting Nipple: Mounts directly to any standard electrical panel using a 1/2" threaded conduit knockout nipple.
- Breaker Connection (Load Side): When installed on the load side of an electrical panel, connect via a dedicated 20A 2-pole double-pole circuit breaker.
- Lead Length Optimization: Keep all connecting wires (Hot, Neutral, Ground) as short and straight as possible during installation to minimize lead inductance and optimize response time.
Frequently Asked Questions
What is the difference between the Leviton P2120-B and R2120-B?
The Leviton P2120-B offers higher surge protection capacity at 50 kA max surge current per phase (compared to 36 kA on the R2120-B) and lower clamping Voltage Protection Ratings (VPR), providing enhanced protection for whole-home electrical systems.
Can the Leviton P2120-B be installed outdoors?
Yes. The P2120-B features a rugged NEMA 4X weather-resistant enclosure designed to withstand outdoor weather elements including rain, snow, dust, and UV exposure.
How do I verify the Leviton P2120-B is functioning?
Look at the LED diagnostic lights on the front panel. Green illuminated lights indicate active protection on both 120V lines. If an LED extinguishes, the surge protector has sustained a catastrophic surge and needs to be replaced.
Spec Sheets
Download the official manufacturer documentation and specifications:
Additional Information
Our Part No: |
BSF-LVTN-P2120-B |
Mfr Part #: |
P2120-B |
Brand: |
Leviton |
Fixture Type: |
Service Entry, HVAC |
Surge Protection: |
Split Phase |
Voltage: |
120/240V |
Protection per Mode / per Phase: |
50kA / 50kA |
Voltage Protection Rating: |
L-N: 700V, L-G: 1200V, N-G: 600V, L-L: 1200V |
Product Data Sheet: |
See PDF Link Provided |
Dimensions: |
5.02" x 2.93" x 3.25" |
Enclosure: |
NEMA 4X |
Warranty: |
Manufacturer's |
Case Size: |
10 |
