Description
Square D by Schneider Electric Surge Protection Device (SPD) for home appliances, distribution panels, and HVAC equipment, 50kA, 120/240V Input, Single Phase, 3-Wire
Square D by Schneider Electric Home Electronics Protective Device (HEPD50)
The Square D HEPD50 (Home Electronics Protective Device) by Schneider Electric is a whole-home Type 1 and Type 2 Surge Protective Device (SPD). Engineered to safeguard expensive household electronics, smart appliances, HVAC equipment, and variable-speed motors against transient electrical surges, the HEPD50 provides a 50kA surge current capacity per phase, universal electrical panel compatibility, and a weatherproof NEMA 4X enclosure suitable for indoor load centers or harsh outdoor installations.
Key Features & Performance Benefits
- Mid-Tier Whole-Home Protection: Delivers 50kA surge capacity per phase to absorb medium-to-high energy transients originating from lightning storms, grid switching, and internal inductive loads like AC compressors.
- Dual Type 1 & Type 2 Certification: UL 1449 4th Edition listed for mounting on either the line side of service equipment (Type 1, no breaker required) or downstream on the load side (Type 2, fed by a 2-pole breaker).
- Universal Brand Compatibility: Nipple-mount design connects via any standard 1/2-inch trade size knockout to any residential panel brand, including Square D (QO & Homeline), Siemens, Eaton, GE, and Leviton.
- Dual Operational LED Indicators: Features independent green diagnostic LEDs per phase that remain illuminated while surge suppression is active, clearly indicating when replacement is necessary.
- NEMA 4X Rated Housing: Corrosion-resistant, UV-stabilized non-metallic enclosure permits installation in indoor basements and garages, as well as outdoor meter-main combos and service entrance panels.
- Short Circuit Current Rating (SCCR): Rated for 25kA SCCR, coordinating with standard residential distribution systems.
Electrical Performance Data
| Specification | Details |
|---|---|
| Surge Current Capacity (Per Phase) | 50 kA (100 kA Total Peak Surge) |
| Nominal Discharge Current (In) | 10 kA |
| Short Circuit Current Rating (SCCR) | 25 kA |
| Operating Voltage | 120/240V AC, Single-Phase 3-Wire + Ground (50/60 Hz) |
| Voltage Protection Rating (VPR) | 600V (L-N), 1000V (L-L), 1000V (L-G), 900V (N-G) |
| Maximum Continuous Operating Voltage (MCOV) | 150V (L-N), 300V (L-L) |
| Recommended Upstream Circuit Breaker | 2-Pole 15A or 20A Circuit Breaker (for Type 2 installation) |
| Wiring Leads | #14 AWG Stranded Wire Leads (Black, Black, White, Green) |
Frequently Asked Questions
What does "HEPD50" stand for in Square D's catalog?
"HEPD" stands for Home Electronics Protective Device, and "50" designates its surge current capacity rating of 50 kA per phase (100 kA total device surge capacity).
How does the HEPD50 compare to the HEPD25 and HEPD80?
The HEPD50 sits between the entry-level HEPD25 (25 kA/phase) and the heavy-duty HEPD80 (80 kA/phase). It uses the larger chassis shared with the HEPD80, meaning it is compatible with the HEPD58MKF flush mount kit, rather than the HEPD25MKF kit used for the smaller HEPD25.
Which flush mount kit is compatible with the HEPD50?
The compatible flush mounting kit is catalog number HEPD58MKF. Because the HEPD50 shares physical case dimensions with the HEPD80, it will not fit the smaller HEPD25MKF kit.
What does it mean if one or both green indicator LEDs turn off?
Each green LED monitors the health of an individual phase. If an LED is off while the breaker is energized, the internal metal oxide varistors (MOVs) on that phase have sacrificed themselves to block a severe surge event, and the entire HEPD50 unit must be replaced.
Doumentation
Download the official manufacturer documentation and specifications:
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Additional Information
Our Part No: |
BSF-SESQD-HEPD50 |
Mfr Part #: |
HEPD50 |
Brand: |
Square D by Schneider Electric |
Fixture Type: |
Service Entry, HVAC |
Voltage: |
120/240V |
Surge Protection: |
Tri-mode |
Surge Current Rating: |
50kA/phase |
Product Data Sheet: |
See PDF Link Provided |
Dimensions: |
2.95" H x 3.32" W x 2.10" D |
Voltage Protection Rating: |
600V (L-N), 1000V (L-L), 1000V (L-G), 900V (N-G) |
Enclosure: |
NEMA 4X |
Warranty: |
Manufacturer's |
Case Size: |
10 |
