Square D Surgelogic HWB Surge ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,235.39
Square D Surgelogic HWB Surge Protective Device, 100kA, 120/240V 1-Phase, NEMA 4X

Square D Surgelogic HWB Surge Protective Device, 100kA, 120/240V 1-Phase, NEMA 4X

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Model: HWB11

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,235.39
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Square D Surgelogic HWB Surge Protective Device, 100kA, 120/240V 1-Phase, NEMA 4X

The Square D Surgelogic HWB Surge Protective Device is an externally mounted, UL Type 1 SPD designed for retrofit installation without modifying internal panel configurations. Rated for 100kA surge current on a 120/240V AC, 1-phase, 3-wire system, this NEMA 4X polycarbonate-enclosed unit delivers robust transient voltage protection for commercial and industrial electrical distribution equipment.

Key Features

  • Surge Current Rating: 100kA surge current capacity with a 20 kA nominal discharge current and 5 kA impulse current (Iimp) for dependable transient suppression.
  • Externally Mounted Design: Type HWB construction allows convenient external installation and maintenance access without internal panel modifications.
  • Rated Operational Voltage: 120/240V AC, 1-phase, 3-wire configuration with a 150V maximum continuous operating voltage (Uc).
  • NEMA 4X Polycarbonate Enclosure: Corrosion-resistant polycarbonate housing rated NEMA 4X for wet and outdoor-capable locations.
  • Local Signaling: Green status LED per phase for normal operation and red status LED per phase for fault indication.
  • Provided Equipment: Includes dry contacts and an alarm enable/disable switch for remote monitoring.
  • Connection Terminals: Accepts 10 AWG wire with a .91 m connection cable length.

Certifications & Compliance

  • UL 1449 Ed. 5 Listed
  • CSA C22.2 No. 269.1
  • UL 96A
  • NEMA 4X Rated Enclosure
  • Mercury Free Construction

Technical Specifications

  • Surge Current: 100 kA
  • Device Short Name: HWB
  • Uc Maximum Continuous Operating Voltage: 150 V
  • Take Back: No
  • Returnability: Yes
  • Sustainable Packaging: No
  • Mercury Free: Yes
  • Packaging Without Single Use Plastic: No
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • Legacy WEEE Scope: In
  • Packaging Made With Recycled Cardboard: No
  • With Recycled Cardboard: No
  • WEEE Product Category: 4
  • Without Single Use Plastic: No
  • ROHS Exemption Information: Yes

Typical Applications

  • Commercial and Industrial Electrical Panels
  • Retrofit Surge Protection Upgrades
  • Panelboard and Load Center Protection
  • Outdoor and Wet-Location Electrical Equipment
  • Renovation and New Construction Projects

Why Square D?

Square D backs the Surgelogic HWB with a durable NEMA 4X polycarbonate enclosure and UL 1449 Ed. 5 listing, delivering code-compliant surge protection for demanding electrical environments. With local LED fault signaling, dry contacts, and mercury-free construction, this device supports reliable, low-maintenance performance in professional electrical installations.

Manufacturer Resources

Product Specs

Product Type:
Surge Protective Device
Voltage Rating:
120/240V
Configuration:
NEMA 4X Enclosure
Standards:
UL 1449
Series:
Surgelogic
Country of Origin:
Mexico
Product Material:
Polycarbonate
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Panelboards & Load Centers

Square D HWB11 – Frequently Asked Questions

1) Can the Square D Surgelogic HWB11 be installed outdoors or in a wash-down area?
Yes. The HWB11 ships in a NEMA 4X polycarbonate enclosure, so it is rated for wet and outdoor-capable locations and resists corrosion. That is the reason to pick this one over a standard indoor-only NEMA 1 unit on a rooftop panel, a car wash, a food plant, or an exterior service entrance.
2) What electrical system does the Surgelogic HWB11 surge protector work on?
It is built for 120/240V AC single-phase, 3-wire service, with a maximum continuous operating voltage (Uc) of 150V. That covers the typical residential-style and light commercial split-phase panel. It is not a three-phase device, so for a 208Y/120 or 480Y/277 panel you need a different Surgelogic configuration.
3) Do I have to modify the panelboard to add the Surgelogic HWB?
No. The HWB is an externally mounted, UL Type 1 SPD. It bolts outside the gear and lands on the bus through a connection cable, so you are not reworking the internal panel configuration. That is what makes it the usual choice for retrofitting surge protection onto existing panelboards and load centers rather than swapping the panel.
4) How do I know if the HWB surge protector has failed?
Each phase has a green status LED for normal operation and a red status LED for a fault, so a walk-by tells you the state of the unit. It also includes dry contacts and an alarm enable/disable switch, which lets you wire the fault signal back to a BMS, an annunciator panel, or a maintenance alarm instead of relying on someone noticing the LED.
5) Does the Square D Surgelogic HWB11 meet UL 1449 for a spec submittal?
It is UL 1449 Edition 5 Listed as a Type 1 SPD, and also carries CSA C22.2 No. 269.1 and UL 96A. Type 1 means it can be applied on the line side of the service disconnect as well as the load side, which is what most service-entrance specs call for.
6) What is the difference between the Square D Surgelogic HWB11 and the Eaton BRNSURGE10 surge protective device?
They protect at different scales and mount differently. The Surgelogic HWB11 is an externally mounted UL Type 1 SPD rated 100 kA surge current on a 120/240V AC 1-phase 3-wire system, housed in a NEMA 4X polycarbonate enclosure with per-phase green and red status LEDs and dry contacts for remote monitoring. The Eaton BRNSURGE10 is a BR Series two-pole 10 kA device, so it is sized for a much lower surge current rating and installs as a breaker-style unit in a BR loadcenter rather than as a separate externally mounted enclosure. Choose the HWB11 when the job calls for a higher surge rating or an enclosure suited to wet and outdoor-capable locations; the BRNSURGE10 suits a point-of-panel install inside an Eaton BR panel.
7) Can I use the Eaton BRNSURGE10 instead of a Square D Surgelogic HWB11 on an outdoor panel?
Not as a like-for-like swap. The Surgelogic HWB11 is the one specified for that duty: its polycarbonate enclosure is rated NEMA 4X for wet and outdoor-capable locations, and it mounts externally to the distribution equipment so no internal panel modification is needed. The Eaton BRNSURGE10 is a BR Series two-pole device intended to land inside a BR loadcenter, so whatever enclosure protection it gets comes from the panel it sits in. For an outdoor or washdown location, or where the existing panel cannot be opened up for internal work, the externally mounted HWB11 is the correct choice.
8) Is 100kA overkill, and what does the rating actually mean on the Surgelogic HWB11?
The 100 kA figure is the surge current capacity of the device. Alongside it, the nominal discharge current (In) is 20 kA and the impulse current (Iimp) is 5 kA. For a 120/240V service entrance or a panel feeding sensitive loads, 100 kA is a common service-entrance class spec; a branch panel deeper in the building is often specified lower. Compare that with a small branch-level unit like the Eaton BRNSURGE10, which is a two-pole 10kA device.
9) How is the Surgelogic HWB different from a breaker-style surge device like the Eaton BRNSURGE10?
Two different approaches. The HWB is an external enclosure that mounts outside the gear and lands via cable, rated 100 kA on 120/240V single-phase, in a NEMA 4X housing. The Eaton BRNSURGE10 is a two-pole 10kA BR Series device that occupies breaker spaces inside a BR loadcenter. If you have spare breaker spaces in a compatible BR panel and want branch-level protection, the plug-in style is simpler; if the panel is full, sealed, or outdoors, or you want higher surge capacity and dry-contact monitoring, the external HWB is the one that fits.
10) Is there a simpler surge protective device than the Square D Surgelogic HWB11 for a small residential-style panel?
The Eaton BRNSURGE10 is the lighter-duty option: a BR Series two-pole 10 kA surge protective device that installs in a BR loadcenter. It does not carry the per-phase status LEDs, dry contacts and alarm enable/disable switch that the Surgelogic HWB11 includes, and it is not an externally mounted NEMA 4X unit. Use the BRNSURGE10 where an Eaton BR panel is already in place and a basic 10 kA level of protection meets the spec; step up to the HWB11 where the drawing calls for 100 kA, UL 1449 Ed. 5 listing with remote alarm contacts, or a corrosion-resistant enclosure.
11) I need surge protection for a 120/240V panel with remote alarm monitoring. Which one do I order?
Order the Square D Surgelogic HWB11. It is rated for 120/240V AC 1-phase 3-wire service and ships with dry contacts plus an alarm enable/disable switch for remote monitoring, along with a green status LED per phase for normal operation and a red status LED per phase for fault indication. Connection terminals accept 10 AWG wire and the connection cable is 0.91 m. The Eaton BRNSURGE10 is a BR Series two-pole 10 kA device and does not offer that remote-signaling package, so it does not cover a spec that requires alarm contacts back to a monitoring point.
12) Is the Surgelogic HWB11 mercury free and RoHS relevant for a green building submittal?
Construction is mercury free and the device is in scope for European RoHS with exemption information on file. It falls under WEEE product category 4. The packaging is not made with recycled cardboard and is not single-use-plastic free, so if a project is scoring packaging criteria, that part will not help the submittal.
13) What is the exact part number and where is the Surgelogic HWB made?
The catalog number is HWB11, part of the Square D Surgelogic family, and it is manufactured in Mexico. Use HWB11 when matching a submittal or standardizing spares across a portfolio of 120/240V single-phase panels.
How fast can I get the Square D HWB11 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D HWB11 come with a warranty?
Absolutely. The Square D HWB11 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D HWB11?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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