Leviton 277V Replacement Surge...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10.63
Leviton 277V Replacement Surge Protection Module

Leviton 277V Replacement Surge Protection Module

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Model: 277-7M3

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

$10.63
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Leviton 277V Surge Replacement Module

The Leviton is a 277 VAC Surge Replacement Module engineered to restore surge protection performance in compatible Leviton surge panels without requiring full panel replacement. This Device Type: Surge component is designed for use with the following surge panels: 52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, and 52277-7CS, giving facility electricians and maintenance teams a straightforward path to keep existing surge protection infrastructure running at full capacity. By swapping in a genuine Leviton replacement module rather than an entire panel, electrical contractors can minimize downtime, reduce replacement costs, and maintain the surge suppression integrity that commercial and industrial electrical systems depend on.

Key Features

  • Panel Compatibility: Designed for use with Leviton surge panels 52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, and 52277-7CS, allowing targeted module-level replacement instead of full panel swap-out.
  • Electrical Rating: Rated for 277 VAC systems, matching the voltage class of the compatible surge suppression panels it services.
  • Device Type: Classified as a Surge module, purpose-built to restore transient voltage surge suppression (TVSS) function in existing panel enclosures.
  • Available Options: Also referenced under model numbers 277-7M3, 8320-GN, and 7120 for cross-compatibility identification when ordering replacement stock.
  • Drop-In Replacement Design: Sized and configured as a direct replacement module, helping reduce labor time compared to full surge panel changeout.
  • Maintenance-Focused Construction: Built to Leviton's surge protection standards, supporting consistent performance across the compatible panel lineup.

Technical Specifications

  • Device Type: Surge
  • Voltage: 277 VAC
  • Compatible Panels: 52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, 52277-7CS
  • Cross-Reference Models: 277-7M3, 8320-GN, 7120
  • list_batch: 377-VARMACHINE-20260803

Typical Applications

  • Replacement and Maintenance of Existing Leviton Surge Protection Panels
  • Commercial and Industrial Electrical Installations
  • Panelboard and Surge Suppression System Servicing
  • Facility Electrical Maintenance Programs
  • Renovation Projects Involving Legacy 277V Surge Panels
  • Preventive Replacement of Aging Surge Suppression Components

Why Leviton?

Leviton has long been a trusted source for electrical distribution and protection components used by professional electricians across commercial and industrial projects. This 277V Surge Replacement Module reflects that same commitment, offering a purpose-built component engineered specifically for compatibility with Leviton's own surge panel lineup. Choosing a genuine Leviton replacement module helps ensure the surge suppression performance of the original panel is preserved, supporting reliable, code-compliant electrical systems for years to come.

Manufacturer Resources

Product Specs

Device Type:
Surge
Product Type:
Surge Replacement Module
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Shop All Leviton

Leviton 277-7M3 – Frequently Asked Questions

1) Can I replace just the surge module instead of the whole Leviton surge panel?
That is exactly what this part is for. The 277V module restores transient voltage surge suppression in the panel you already have, so a facility electrician pulls the spent module and installs the new one rather than demoing and re-terminating a full panel. Labor drops to a module swap and the existing enclosure and wiring stay in place.
2) My panel is 208Y/120V, not 277V. Will this Leviton module work?
No. This module is rated for 277 VAC systems and matches the voltage class of the 52277 series panels it services. A 120/208V panel needs a module of its own voltage class. On a 480/277V wye system, 277V is the line-to-neutral voltage, which is why these panels show up on commercial lighting and mechanical distribution.
3) Do I need a genuine Leviton module or can I use a generic surge cartridge in a 52277 panel?
Use the Leviton part. The 277V module is configured specifically for the 52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, and 52277-7CS panels, which means it is sized and connected for those enclosures. A generic cartridge has no stated fit to that panel line, so you would be guessing at both the mechanical fit and the suppression rating the panel was originally built around.
4) We have legacy 277V Leviton surge panels in a building we are renovating. Is this module still available for them?
Yes, the 277 VAC replacement module still covers that older 52277 panel family, including the 52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, and 52277-7CS. On a renovation you can keep serviceable panels in place and bring the surge suppression back to full function with a module, which is usually a far smaller scope item than tearing out and re-feeding a panelboard.
5) Should I replace a Leviton surge module preventively or wait until the indicator shows a fault?
Either approach works with a module-level part like this one, and that is the point of it. Because the 277V module comes out of the panel independently, facilities running a preventive maintenance program can rotate aging suppression components on a schedule, and a crew responding to a failed module can restore protection the same visit without scheduling a panel changeout and an extended outage.
6) How many Leviton 277V surge modules should I stock for a facility with several 52277 panels?
Stock by panel count, not by building. Each 52277 series panel takes its own module, and one part number covers the whole compatible range (52277-M3, 52277-CM3, 52277-7M3, 52277-7MS, 52277-7C3, and 52277-7CS), so a single line item on your MRO shelf serves every 277V Leviton surge panel on site. Order under 277-7M3, 7120, or 8320-GN, whichever number your system already recognizes.
How fast can I get the Leviton 277-7M3 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 Leviton 277-7M3 come with a warranty?
Absolutely. The Leviton 277-7M3 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 Leviton 277-7M3?
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
Why buy the Leviton 277-7M3 from ZenSupply?
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