ENF & EF Industrial & Commercial Fused and Non-Fused Disconnects
Spike Electric Controls provides ENF & EF enclosed disconnect solutions for industrial and commercial electrical applications.
Available in multiple NEMA enclosure configurations, ENF & EF disconnects provide a dependable means of opening and closing an electrical circuit while allowing the enclosure to be selected for the installation environment.
From general-purpose indoor applications to outdoor, wet, dusty and demanding industrial environments, Spike Electric offers enclosure options designed to meet a variety of application requirements.
Enclosed Disconnect Solutions for Industrial & Commercial Applications
ENF & EF enclosed disconnects are available for applications requiring reliable circuit isolation within a protected enclosure.
Available enclosure configurations include:
-
- NEMA 1 General Purpose
- NEMA 3R Rainproof
- NEMA 4/4X
- NEMA 5
- NEMA 12
- Non-Metallic NEMA 4X
Different enclosure options allow the equipment to be selected based on indoor or outdoor installation requirements and exposure to water, dust, oil, coolant and other environmental conditions.
- NEMA 1 General-Purpose Enclosed Disconnects
- NEMA 3R Rainproof Enclosed Disconnects
- NEMA 4/4X & NEMA 5 Water- and Dustproof Enclosures
- NEMA 12 Dustproof Enclosed Disconnects
- Non-Metallic NEMA 4X Enclosures
Surface or Flush Mounting
NEMA 1 configurations are designed for protected indoor applications where a general-purpose enclosure is appropriate.
Typical applications include:
- Commercial buildings
- Apartment buildings
- Indoor electrical rooms
- General-purpose industrial facilities
- Other protected indoor installations
NEMA 1 configurations are identified from 15-1200A, with ratings up to 600 Vac and 500 Vdc.
The equipment is front operable and can be padlocked in the OFF position.
Both surface-mounted and flush-mounted enclosure options are available.
Surface Mounting
NEMA 3R configurations are designed for outdoor applications requiring protection from rain and weather.
These configurations use a weatherproof sheet-steel enclosure and are suitable for applications requiring a main disconnect or protective device for feeder circuits.
Features:
- Rainproof outdoor construction
- Surface mounting
- Interchangeable hubs through 400A
- Front-operable design
- Padlockable OFF position
- Configurations identified from 15-3000A
- Ratings up to 600 Vac and 500 Vdc
NEMA 3R enclosed disconnects provide a practical solution for industrial and commercial electrical installations located outdoors.
Type 304 Stainless Steel | Surface Mounting
For demanding environments involving exposure to water and dust, Spike Electric offers Type 304 stainless-steel enclosure configurations designed to meet NEMA 4/4X and NEMA 5 requirements.
These enclosures are manufactured without knockouts or other openings and are particularly well suited for process-industry applications.
Typical environments include:
- Dairies
- Breweries
- Paper mills
- Mining operations
- Process plants
- Wet industrial environments
- Dust-prone facilities
The operating handle can be padlocked in the OFF position and is interlocked to help prevent the enclosure door from being opened while the equipment is in the ON position.
Configurations are identified from 15-3000A, with ratings up to 600 Vac and 500 Vdc.
Surface Mounting
NEMA 12 configurations are designed for industrial environments where unusually severe operating conditions may involve:
- Oil
- Coolant
- Dust
- Dirt
- Other foreign materials
The standard enclosure is designed without knockouts or other openings.
The operating handle can be padlocked in the OFF position, and the cover is interlocked with the handle mechanism to help prevent access while the equipment is in the ON position.
NEMA 12 configurations are identified from 15-3000A, with ratings up to 600 Vac and 500 Vdc.
A semi-dust-tight NEMA 12 design with knockouts is also available. Contact Spike Electric Controls for applicable ratings and configuration details.
Spike Electric also offers non-metallic NEMA 4X enclosure options constructed from fiberglass-reinforced polyester material.
This construction provides high impact strength along with corrosion resistance and stability in demanding operating environments.
Features & Benefits
- High-impact-strength fiberglass-reinforced polyester material
- Excellent corrosion resistance
- Durable unitized enclosure construction
- Stability to heat
- Hinged access door opening approximately 160 degrees
- Improved access for wiring and maintenance
- Padlockable access door
- Padlockable OFF position
- Three-point latching system on flange-style configurations
- Interlocked handles on applicable NEMA 3R, 4/4X, 5 and 12 enclosures
- Interchangeable hubs
- Numerous factory options
Need Help Selecting an ENF or EF Enclosed Disconnect?
Selecting the right disconnect requires consideration of electrical ratings, enclosure type, mounting requirements and the operating environment.
Spike Electric Controls can help identify an ENF or EF configuration for your industrial or commercial application.
Designed for a Range of Operating Environments
Choosing the correct enclosure depends on where the equipment will be installed and the environmental conditions it may encounter.
- NEMA 1
Best suited for protected indoor general-purpose installations. - NEMA 3R
Designed for outdoor applications requiring protection from rain and weather. - NEMA 4/4X & NEMA 5
Designed for applications requiring protection from water and dust, including demanding process-industry environments. - NEMA 12
Designed for industrial applications involving oil, coolant, dust and other foreign materials. - Non-Metallic NEMA 4X
Provides a corrosion-resistant fiberglass-reinforced polyester enclosure option for applications where non-metallic construction is preferred.
ENF & EF Features and Benefits
Depending on the enclosure selected, ENF & EF configurations can include:
- Padlockable OFF position
- Padlockable access doors
- Interlocked operating handles
- Three-point latching systems
- Hinged access doors
- Interchangeable hubs
- Surface-mounting options
- Flush-mounting options
- Stainless-steel construction
- Non-metallic enclosure options
- Numerous factory options
These options provide flexibility when selecting equipment for specific electrical and environmental requirements.
Industrial & Commercial Applications
ENF & EF enclosed disconnects can support applications across a variety of industries and facilities, including:
- Manufacturing facilities
- Commercial buildings
- Apartment buildings
- Industrial plants
- Food and beverage facilities
- Dairies
- Breweries
- Paper mills
- Mining operations
- Process-industry facilities
- Outdoor electrical
- installations
- Wet environments
- Dust-prone facilities
- Locations exposed to oil or coolant
- Corrosive operating environments
Selecting the Right Enclosed Disconnect
When selecting an ENF or EF enclosed disconnect, consider:
- Required amperage
- System voltage
- Indoor or outdoor installation
- NEMA enclosure type
- Environmental exposure
- Surface or flush mounting requirements
- Corrosion resistance requirements
Padlocking requirements
Factory options required for the application
Spike Electric Controls can help evaluate your project requirements and identify an enclosure configuration suited to the application.
Catalog Numbers & Mounting Plates
Spike Electric offers multiple enclosure and mounting-plate configurations to support different installation requirements.
Retain the existing Catalog Numbers and Mounting Plates table directly below this section.
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Frequently Asked Questions
What is an enclosed disconnect?
An enclosed disconnect is an electrical device installed within a protective enclosure that provides a means of opening and closing an electrical circuit.
What NEMA enclosure options are available?
The ENF & EF product line includes NEMA 1, NEMA 3R, NEMA 4/4X, NEMA 5 and NEMA 12 enclosure configurations, along with a non-metallic NEMA 4X option
Are outdoor disconnect configurations available?
Yes. NEMA 3R configurations are designed for outdoor applications requiring protection from rain and weather.
What is the difference between NEMA 1 and NEMA 3R?
NEMA 1 configurations are intended for protected indoor applications. NEMA 3R configurations are intended for outdoor installations requiring protection from rain and weather.
When should a NEMA 4X enclosure be considered?
NEMA 4X configurations can be considered for demanding applications involving exposure to water, dust or corrosive operating conditions.
What is a NEMA 12 disconnect enclosure used for?
NEMA 12 configurations are intended for industrial environments where oil, coolant, dust and other foreign materials may be present.
Are non-metallic NEMA 4X options available?
Yes. Spike Electric's product information includes a non-metallic NEMA 4X enclosure constructed from fiberglass-reinforced polyester material for impact strength and corrosion resistance.
Can the equipment be padlocked?
Yes. The product configurations described by Spike Electric include provisions for padlocking the operating mechanism in the OFF position. Certain configurations also feature padlockable access doors.
What amperage ratings are available?
Available ratings vary by enclosure configuration. NEMA 1 is identified from 15-1200A, while several other enclosure configurations are identified up to 3000A. Contact Spike Electric Controls to confirm the appropriate rating for your application.