Get these circuit lock fused disconnect switches from Hubbell, made in the USA.
Application:

These Fused disconnect switch suited for industrial grade applications with typical harsh environments. Can withstand exposure to water, chemicals oils and wash downs of industrial use.
Hubbell's fusible switches are well suited for automation & process control in a range of heavy duty operations especially those requiring back up generators, compactors, loading doc equipment and large HVAC units.

High Quality Performance Fuses and Switches:

The electrical operation has dialectric voltage that withstands 3000V AC minimum
This fused switch can operate continuously, without impact between a maximum of 75°C and minimum -40°C.
Fused disconnect switches accepts Class J fuses
Three molded-in conduit fittings are found of the body of the enclosure, 2 on top and 1 at the back.
These fused products are also UL certified ensuring maximum safety and security. Rated and Certified gray

Enclosure securely holds fused switch:

This fusible switch enclosure has ingress protection 66 and Nema Type 4X 12 meaning the enclosure of this fused disconnect switch is watertight, dust-tight and Non-metallic.
The mechanical nature of the fused disconnect switch is impact resistant, UV resistant.
The door panel of this fused switched enclosure can be removed for ease of wiring during installation and or maintenance checks.
The door can also be locked to prevent unauthorized access and is also designed with another safety feature: if the switch is ON, the door cannot be opened.
This fused disconnect features a lockable highly visible red switch handle to comply with the OSHA Lockout/Tagout standards
The enclosure of the fused disconnect features 4 adjustable mounting feet. The feet adjust to any 1 of 3 positions for suitable mounting.
The Product Materials of this fusible switch are made from a composite of materials, listed: Enclosure material: PBT Frame & Ground Plate: Galvanized Steel Enclosure Gasket: Neoprene Enclosure screws: Stainless Steel Conduit Hub: Zinc, 1 in. Available in 30 Ampere or 60 Ampere.

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Disconnect Switch

Circuit Lock Fused Disconnect Switches