Keystone Metalcraft

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Polyster Enclosure

The Polyester Enclosure is designed for harsh, corrosive, and humid environments. Constructed from durable materials like fiberglass (SMC) and PU waterproof rings, it offers excellent protection with an IP66 rating and IK09 impact resistance. It features a wide temperature range of -40ºC to +120ºC, ensuring reliability in extreme conditions. Suitable for use in terminal boxes, power distribution, control boxes, and more.
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Open gray industrial electrical enclosure cabinet with hinged door and empty interior
Wall-mounted gray metal electrical enclosure cabinet with dual locking latches on white background.

Key Features

  • Durable Construction: Made with high-quality materials, including
  • Fiberglass (SMC) for the enclosure and cover, PU waterproof ring, Zinc alloy hinges, and a PA66 lock for robust performance.
  • Superior Protection: Offers IP66 protection (dust-tight and resistant to powerful water jets) and is rated for IK09 mechanical impact resistance, making it ideal for harsh environments.
  • Wide Temperature Range: Withstanding temperatures from -40ºC to +120ºC (short time) and -40ºC to +100ºC (continuous), ensuring reliability in extreme weather conditions.
  • Versatile Applications: Perfect for use as a terminal box, measuring box, power distribution box, control box, and more, particularly in corrosive and humid environments.
  • CE and RoHS Approvals: Meets international quality standards for safety and environmental compliance.
  • Optional Accessories: Includes optional items like Polyester mounting plates and Key locks for enhanced functionality.
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Product Specifications

Polyester Enclosure Specifications
Material (Enclosure & Cover) Fiberglass (SMC)
Waterproof Ring PU
Hinge Zinc Alloy
Lock PA66
Mounting Plate Galvanized Steel Plate
Wall Mounting Bracket ABS
Color Gray
Protection Category (IP Rating) IP66
Mechanical Impact Resistance IK09
Approvals CE, RoHS
Applications Terminal Box, Measuring Box, Power Distribution Box, Control Box, Socket Box, etc.
Ambient Temperature Range (Short Time) -40ºC ~ +120ºC
Ambient Temperature Range (Continuous) -40ºC ~ +100ºC
Standard Products Include Box Bottom, Box Cover, Universal Key, Plastic Wall Mounting Bracket, Galvanized Mounting Plate
Optional Accessories Polyester Mounting Plate, Key Lock
Size List 250*300*140, 300*400*200, 400*400*200, 400*500*200, 400*600*230, 500*600*230, 600*800*300

Product Applications

Silhouetted high-voltage transmission towers and power lines against a colorful sunset sky

Electrical & Power Distribution Systems

Circular stadium construction site with tower cranes and unfinished ring-shaped steel frame

Measuring Box, Terminal Box

White electric sedan plugged into home EV charger in modern driveway

Telecommunication Equipment

Electrician in safety gear servicing an open electrical panel and wiring connections

Power Distribution Box

Electrician servicing industrial electrical control panel with organized wiring and circuit breakers.

Battery Storage System

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