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What Is a Comparator in Electronics?
Understand how a comparator switches at a voltage threshold, why hysteresis prevents chatter, and which output and input specs matter.
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Product Detailed Parameters
- Description：VJB1816 HNGD BWSCRWCVR FRP
- Series：*
- Mfr：Hoffman Enclosures, Inc.
- Package：Bulk
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Overview
The VJB1816HW is a flat cover with a bonded window designed for the Hoffman VJ series of electrical enclosures. Constructed from fiberglass, this component features a light gray finish and provides Type 4X protection against environmental ingress. The unit measures 19.3 inches in height, 17.3 inches in width, and 9.6 inches in depth. It includes hinge hardware and two corner screws for secure attachment to compatible enclosure bases.
Feature Summary
- Fiberglass construction ensures durability and resistance to corrosion.
- Bonded polycarbonate viewing window allows internal monitoring.
- Type 4X rating protects against windblown dust, rain, sleet, snow, and corrosion.
Applications
- Industrial control panels requiring visual inspection access
- Outdoor electrical equipment housing
- Harsh environment machinery control systems
Procurement Notes
Verify that the target enclosure base matches the VJ series dimensions (19.3 x 17.3 x 9.6 inches). Confirm the requirement for Type 4X environmental protection aligns with the fiberglass material properties. Ensure the included hinge and corner screw hardware meets the installation specifications for the specific mounting configuration.
Selection Notes
Select this model when a transparent viewing area is necessary within a rugged, corrosion-resistant enclosure design. The fiberglass composition offers superior strength compared to standard steel alternatives while maintaining a lightweight profile. Consider the bonded window feature for applications where seal integrity is critical for long-term environmental exposure.
Part Context
This part belongs to the Hoffman VJ series, which utilizes a standardized footprint for interchangeable covers and bases. The VJB1816HW serves as the upper closure for the corresponding VJB1816H base. It is manufactured by nVent Hoffman, formerly Hoffman Enclosures, Inc., ensuring compatibility with existing VJ series infrastructure.
Replacement Considerations
Direct substitutes include the VJB1816HWPL2 variant if panel labeling requirements differ. Generic replacements must match the 19.3 x 17.3 inch opening and Type 4X rating. Verify hinge orientation and screw hole patterns before substituting non-OEM components.
