Allen-Bradley 800H-NP40J Protective Ring

The Allen-Bradley 800H-NP40J, also cataloged as the 800H-NP40J Protective Ring, operates as a dedicated hardware component for mechanical operator safeguarding and environmental sealing within hazardous location control stations.

Hardware Specifications

Profinet / EtherNet/IP deterministic networks

The mechanical assembly integrates into hazardous location control architectures by providing robust physical enclosure integrity across Class I, II, and III, Division 1 and 2 explosive atmospheres. Structural alignment relies on precision-machined threads and copper-free aluminum casting profiles to isolate internal switching elements from volatile ambient gases and corrosive particulate buildup. Mechanical compatibility is strictly enforced for 2-position non-illuminated push-pull operators, while exclusion rules prevent deployment alongside illuminated variants to maintain thermal and hazardous sealing certifications.

Frequently Asked Questions

Q: Can this protective ring be used with illuminated push-pull operators? A: No. It is strictly engineered for 2-position non-illuminated push-pull operators and cannot be used with illuminated models.

Q: What threaded enclosure hole standard does the mounting interface accommodate? A: The mounting thread is designed to fit a standard 3/4 in.-14 NPSM threaded enclosure hole.

Q: What environmental classifications are certified for this protective ring assembly? A: It features NEMA Type 7 & 9 hazardous location ratings, IP66 / Type 4/4X ingress protection, and compliance for Class I, II, and III, Division 1 and 2 explosive atmospheres.

Field Installation Guidelines

Ensure the mounting enclosure hole is clean, deburred, and threaded to standard 3/4 in.-14 NPSM specifications before insertion. Thread the die-cast copper-free aluminum bushing securely into the enclosure port while maintaining proper alignment with the internal operating shaft. Verify that the synthetic O-ring seal is seated evenly to preserve IP66 and NEMA Type 4/4X ingress protection ratings. Pair the assembly exclusively with compatible 2-position non-illuminated push-pull operators, adhering to reference literature documents 800-TD011 and 800-TD009 for precise component tolerances.