Eaton STBS16040221 STB Enclosure - IP66, 316L Stainless

Part Number: STBS16040221
Manufacturer
Eaton
Part number
STBS16040221

Quick Summary

The Eaton STBS16040221 STB enclosure is a rugged stainless-steel housing designed for hazardous-location electrical installations. Users often struggle with protecting sensitive control gear from corrosive environments and moisture while meeting strict safety codes. This enclosure carries IECEx/ATEX and NEC/CEC certifications, IP66 ingress protection, and a Class I, Division 2 hazardous-location rating for reliable operation in demanding industries. With a 60" x 40" x 22" footprint and a 316L stainless steel build, it supports large-scale assemblies while reducing maintenance and downtime, delivering long-term value for process automation, power distribution, and safety-critical controls.

Product Information

Extended Description

STBS16040221 Eaton: Eaton Crouse-Hinds series STB enclosure, 400A, 60" x 40" x 22" enclosure size, 456 mm horizontal fixing center, 464 mm vertical fixing center, 316L stainless steel, 1 gland plate, 690 Vac/Vdc
Product Name
Eaton Crouse-Hinds series STB enclosure
Catalog Number
STBS16040221
EAN
3066227675248
Product Length/Depth
400 mm
Product Height
600 mm
Product Width
220 mm
Product Weight
12.97 kg
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC IECEx/ATEX IEC
NEC hazardous rating
Class I, Division 2
NEMA Rating
6 4X
Ingress protection (IP) ratings
IP66
Material
316L stainless steel
Enclosure size
60" x 40" x 22"
Feature: 316L stainless steel construction provides superior corrosion resistance and durability. Business Impact: Extends service life in chemical, offshore, and coastal environments, reducing replacement costs. Application: Ideal for harsh process plants where maintaining clean room standards and asset integrity is essential. Feature: Large footprint enclosure size of 60" x 40" x 22" with precise fixing centers (456 mm horizontal, 464 mm vertical). Business Impact: Facilitates straightforward integration of large control panels and wiring looms, lowering installation time and configuration errors. Application: Suitable for mid- to large-scale automation cabinets in refineries and water treatment facilities. Feature: IP66 and NEMA 6 4X ratings combined with hazardous-location certification (Class I, Division 2). Business Impact: Delivers robust environmental sealing and regulatory compliance, reducing site incident risk. Application: Offshore platforms and chemical plants with stringent safety requirements. Feature: 690 Vac/Vdc electrical rating and one gland plate. Business Impact: Supports versatile power and control wiring while simplifying enclosure sealing and maintenance. Application: Mixed-voltage control systems and multi-drive installations. Feature: Certifications IECEx/ATEX and NEC/CEC alignment. Business Impact: Ensures compliance across global projects, streamlining procurement and approvals. Application: International projects with stringent regulatory requirements. Feature: Included gland plate and compact weight of 12.97 kg enhances installation practicality. Business Impact: Reduces mounting time and handling risks during retrofit or upgrade projects. Application: retrofit of existing control architectures in hazardous zones.

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FAQs

The STBS16040221 integrates 316L stainless steel construction with IP66 sealing and a NEMA 6 4X rating, paired with NEC Class I, Division 2 certification. This combination supports safe operation in hazardous locations by protecting internal components from dust, water ingress, and hazardous atmospheres while complying with regulatory mandates for electrical installations.
The enclosure measures 60" x 40" x 22", or 400 mm length, 600 mm height, and 220 mm width. It features 456 mm horizontal and 464 mm vertical fixing centers, enabling precise mounting of large control assemblies and simplifying alignment with existing frames or cabinets.
Yes. With 316L stainless steel, IP66/IP66-rated sealing, NEMA 6 4X protection, and hazardous-location certifications (IECEx/ATEX, NEC/CEC), the enclosure is designed for aggressive, demanding environments found in offshore platforms and chemical processing facilities, delivering durable protection and regulatory compliance.
The enclosure supports up to 690 Vac/Vdc, accommodating mixed-voltage control systems. It includes one gland plate for simplified cabling and wiring management, enabling clean, code-compliant installations and faster commissioning in hazardous zones.
Official materials include the Crouse-Hinds Stainless Steel Enclosures Solutions brochure and the STB Enclosures catalog page. These resources provide installation guidance, dimensional data, and wiring considerations, helping specify the right configuration for your hazardous-location project.