Eaton PB4B Push Button Enclosures - NEMA 12, Surface Mount
Part Number: PB4B
Quick Summary
Eaton PB4B push button enclosures are designed to protect control stations in demanding industrial settings. Operators often wrestle with dusty, oily panels and degraded seals that drive downtime; PB4B helps mitigate this with robust construction and reliable sealing. UL 508A and CSA C22.2 certifications, paired with a NEMA 12 rating, provide strong compliance and environmental protection for automation panels. The combination of surface mounting, a hinged cover, and removable features delivers business value by reducing maintenance time, improving panel longevity, and enabling faster changeouts. This makes PB4B a practical choice for machine builders and panel shops seeking durable, cost-effective control enclosure solutions.
Product Information
Extended Description
PB4B Eaton: Eaton B-Line series push button enclosures, 6.62" height, 3.5" length, 5" width, NEMA 12, Hinged cover, PBB enclosure, Surface mounted, Small single door, External mounting feet, Carbon steel, Oil-resistant gasket
Product Name
Eaton B-Line series push button enclosures
Catalog Number
PB4B
UPC
782051700848
Product Length/Depth
3.5 in
Product Height
6.62 in
Product Width
5 in
Product Weight
4.2 lb
Certifications
UL 508A CSA C22.2. NEMA
Material
Carbon steel
Wall thickness
14 gauge
Finish color
Painted
Color
ANSI 61 gray
Style
Small single door
Model
PBB enclosure
Cover type
Hinged
Mounting method
Surface
Mounting hole details
External mounting feet
Closure type
Hinged
Special features
Removable cover, recessed pull ring, plated screws
NEMA Rating
12
Country of origin
US
The PB4B enclosure uses carbon steel with a 14 gauge wall, delivering a rugged foundation that resists impact and long-term wear in demanding environments. This translates to lower maintenance costs and fewer panel replacements over time, especially in assembly lines and service bays where downtime is costly. Its NEMA 12 rating provides dust and oil resistance, enabling reliable operation in workshops and industrial spaces where contaminants are common. The surface mounting method with external feet simplifies installation on existing frames, reducing field labor and enabling faster project loadouts. A hinged cover with a removable feature and recessed pull ring supports quick access for routine servicing, while plated screws resist corrosion and maintain enclosure integrity. The ANSI 61 gray painted finish protects against corrosion and blends with typical control-panel aesthetics, supporting consistent maintenance practices and easy future upgrades. Compatibility with PBB enclosure families and standard push-button operators ensures a smooth integration path for control systems.
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FAQs
PB4B is designed for surface mounting with external mounting feet, providing a straightforward install onto standard panels or equipment frames. The hinged cover allows quick access without needing to remove the enclosure, reducing commissioning time and enabling rapid operator training. This makes PB4B ideal for machine builds and retrofit projects where space is limited.
PB4B measures 6.62 inches in height, 5 inches in width, and 3.5 inches in depth, with a weight of 4.2 pounds. It is constructed from 14 gauge carbon steel and finished in ANSI 61 gray paint. These compact, sturdy dimensions suit control panels where space is at a premium while providing robust protection.
PB4B carries UL 508A and CSA C22.2 certifications and has a NEMA 12 rating, which confirms dust and oil protection for industrial environments. This combination supports safe integration into electrical panels and aligns with typical requirements for commercial and light-industrial control systems.
Yes. The PB4B is a small single-door PBB enclosure with a hinged cover designed for surface mounting and external feet, which accommodates standard push-button operator assemblies. Its removable cover and recessed pull ring streamline maintenance, while plated screws help ensure long-term durability in busy production environments.
Datasheets and specifications for PB4B are available on Eaton’s site. Use the Pushbutton-enclosure-operator.pdf for operator mounting details and the Eaton Specification Sheet - PB4B for complete technical data, including dimensions, materials, and compliance notes.