Eaton RSMP1 Conduit Hub Plate - 4-1/2 x 4, NEMA 3
Part Number: RSMP1
Quick Summary
RSMP1 is a conduit hub plate that seals and adapts a 1/2 in hub for Eaton Crouse-Hinds RSM/RSS enclosures. This accessory addresses the frequent challenge of dust infiltration, moisture creep, and loose fittings in enclosure hubs, which can lead to downtime and maintenance costs. The design carries a NEMA 3 rating and NEC/CEC compliance, suitable for ordinary non-hazardous locations, helping maintain enclosure integrity in indoor industrial environments. The feraloy iron alloy construction delivers durability while keeping weight manageable, and the compact 3.5 in depth with a 4-1/2 x 4 in footprint simplifies retrofit and OEM installations. For buyers prioritizing reliability, lifecycle cost reduction, and consistent performance, RSMP1 is a predictable, long-term solution within Eaton’s RSM/RSS ecosystem.
Product Information
Extended Description
RSMP1 Eaton: Eaton Crouse-Hinds series RSM/RSS conduit hub plate, 4-1/2" x 4", Feraloy iron alloy, 1 hub, 1/2" trade size
Product Name
Eaton Crouse-Hinds series RSM/RSS conduit hub plate
Catalog Number
RSMP1
UPC
782274596303
Product Length/Depth
3.5 in
Product Height
3.5 in
Product Width
1 in
Product Weight
0.98 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
NEMA Rating
3
Enclosure size
4-1/2" x 4"
Number of hubs
1
Trade size
1/2"
Material
Feraloy iron alloy
Crouse-Hinds series RS, RSM and RSS Junction Boxes catalog page
RS, RSM and RSS Junction Boxes UL certification
RS, RSM and RSS Junction Boxes UL certification
Eaton Specification Sheet - RSMP1
RSMP1 uses a feraloy iron alloy housing and a compact 3.5 in depth to deliver rugged durability in demanding plant environments. This material choice resists wear and corrosion, extending service life and reducing maintenance intervals. It fits standard 4-1/2 x 4 in enclosures and supports a 1/2 in trade-size hub, making retrofit straightforward for existing RSM/RSS installations. With a single hub, the plate simplifies conduit routing while minimizing the number of parts, speeding installation and reducing inventory needs. Its 1/2 in trade size aligns with common conduit runs, easing compatibility with field assemblies and OEM builds. The NEMA 3 rating and NEC/CEC compliance provide regulatory certainty and protection for ordinary indoor locations, enabling compliant upgrades across North American facilities. At 0.98 lb, RSMP1 is easy to handle during installation or maintenance, improving field productivity and reducing ergonomic strain. Finally, as part of the Eaton Crouse-Hinds family, it guarantees predictable compatibility with RSM/RSS boxes, supporting rapid retrofits and reliable long-term operation.
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FAQs
RSMP1 is designed for straightforward installation; place the plate over the 1/2 in hub, align with the box mounting holes, secure with the included hardware, and ensure a clean seal to minimize ingress paths.
RSMP1 features a 4-1/2 x 4 in footprint, 1 hub, 1/2 in trade size, feraloy iron alloy, weight 0.98 lb, and NEMA rating 3, making it compatible with Eaton RSM/RSS series enclosures.
RSMP1 is designated for Ordinary/Non-Hazardous Locations with a NEMA 3 rating, so it is not intended for hazardous or outdoor exposure without additional protective measures.
RSMP1 aligns with NEC/CEC standards and NEMA 3 rating; related RS/RSM/RSS catalog items are UL certified, providing added assurance for compliance in North American facilities.
Using RSMP1 reduces ingress risk, simplifies installation, and supports quick OEM retrofits, yielding lower maintenance costs and improved enclosure reliability over the product lifecycle.