Eaton B321-2SS4 Beam Clamp - cULus Listed
Part Number: B321-2SS4
Quick Summary
Eaton B-Line series beam clamps securely anchor support beams for clean, adjustable mounting in electrical and mechanical installations. Engineers frequently confront vibration, misalignment, and load drift when attaching equipment to structural beams, but this clamp delivers a robust 1400 lb load rating and a safety factor of 5 to maintain position and performance. These clamps carry cULus Listed certification, reflecting UL safety standards for industrial environments and enhancing procurement confidence in safety and traceability. Designed for standard B-Line strut systems and 1/2”-13 hardware, the B321-2SS4 offers straightforward, repeatable installation and reliable long-term operation, supporting efficient lighting, power distribution, and equipment mounting across facilities.
Product Information
Extended Description
B321-2SS4 Eaton: Eaton B-Line series beam clamps, 1400 lb, Steel, Safety factor of 5, setscrew included, Beam clamp, 1/2"-13 thread/rod size, 1/2”-13 screw size, 1-11/16” beam thickness, Stainless steel type 304
Product Name
Eaton B-Line series beam clamps
Catalog Number
B321-2SS4
UPC
781011862183
Product Length/Depth
3.25 in
Product Height
3.5625 in
Product Width
0.625 in
Product Weight
1.86 lb
Certifications
cULus Listed
Beam thickness
0.313 in
Set screw size
1/2”-13
Special features
Safety factor of 5, setscrew included
Thread/rod size
1/2"-13
Type
Beam clamp
Load capacity
1400 lb
Material
Steel
Beam clamps and accessories section from strut catalog
Beam clamps and accessories section from strut catalog
B-Line engineering services line card
High-capacity load rating and safety factor drive reliability in critical installations. A 1400 lb load capacity paired with a 5:1 safety factor translates to reduced risk of inadvertent disengagement and fewer field adjustments, delivering measurable uptime improvements for lighting and electrical feeders in demanding environments. The impact is tangible: fewer service calls, lower maintenance costs, and greater confidence during retrofit projects where space is constrained and alignment is critical. Setscrew included ensures a secure grip without additional hardware, enabling faster installations and consistent torqueing across multiple clamps in a run, which lowers labor time and project risk while maintaining compliance with standard 1/2"-13 threading. Stainless considerations and steel construction provide robust durability in loomy, vibration-prone spaces, with compatibility across typical Eaton strut channels and accessories. The clamp’s compact profile (3.25 in length, 0.625 in width, 3.5625 in height) aids fitment in tight electrical rooms and above-ceiling installations, helping contractors meet deadlines and avoid rework. Combined with documented catalogs and engineering resources, it supports a streamlined procurement and installation workflow for lighting, power distribution, and mechanical mounting.
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FAQs
To install, align the clamp with the B-Line strut channel, place the clamp over the beam or supported member, insert the 1/2"-13 threaded screw/rod, and tighten the setscrew to secure the clamp in place. The B321-2SS4 ships with a setscrew included, simplifying the mounting process without requiring extra hardware. Verify that the beam thickness is compatible (0.313 in) and confirm the load path aligns with the intended equipment to avoid overloading.
Yes. The specification lists a beam thickness of 0.313 in, which aligns with typical B-Line strut configurations. For best results, ensure the beam and channel are within Eaton’s standard strut system tolerances and that the 1/2"-13 thread/rod configuration is used as intended. If your application is outside this thickness, consult installation guides or contact engineering support for alternative clamp options.
The B321-2SS4 is cULus Listed, indicating compliance with UL safety standards for industrial environments. This certification supports electrical and mechanical mounting applications in harsh or variable conditions and provides assurance regarding material durability, connection integrity, and safety performance under typical loads. While only cULus is listed in the data, this aligns with widely recognized UL safety criteria used in North American facilities.
Typical applications include securing luminaires, sensor housings, cable tray attachments, and emergency lighting fixtures to overhead beams in data centers, manufacturing floors, and utility rooms. The clamp’s 1400 lb capacity supports substantial loads, and the 1/2"-13 threading accommodates standard strut hardware, providing reliable mounting for power distribution, lighting, and mechanical equipment in industrial environments.
The clamp contributes to ROI through rapid, repeatable installation with a secure grip, reducing labor time and misalignment rework. The 5:1 safety factor and UL safety certification lower risk during commissioning and future maintenance, while the 1/2"-13 thread and included setscrew simplify fastening, minimizing field adjustments. Overall, users gain predictable performance, lower maintenance costs, and improved uptime in lighting, electrical distribution, and equipment mounting projects.