Eaton OS310U-BK Occupancy Sensor Switch - NOM cULus Listed
Part Number: OS310U-BK
Quick Summary
Eaton occupancy sensor switch quickly automates lighting in spaces up to 1000 sq ft, delivering reliable 120 V occupancy control. This approach minimizes energy waste and eliminates manual switching in corridors, offices, and classrooms. Certifications include NOM and cULus Listed, supporting safety compliance and regional electrical codes. The OS310U-BK offers a nightlight feature, a flush-mount form factor, and wire-leads for straightforward installation. For retrofit or new-construction projects, it provides robust load handling and low-maintenance performance, delivering measurable energy savings and simplified asset management.
Product Information
Extended Description
OS310U-BK Eaton: Eaton occupancy sensor switch, Motion sensor with nightlight, Flush, 120V, Wire leads, Maintained closure, Black, Incand, MLV, ELV, Flrsnt, CFL, LED, halo, 1-pole, 3-way, 1-phase, 1000 sq ft, Occupancy, 1000W 710834
Product Name
Eaton occupancy sensor switch
Catalog Number
OS310U-BK
UPC
032664710834
Product Length/Depth
3.31 in
Product Height
5.44 in
Product Width
2.88 in
Product Weight
51.796 lb
Certifications
NOM cULus Listed
Special features
Motion sensor with nightlight
Type
Occupancy sensor switch
Voltage rating
120 V
Number Of Poles
Single-pole
Phase
Single-phase
Power consumption
1000 W
Wiring method
Wire leads
Sensor type
Occupancy
Mounting method
Flush
Closure type
Maintained
Load type
ELV MLV FLR HAL LED INC CFL
Number of ways
Three-way
Range
1000 sq ft
Color
Black
Feature → Business Impact → Application. The OS310U-BK is rated for 120 V and up to 1000 W, enabling control of a wide range of lighting loads from incandescent to LED. This capacity reduces the risk of overloading and provides a single switch for mixed lighting in open office areas, hallways, and classrooms, driving energy efficiency and simplified project scope. Feature → Business Impact → Application. It supports a broad load palette including ELV, MLV, FLR, HAL, LED, INC, CFL, ensuring compatibility with modern lighting installations. This protects fixture longevity and minimizes retrofits, making it ideal for commercial renovations and new-builds seeking dependable electrical performance. Feature → Business Impact → Application. The built-in motion sensor with nightlight improves user safety and visibility during nighttime navigation. In corridors or restrooms, that subtle illumination reduces trips and falls while maintaining energy discipline. Feature → Business Impact → Application. With 1-pole and 3-way configurations, this sensor accommodates multi-location control, enabling consistent behavior across stairs, entryways, and large offices without additional controllers. Feature → Business Impact → Application. Flush mounting and wire-leads streamline installation, reducing wall depth and field wiring time. Retrofit projects and new installations benefit from quicker commissioning, lower labor costs, and predictable performance across a wide range of commercial environments. Feature → Business Impact → Application. Certifications NOM and cULus Listed reinforce safety compliance and code readiness for regional installations, supporting procurement and facilities teams in regulatory alignment and risk reduction.
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FAQs
The OS310U-BK is designed for 120 V circuits with wire leads and supports single-pole and three-way configurations. For installation, connect the line and load wires as specified in the Eaton datasheet, then mount flush to the wall. The nightlight feature operates independently from the main load, and the device coordinates multi-location control without requiring additional modules. Always verify circuit rating and load types to prevent overloading and ensure code-compliant wiring.
OS310U-BK supports ELV, MLV, FLR, HAL, LED, INC, and CFL loads, delivering broad compatibility for modern lighting systems. This flexibility reduces the need for multiple devices during retrofits and ensures safe operation across mixed fixtures. By accommodating diverse loads, the sensor helps maintain lighting performance while protecting fixtures from incompatible switching.
Yes. The OS310U-BK is well suited for commercial retrofits and new construction where energy efficiency and reliable occupancy sensing are priorities. Ideal applications include offices, hallways, classrooms, and retail spaces up to 1000 sq ft per sensor. Its flush-mount design, nightlight, and 1-pole/3-way capability simplify installation across multi-room layouts while improving user experience.
The OS310U-BK carries NOM and cULus Listed certifications, indicating compliance with regional electrical safety standards and reliable performance in real-world installations. These certifications help procurement meet regulatory requirements, support warranty eligibility, and reduce risk during audits and inspections in commercial environments.
Expect energy savings from occupancy-based control, reduced manual switching, and lower maintenance needs due to fewer electrical wear points on lights and switches. The device’s compatibility with common load types and straightforward installation also shortens commissioning time, delivering faster project payback and improved long-term asset management in office, education, or retail facilities.