Description
Applications
- Locks a luminaire conduit stem into a conduit hub to prevent loosening due to relamping torque or vibration.
- Supports pendant-type luminaires in hazardous and non-hazardous locations.
- Ideal for mounting luminaires to standard cast outlet boxes that lack set screws in the hub.
Key Features
- Prevents luminaire movement by securing the conduit stem.
- Dual set screws tighten on both the hub and luminaire stem for maximum stability.
- Durable feraloy® iron alloy construction for corrosion resistance and long-lasting performance.
- Electrogalvanized and aluminum acrylic paint finish for enhanced durability.
- Compatible with conduit hubs from 1/2” to 1” and luminaire stems from 1/2” to 3/4”.
Certifications & Compliance
- Explosionproof & Dust-ignitionproof.
- Class I, Divisions 1 & 2, Groups C, D.
- Class II, Divisions 1 & 2, Groups E, F, G.
- Class III.
- UL Standard: UL1203.
Ordering Information
| Hub Size | Stem Size | Catalog # |
|---|---|---|
| 1/2” | 1/2” | COUP101 |
| 3/4” | 1/2” | COUP201 |
| 3/4” | 3/4” | COUP202 |
| 1” | 3/4” | COUP302 |
Additional Adjustable Luminaire Hanger – UNR Series
| Hub Size | Angle Adjustment | Catalog # |
|---|---|---|
| 3/4” | 0° to 90° | UNR29 |
Conclusion
The Crouse-Hinds COUP Locking Couplings provide reliable, NEC-compliant luminaire support, preventing loosening from vibration or relamping torque. Their corrosion-resistant construction, UL listing, and robust design make them ideal for hazardous and industrial lighting applications.

