The Protectowire SR-502 is a sealed strain relief connector, also called a cable gland. Specifically, it secures Protectowire linear heat detector cable where it enters a junction box. Moreover, it seals that entry against dirt and moisture. As a result, the detector stays protected at every box.
Protectowire SR-502 specifications
First, the body is iron with a zinc-plated finish and a PVC grommet. In addition, it carries a watertight and oiltight rating. It accepts cable jacket diameters from 0.10 to 0.20 inches. Also, the dome fitting and locking nut use 1/2-inch NPT threads. The connector is rated to 194°F (90°C).
Listings and installation
The SR-502 is UL Listed for NEMA 4 and NEMA 6 service. However, that rating applies in an NPT threaded entry or UL Listed conduit hub. Then torque the connector 1.5 to 3 turns past finger tight. Therefore, avoid over-tightening during installation.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.07 lbs |
|---|---|
| Dimensions | 1.5 × 1 × 1 in |
| Condition | New |
| Manufacturers | Life Safety |
| Part Type | Replacement Part |






