Features
- Exterior PVC coating thickness is a minimum 0.040″
- Interior Urethane coating thickness is a minimum 0.002″
- STTB available in 10 trade sizes from 1/2″ to 4″
- Sealing sleeves on conduit side of hub
- Molded PVC gasket seals flush with enclosure wall
- Neoprene O-ring gasket provides additional seal
- The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes 1/2″- 2″
- For sizes 2-1/2″-4″, the length of the sleeve extension(s) shall be at least 2″
Applications
Calbond PVC STTB Style Hubs are used to terminate conduit runs through the wall of a sheet metal electrical enclosure. They are available with or without grounding lug. STTB style hubs are ‘Through-Bulkhead’ fittings used to pass conduit runs through firewalls or bulkheads up to 1/8″ thick.
Standards
- UL 514B
- NEC/CEC:
- Class I, Division 2,
- Class II, Division 1 & 2
- Class III, Division 1 & 2
- Class I, Zone 1, AEx e II
- Class I, Zone 1, Ex e II
- All Screw-tight Hubs are manufactured in accordance with NEMA type enclosures 2, 3, 3R, 4, 4x, 11 & 12
PVC Coated STTB Conduit Hubs
| Item Number | Trade Size (in) | A | B | C | Max Wall Thickness | Weight Per 100 (lbs) |
|---|---|---|---|---|---|---|
| Steel | ||||||
| PV0700STTB2 | 3/4 | 2.22 | 2.25 | 4.44 | 0.19 | 50 |
| PV0500STTB1 | 1/2 | 1.84 | 2.00 | 3.68 | 0.19 | 50 |
| PV1000STTB3 | 1 | 2.66 | 2.50 | 5.32 | 0.25 | 70 |
| PV1200STTB4 | 1 1/4 | 2.94 | 3.25 | 5.88 | 0.25 | 100 |
| PV1500STTB5 | 1 1/2 | 3.19 | 3.50 | 6.38 | 0.25 | 120 |
| PV2000STTB6 | 2 | 3.75 | 4.25 | 7.50 | 0.25 | 170 |
| PV2500STTB7 | 2 1/2 | 4.22 | 4.75 | 8.44 | 0.25 | 250 |
| PV3000STTB8 | 3 | 4.31 | 5.25 | 8.62 | 0.25 | 300 |
| PV3500STTB9 | 3 1/2 | 4.38 | 5.50 | 8.76 | 0.25 | 420 |
| PV4000STTB10 | 4 | 4.44 | 6.25 | 8.88 | 0.25 | 590 |
| Aluminum | ||||||
| PA0500STTBA1 | 1/2 | 1.84 | 2.00 | 3.68 | 0.19 | Contact Factory |
| PA0700STTBA2 | 3/4 | 2.22 | 2.25 | 4.44 | 0.19 | Contact Factory |
| PA1000STTBA3 | 1 | 2.66 | 2.50 | 5.32 | 0.25 | Contact Factory |
| PA1200STTBA4 | 1 1/4 | 2.94 | 3.25 | 5.88 | 0.25 | Contact Factory |
| PA1500STTBA5 | 1 1/2 | 3.19 | 3.50 | 6.38 | 0.25 | Contact Factory |
| PA2000STTBA6 | 2 | 3.75 | 4.25 | 7.50 | 0.25 | Contact Factory |
| PA2500STTBA7 | 2 1/2 | 4.22 | 4.75 | 8.44 | 0.25 | Contact Factory |
| PA3000STTBA8 | 3 | 4.31 | 5.25 | 8.62 | 0.25 | Contact Factory |
| PA3500STTBA9 | 3 1/2 | 4.38 | 5.50 | 8.76 | 0.25 | Contact Factory |
| PA4000STTBA10 | 4 | 4.44 | 6.25 | 8.88 | 0.25 | Contact Factory |