B-40 Dimensions in Inches (mm)www.hubbell-wiring.com
ADD-A-SHROUD™ Devices Twist-Lock® Devices
HBLSS3
1.57"
(39.9)
2.04"
(51.8)
HBLSS45
1.65"
(41.9)
2.21"
(56.1)
Twist-Lock® Devices
Safety-Shroud® Twist-Lock® Devices
ADD-A-SHROUD™: The Innovation That Lets You Convert Existing Insulgrip®
Twist-Lock® Plugs to Safety-Shroud Twist-Lock Devices
The Add-A-Shroud devices allow conversion of existing 20A and 30A
3 to 5 wire Hubbell Insulgrip® Twist-Lock devices to a Safety-Shroud Twist-
Lock plug. These devices provide a convenient and cost-effective way to
convert existing Hubbell Insulgrip Twist-Lock plugs to Safety-Shroud Twist-
Lock plugs. The Safety-Shroud Twist-Lock plug permits engagement with
the Hubbell Mechanical Interlock Enclosure which virtually prevents make
and break under load.
Safety-Shroud Twist-Lock – 20 and 30 Ampere
Add-A-Shroud Catalog Number HBLSS3
For conversion of all 3 wire Hubbell Insulgrip Twist-Lock Devices.
Voltage NEMA Hubbell Catalog Numbers
Rating Number Plug Add-A-Shroud
20A, 2 Pole 3 Wire Grounding 125V L5-20 HBL2311 HBLSS3
250V L6-20 HBL2321 HBLSS3
277V AC L7-20 HBL2331 HBLSS3
480V AC L8-20 HBL2341 HBLSS3
600V AC L9-20 HBL2351 HBLSS3
30A, 2 Pole 3 Wire Grounding 125V L5-30 HBL2611 HBLSS3
250V L6-30 HBL2621 HBLSS3
277V AC L7-30 HBL2631 HBLSS3
480V AC L8-30 HBL2641 HBLSS3
600V AC L9-30 HBL2651 HBLSS3
Add-A-Shroud Catalog Number HBLSS45
For conversion of all 4 and 5 wire Hubbell Insulgrip Twist-Lock Devices.
Voltage NEMA Hubbell Catalog Numbers
Rating Number Plug Add-A-Shroud
20A, 3 Pole 4 Wire Grounding 125/250V L14-20 HBL2411 HBLSS45
3Ø250V AC L15-20 HBL2421 HBLSS45
3Ø480V AC L16-20 HBL2431 HBLSS45
30A, 3 Pole 4 Wire Grounding 125/250V L14-30 HBL2711 HBLSS45
3Ø250V AC L15-30 HBL2721 HBLSS45
3Ø480V AC L16-30 HBL2731 HBLSS45
3Ø600V AC L17-30 HBL2741 HBLSS45
20A, 4 Pole 5 Wire Grounding 3ØY 120/ L21-20 HBL2511 HBLSS45
208V AC
3ØY 277/ L22-20 HBL2521 HBLSS45
480V AC
3ØY 347/ L23-20 HBL2531 HBLSS45
600V AC
30A, 4 Pole 5 Wire Grounding 3ØY 120/ L21-30 HBL2811 HBLSS45
208V AC
3ØY 277/ L22-30 HBL2821 HBLSS45
480V AC
3ØY 347/ L23-30 HBL2831 HBLSS45
600V AC
