Twist-Lock(R) Devices Twist-Lock(R) Devices Safety-Shroud(R) Twist-Lock(R) Devices ADD-A-SHROUDTM: The Innovation That Lets You Convert Existing Insulgrip(R) Twist-Lock(R) 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(R) Twist-Lock devices to a Safety-Shroud TwistLock plug. These devices provide a convenient and cost-effective way to convert existing Hubbell Insulgrip Twist-Lock plugs to Safety-Shroud TwistLock 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. 2.04" (51.8) 20A, 2 Pole 3 Wire Grounding 1.57" (39.9) HBLSS3 2.21" (56.1) 30A, 2 Pole 3 Wire Grounding Voltage Rating NEMA Number Hubbell Catalog Numbers Plug Add-A-Shroud 125V 250V 277V 480V 600V 125V 250V 277V 480V 600V L5-20 L6-20 L7-20 L8-20 L9-20 L5-30 L6-30 L7-30 L8-30 L9-30 HBL2311 HBL2321 HBL2331 HBL2341 HBL2351 HBL2611 HBL2621 HBL2631 HBL2641 HBL2651 AC AC AC AC AC AC HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 HBLSS3 Add-A-Shroud Catalog Number HBLSS45 For conversion of all 4 and 5 wire Hubbell Insulgrip Twist-Lock Devices. 1.65" (41.9) 20A, 3 Pole 4 Wire Grounding HBLSS45 30A, 3 Pole 4 Wire Grounding ADD-A-SHROUDTM Devices 20A, 4 Pole 5 Wire Grounding 30A, 4 Pole 5 Wire Grounding Voltage Rating 125/250V 3O250V AC 3O480V AC 125/250V 3O250V AC 3O480V AC 3O600V AC 3OY 120/ 208V AC NEMA Number L14-20 L15-20 L16-20 L14-30 L15-30 L16-30 L17-30 L21-20 Hubbell Catalog Numbers Plug Add-A-Shroud HBL2411 HBLSS45 HBL2421 HBLSS45 HBL2431 HBLSS45 HBL2711 HBLSS45 HBL2721 HBLSS45 HBL2731 HBLSS45 HBL2741 HBLSS45 HBL2511 HBLSS45 3OY 277/ 480V AC 3OY 347/ 600V AC L22-20 HBL2521 HBLSS45 L23-20 HBL2531 HBLSS45 3OY 120/ 208V AC 3OY 277/ 480V AC L21-30 HBL2811 HBLSS45 L22-30 HBL2821 HBLSS45 L23-30 HBL2831 HBLSS45 3OY 347/ 600V AC B-40 www.hubbell-wiring.com Dimensions in Inches (mm)