B-39Dimensions in Inches (mm) www.hubbell-wiring.com
Twist-Lock® Devices
Mechanical Interlock Switched Safety Enclosures
Circuit-Lock® Unfused Safety Shroud® Twist-Lock®
UL Listed, CSA Certified TYPE 4,
4X and TYPE 12K Enclosure Rating
Ordering Information
This unit is a complete enclosure ready to accept any 20 or 30A Watertight Safety-
Shroud Twist-Lock Receptacle.
Description Ratings Catalog Number
Mechanical Interlock Amperage and voltage ratings will HBLMITL
accommodates 20A or 30A be determined by the choice of the
Watertight Safety-Shroud Watertight Safety-Shroud Twist-Lock
Twist-Lock receptacles. selected. Suppiled with ¾" Hub.
Accepts the following watertight Safety-Shroud Twist-Lock receptacles:
20A
Use Watertight
NEMA Config.
Max. Safety Shroud
Voltage Reference HP Receptacle Twist-Lock Plug
Rating AC Number Rating* Catalog Numbers
2 Pole, 3 Wire 120 L5-20 1 HBL2310SW HBL2311SW
208-240 L6-20 2.5 HBL2320SW HBL2321SW
277 L7-20 3 HBL2330SW HBL2331SW
3 Pole, 4 Wire 120/240 L14-20 2.5 HBL2410SW HBL2411SW
240 3Ø L15-20 5 (3@208V) HBL2420SW HBL2421SW
480 3Ø L16-20 10 HBL2430SW HBL2431SW
4 Pole, 5 Wire 120/208 3ØY L21-20 3 HBL2510SW HBL2511SW
30A
Use Watertight
NEMA Config.
Max. Safety Shroud
Voltage Reference HP Receptacle Twist-Lock Plug
Rating AC Number Rating* Catalog Numbers
2 Pole, 3 Wire 120 L5-30 1 HBL2610SW HBL2611SW
208-240 L6-30 3 HBL2620SW HBL2621SW
3 Pole, 4 Wire 120/240 L14-30 3 HBL2710SW HBL2711SW
240 3Ø L15-30 7.5 HBL2720SW HBL2721SW
480 3Ø L16-30 15 HBL2730SW HBL2731SW
600 3Ø L17-30 15 HBL2740SW HBL2741SW
4 Pole, 5 Wire 120/208 3ØY L21-30 7.5 HBL2810SW HBL2811SW
Auxiliary Contacts
Description Ratings Catalog Number
Auxiliary contact. “Break After Main Break”, 1 set of HBLAC1
n/o contacts, 1 set of n/c contacts.
Auxiliary contact. “Break Before Main Break”, 1 set of HBLAC2
n/o contacts.
Replacement Parts
Description Catalog Number
Ground block. HBL30RGB
Neutral block. HBL30RNB
Replacement switch. HBLDS3RS
Notes: *HP ratings for the final unit are determined by the HP rating of the switch, limited by the
full load current capability of the receptacle at 80% of rated current, number of phases
and line voltage. HP ratings listed above are AC only.
See pages B-52 and B-53 for accessories.
For technical information see page B-73.
IP66
SUITABILITY
Twist-Lock® Devices Mechanical Interlock Switched Safety Enclosures
4.19"
(106.4)
4.88"
(124.0)
11.44"
(290.6)
3.19"
(81.0)
HBLMITL
